阅读理解(人生百味)单元练习题(含答案)(word)
阅读理解（人生百味）单元练习题(含答案)（word）
一、九年级中考英语阅读理解（人生百味）（含答案详细解析）
1．阅读下列材料，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将选项涂黑。
D
In today's world many people seem to be hungry for money. Some of them even lose their lives for it. Money does have its most useful effect（影响） on the poor, but once a person has a rich life, a lot more money doesn't mean more happiness.
If money was everything, all millionaires would have true love, true friendship, good health and a long life. However, this is not always true.
Nothing else is more pleasant than the three words which are "I love you". But can love be bought? I'm afraid not. Love means to give, not to take. To every person, health and long life are probably the most precious（宝贵的） things. Well, can health and a long life be bought with money? The answer is "No".
Of all the longest living people in the world, few of them are millionaires. True friendship can't be bought either. In a word, where money is worshiped（崇拜）, money can cause brothers to quarrel, lovers to hate, strangers to fight and so on. No matter how much money you have, it is still not enough to make you a happy person if you have no one to laugh with, no one to cry for. （1）According to the passage, which of the following do you think is right?
A. Money is everything.
B. Money isn't necessary.
C. Money is important, but not the most important.
D. With no money, with no success.
（2）What's the most important thing for every person according to the writer?
A. Only money.
B. Health and a long life.
C. Only friendship.
D. A, B and C （3）Which sentence of the following is TRUE according to the passage?
A. If you haven't much money, you can't get more happiness.
B. You may live a long life even if you are poor.
C. Every year many people die in the world because their family is poor.
D. If you are rich, you will have less friendship.
（4）In fact, many millionaires _________.
A. have true friendship
B. die earlier
C. have good health
D. have true love （5）What does the sentence "Love means to give, not to take." mean?
A. 爱意味着给你，而不能带走。
B. 爱是可以得到的，不要走开。
C. 爱意味着奉献，而不是索取。
D. 爱是可以索取的，而不必付出
【答案】（1）C
（2）B
（3）B
（4）B
（5）C
【解析】【分析】本文是一篇议论文，讲述了金钱到底对于我们来说意义是什么，寿命了捡钱纵然很重要但不是最重要的，我们最重要得是健康长寿，快乐和心中的唉=爱，最后
提出爱是奉献是的快乐，而不是易位的收获所取。提醒人们正确的开袋金钱，
（1）根据“Money does have its most useful effect（影响） on the poor, but once a person has a rich life, 可知钱很有用但是钱不是最重要的。故选C
（2）根据“ If money was everything, all millionaires would have true love, true friendship, good health and a long life. ”可知健康和长寿才是最重要的。故选B
（3）根据“Well, can health and a long life be bought with m oney? The answer is "No".可知及时好穷也可以获得很长时间。故选B
（4）根据“Of all the longest living people in the world, few of them are millionaires. ”实施上很多百万富翁死的更早。故选B
（5）根据“True friendship can't be bought either. In a word, where money is worshiped（崇拜）, money can cause broth ers to quarrel, lovers to hate, strangers to fight and so on.”可知爱是奉献而不是所取故选C
【点评】议论文重点在于读懂文章说明的中心思想，明确作者的主张观点，
2．阅读理解
It was a full moon night. A thief was getting ready to steal something from a villager's house. He got to the house, and then went inside quietly. By the moonlight outside, he entered a dark room.He could not even see his own hands or feet. But on the wall near the roof, there was a ventilator（通风设备）.The moon created a circle of light on it. The thief brought a cloth with him in order to get together all the things he hoped to steal. He spread it out on the floor and went inside the storeroom, where all the things were kept.
He didn't know that the owner of the house was awake and watching. As soon as the thief went inside the storeroom, he got up quickly from his bed, and picked up the cloth which the thief had spread out. He came back to his bed, which was in one dark corner of the room, and waited for the thief to come out.
At the same time, the thief went on collecting the things he wanted and threw them on the floor where he knew he had spread out the cloth. Soon there was a little mountain in the center of the room. Then the thief looked around for the end of the cloth to tie up the stolen things. At that time, the house owner let out a big groan--a deep groan. The thief was so scared that he hurried to run away. The thief not only failed to steal. But also lost his cloth.
（1）From the passage we can learn that the thief was to steal something from a villager's house .
A. in the afternoon
B. in the morning
C. at night
D. at noon
（2）The underlined word “groan” means “”.
A. .呼吸
B. 呻吟般的声音
C. 休息
D. 铃声（3）What of the following statements is not true according to the passage?
A. The thief spread the cloth out on the floor and went inside.
B. The thief was so scared after the house owner let out a big groan.
C. The owner of the house asleep .
D. The thief not only failed to steal, but also lost his cloth.
【答案】（1）C
（2）B
（3）C
【解析】【分析】文章讲述了一个小偷半夜溜进一家房子，准备偷东西后来主人醒了，小偷被吓跑，什么也没偷到的故事。
（1）细节推理题。根据“ It was a full moon night. A thief was getting ready to steal something from a villager's house. ”可知小偷是晚上才进去偷东西的，故选c
（2）细节推理题。根据“At that time, the house owner let out a big groan--a deep groan. The thief was so scared that he hurried to run away. ”可知小偷是听得到了一声呻吟，才吓跑了，故选b
（3）细节推理推题。通读全文可知，主任没有睡着，后来发现了小偷，才吓跑小偷。故选c
【点评】这种故事阅读类的文章，重点在于读懂故事讲得大概内容，找到题干和选项对应的重点句子，比较分析，逐一排除
3．阅读理解
It was the Peter shopkeeper in New York who taught me about the great power of kindness.
At that time I was a poor student. I would work early mornings and the late nights to pay for my studies.
On the day I went to that shop for the first time. I was sick with a very high fever. I had been off work for a few days, and I had run out of food. As I had been so busy working, I hardly had friends nearby who could help.
So I went out to get some food. Usually, I would have gone to the supermarket, but because it was closer, I went into the Peter Shop. I picked up a few items, and then handed them to the shopkeeper, who told me, “Girl, you are unwell.” I nodded.
He pointed at the sausage （香肠）and bread I was buying and offered, “l can make you a sandwich, so you don't have to do it yourself.” So, he made the sandwich and asked me to wait a moment. He went in the back room and reappeared with a bowl of hot soup. “I t will warm you up,” he said with a gentle smile.
What really warmed me up, though, was not the soup. It was his smile. His kindness made me feel cared for at a point in life when I was particularly lonely. It made me want to be as kind as the shopkeeper who had been kind to me. I had been quite shy, but from that day on, I did not let shyness stop me from performing kindness.
（1）Why did the writer work so hard?
A. Because she had to pay for her studies.
B. Because she wanted to stay in New York.
C. Because her friend needed help.
D. Because she wanted to get more experience.
（2）What was wrong with the writer on taht day?
A. She lost her job.
B. She had a terrible cold.
C. She had a high fever.
D. She lost her money.
（3）What did the shopkeeper do for the writer?
A. Gave some bread to her.
B. Made a sandwich for her.
C. Gave some medicine to her.
D. Gave a bowl of cold soup to her.
（4）What can we know from the last paragraph?
A. The writer would go to the shop often later.
B. The shopkeeper and the writer became good friends.
C. The writer was moved and wanted to be kind to others.
D. The shopkeeper cured （治愈） the writer's illness.
【答案】（1）A
（2）C
（3）B
（4）C
【解析】【分析】短文记叙了作者有一次生病去店里买东西，遇到店员主动给她做三明治的经历，从那以后，作者想要做一个像店员那么善良的人。
（1）细节理解题。从. I would work early mornings and the late nights to pay for my studies.可知作者这么努力工作是想付学费，故选A。
（2）细节理解题。从On the day I went to that shop for the first time. I was sick with a very high fever.可知那天作者发高烧，故选C。
（3）细节理解题。从“l can make you a sandwich, so you don't have to do it yourself.” So, he made the sandwich and asked me to wait a moment.可知这个店员给她做了个三明治，故选B。
（4）段意理解题。最后一段是作者的感触，她被店员的微笑感动了，想做一个和他一样友善的人，故选C。
【点评】考查对篇章的把握对细节的识别能力，答题时注意紧扣问题中的关键词，在文章中寻找答案。
4．阅读下列短文，从下面每题的A、B、C、D四个选项中选出最佳答案。
During the summer holidays, two classmates, Tom and Peter, were travelling in the desert. As they were walking, they had an argument. Tom was so angry that he beat Peter hard across-the face.
Peter felt hurt, but without s aying anything, he wrote down in the sand these words, “Today my best friend Tom beat me in the face.”
It was very hot, but they kept on walking and walking until they found a river, where they decided to take a bath. Suddenly Peter got stuck in the mire （泥潭） and started getting down. Seeing that, Tom rushed over and saved him. After Peter got recovered from the danger, he wrote with a knife on a stone, “Today my best friend Tom saved my life.”
Feeling surprised, Tom, who had slapped （掌掴） and saved his best friend, asked Peter, “After I beat you, you wrote something in the sand but just now you put down what I had done on a stone. Why?”
Peter replied, "When someone hurts us, we should take it down in the sand where winds of forgiveness can blow it away. But when someone does some-thing good for us, we must carve （雕刻）it on a stone where no wind can ever do that.”
Hearing that, Tom was deeply moved. He understood what Peter had said and done.
（1）What happened when Tom and Peter were travelling in the desert?
A. Peter hit Tom in the face.
B. They had an argument.
C. They didn't believe each other.
D. Peter got lost while walking.
（2）Where did Peter write the thank-you words after he was saved?
A. In the sand.
B. In the mire.
C. On his face.
D. On a stone.
（3）What can we learn from the story?
A. We can learn how to write down something.
B. We can learn how to fight back when being hurt.
C. We can learn how to thank or forgive others.
D. We can learn how to move somebody deeply.
（4）What is the best title of the passage?
A. Sand and stone
B. A dangerous travel
C. Someone hurts us
D. Someone is friendly to us
【答案】（1）B
（2）D
（3）C
（4）A
【解析】【分析】短文大意：Tom与Peter是同学，两人在沙漠中旅行时发生了争吵，Tom 生气地打了Peter，Peter很受伤的在沙子上写了：Tom打了我的脸。后面他们遇见了一条
河，Peter在河里洗澡时被泥潭陷住了，Tom救了他，这是Peter在石头上写了：Tom救了我。Tom很好奇的问为什么要在沙子上和石头上写这些话？Peter说：当有人伤害你时，要让原谅之风吹走它，但有人帮了你，就要永远怀着感恩之心。
（1）细节理解题。从During the summer holidays, two classmates, Tom and Peter, were travelling in the desert. As they were walking, they had an argument.可知他们有了争吵，故选B。
（2）细节理解题。从After Peter got recovered from the danger, he wrote with a knife on a stone, “Today my best friend Tom saved my life.”可知选D。
（3）主旨概括题。从"When someone hurts us, we should take it down in the sand where winds of forgiveness can blow it away. But when someone does some-thing good for us, we must carve （雕刻）it on a stone where no wind can ever do that.”可知从故事中我们学到的是感谢与原谅，故选C。
（4）主旨概括题。A.石头与沙子； B.一次危险的旅行； C.有人伤害了我们； D.有人对我们好。通读全文后可知选A最合适。
【点评】考查对篇章的把握对细节的识别能力，答题时注意紧扣问题中的关键词，在文章中寻找答案。
5．阅读理解
Saying no starts small
"All right then — just one more piece..." Words every girl has said when they are faced with the delicious cheesecake. Of course, many of us know we may eat the whole thing in the end.
It isn't just girls. Most of us find it hard to say "no" to something attractive. However, scientists now say that willpower is very important to success and a happy life.
Scientists in different countries have been studying the effects of willpower on people's lives for a long time. The results are similar, according to an article on February 7 in the Guardian, a famous British newspaper.
In one experiment, scientists told young children that they could either have a marshmallow （圆形软糖）now, or two marshmallows in 15 minutes. Waiting obviously needed more willpower. Scientists then continued studying the children as they grew up. They wanted to see if some children always had stronger willpower. They also wanted to see how having stronger willpower affected their lives.
Years later, scientists found that the children who had waited for two marshmallows were all healthier, happier and richer adults. Oppositely, the children who had shown weaker willpower at that young age were more likely to be in low-paid jobs, to be overweight, to have social problems. But there is hope, Roy F Baumeister, an American social psychology（心理学） professor （教授） told the Guardian. Baumeister says we can train our willpower just like we train our muscles （肌肉）. Even a little practice can strengthen（加强）our overall self-control if we do it regularly.
You could start by making yourself stand up straight, speaking in complete sentences, or using
a computer mouse with the other hand. Scientists have found that people who manage to change little habits often perform much better in laboratory willpower tests.
Like muscles, willpower can "get tired". Don't try to do too many things at the same time, or when you don't have enough energy, for example when you are ill. If you already feel tired, you can try to recharge（恢复） your willpower with a good night's sleep and by eating well.
（1）The example of a girl eating cheesecake is used to
A. prove that girls have weak willpower
B. introduce the topic of willpower to the readers
C. show that cheesecake is especially attractive to girls
D. show the connection between willpower and success
（2）What can we infer from the experiment?
A. The scientists had already known the results before the experiment.
B. It showed that willpower is the most important to success and a happy life.
C. The children who chose to wait were more likely to be successful in their lives.
D. The children who chose only one marshmallow at first had stronger willpower.
（3）Which of the following is NOT mentioned about the training of willpower?
A. You should have a goal every day.
B. Good rest and proper diet can help.
C. Willpower needs to be exercised regularly.
D. Keep willpower from being used too much.（4）What is the article mainly about?
A. How willpower and muscles are similar and how they can be trained.
B. How willpower affects people's lives and how it is similar to muscles.
C. How willpower is important to success and how we can make it stronger.
D. How willpower is connected with success and how they affect each other
【答案】（1）B
（2）C
（3）A
（4）C
【解析】【分析】主要讲了毅力的重要性和怎样让毅力变得更强。
（1）细节题。根据It isn't just girls. Most of us find it hard to say "no" to something attractive. However, scientists now say that willpower is very important to success and a happy life.可知通过讲小女孩吃奶酪蛋糕的例子来引出毅力话题，故选B。
（2）推测题。根据Years later, scientists found that the children who had waited for two marshmallows were all healthier, happier and richer adults.可知毅力强大的孩子成功的可能性更大，故选C。
（3）细节题。根据Baumeister says we can train our willpower just like we train our muscles （肌肉）. Even a little practice can strengthen（加强）our overall self-control if we do it
regularly.可知要规律锻炼；Like muscles, willpower can "get tired". Don't try to do too many things at the same time, or when you don't have enough energy, for example when you are ill. If you already feel tired, you can try to recharge（恢复） your willpower with a good night's sleep and by eating well.可知要好好休息和吃好，不能过度使用，故选A。
（3）主旨题。根据全文可知讲的是毅力的重要性和怎样让毅力变得更强。故选C。
【点评】考查阅读理解。本文涉及细节题、推断题和主旨题三种常考题型，细节题要注意从文中寻找答案；推断题需要联系上下文，推断出需要的信息；主旨题需要通读全文，了解大意之后找出中心思想。
6．阅读理解
"Everything happens for the best," my mother said whenever things weren't going my way. "Don't worry, one day your luck will change." Mother was right, as I discovered after I had finished my college education. I had decided to try for a job in radio. One day, I wanted to host （主持）a sports program. I went to Chicago and knocked on the door of every station. But I got turned down every time.
In one station, a kind lady said my problem was that I hadn't got enough experience. "Get some work with a small station and work your way up," she said.
I went back home. I couldn't get a job there, either. Then my dad told me a businessman had opened a store and needed someone to help him. But again, I didn't get the job.
I felt really down. "Your luck will change," mom said to me. Dad lent me the car to help me to look for my job. I tried another radio station in Iowa. But the owner, a nice man, told me he had already had someone.
As I left his office, I asked, "How can someone be a sports announcer（播音员）if he can't get a job in a radio station?"
I was waiting for the lift when I heard the man call. "What did you mean? Do you know anything about football?" He put me in front of a microphone and asked me to try to imagine that I was giving my opinion on a football game, I succeeded.
On my way home, mom's words came back to me, "One day your luck will change, son.
And when it happens, it'll feel doubly（加倍的）good because of all the hard work you've had." At that moment I knew what just she meant.
（1）Why didn't the writer get the job in Chicago?
A. Because he was too young.
B. Because he didn't get college education.
C. Because he's got a good-looking person.
D. Because he hadn't got enough experience.
（2）Which of the following is true according to the article?
A. You just need to wait for some time, then luck will come.
B. Luck will come if you try your best to do everything.
C. It's important for you to wait for luck.
D. You should trust your mother.
（3）The underlined sentence "But I got turned down every time." means "______".
A. But I was refused every time
B. But I was successful every time
C. But I lost my way every time
D. But the door of every station was always closed
（4）What's the best title of this passage?
A. Mother's Words
B. Everything Happens for the Best
C. No One is Always Lucky
D. To Find a Job in Radio is Difficult
【答案】（1）D
（2）B
（3）A
（4）B
【解析】【分析】文章大意：文章通过母亲的话和作者的亲身经历得出一个结论，通过努力一切都会变好。
（1）细节理解题。根据原句In one station, a kind lady said my problem was that I hadn't got enough experience. 在一个电台，一位善良的女士说我的问题是wi没有足够的经验。故选D。
（2）细节理解题。根据"Everything happens for the best," my mother said whenever things weren't going my way. "Don't worry, one day your luck will change." Mother was right，可知妈妈的观点是一切都会好的，不用担心，有一天你的运气会改变。母亲的意思是通过努力好运一定回来，故选B。
（3）句义理解题。根据三四五自然段可知作者每次都被拒绝了，turn down: 拒绝，和refuse意思相近，故选A。
（4）主旨大意题。通读全文，可知文章围绕第一句话Everything happens for the best，展开，通过自己的真实经历得出结论And when it happens, it'll feel doubly（加倍的）good because of all the hard work you've had." 可知主旨大意是一切都会好的，故选B。
【点评】考查阅读理解能力。首先阅读全文，掌握大意，然后根据每个问题在文章中找到依据，锁定正确答案。
7．阅读理解
Sometimes I really doubt whether there is love between my parents. Every day they don't act in the romantic ways that I read in books or I see on TV. In their opinion, "I love you" is too luxurious for them to say. Sending flowers on Valentine's Day is even more out of the question.
One day, my mother was sewing a quilt（被子）."Mom, I have a question to ask you." "What?" she replied, still doing her work. "Is there love between you and Dad?"
My mother stopped her work and raised her head with surprise in her eyes. Then she said, "Susan, look at this thread. Sometimes it appears, but most of it disappears in the quilt. The thread really makes the quilt strong and durable. If life is a quilt, then love should be a thread. Love is inside."
I listened carefully but I couldn't understand until the next spring. At that time, my father suddenly got sick seriously. After they were back from the hospital, my mother helped him walk slowly on the beautiful country road every morning. My father had never been so gentle. But after two months he still couldn't walk by himself. All of us were worried about him." Dad, how are you feeling now?" I asked him one day. "Susan, don't worry about me," he said gently. "To tell you the truth, I just like walking with your mom. "Reading his eyes, I know he loves my mother
deeply.
Once I thought love meant flowers, gifts and sweet kisses. But from this experience, I understand that love is just a thread in the quilt of our life. Love is inside, making life strong and warm.
（1）Why does the writer NOT make sure whether there is love between her parents?
A. They don't act in the romantic ways.
B. They never say, "I love you".
C. They never send flowers to each other on Valentine's Day.
D. All of the above.
（2）When did the writer understand her mother's answer?
A. After her father got sick seriously.
B. Before her father got sick seriously.
C. After her mother gave her father some flowers.
D. After her father gave her mother some flowers.
（3）What does the underlined word "thread" mean in Chinese?
A. 针
B. 被子
C. 线
D. 爱
（4）Why couldn't her father walk by himself?
A. Because her father was seriously ill.
B. Because her father liked walking with his wife.
C. Because his father didn't get good treatment（治疗）.
D. Because his father had a bad temper（脾气）.
（5）What is the best title for the story?
A. Love Is Just a Thread
B. Love Is Just a quilt
C. Love Is to Say "I love you"
D. Love Is to Walk Together
【答案】（1）D
（2）A
（3）C
（4）B
（5）A
【解析】【分析】文章大意：这篇短文讲述的是作者怀疑自己的父母之间是否有爱存在，因为他们之间从来没有浪漫的举动，没有鲜花和礼物。但是他父亲生病之后，父母的表现让她知道了，爱是在内心里面的，就像做被子的线一样，让被子更结实更温暖。
（1）细节理解题。根据短文的开头Every day they don't act in the romantic ways that I read
in books or I see on TV. In their opinion, “I love you” is too luxurious for them to say. Sending flowers on Valentine’s Day is even more out of the question可知，作者怀疑他的父母之间是否有爱存在，原因是他们不像电视里看到的那样浪漫，也从来不说“我爱你”，在情人节的时候也不送花。故A、B、C三项都包括。故选D。
（2）细节理解题。根据短文中I listened carefully but I couldn't understand until the next spring. At that time, my father suddenly got sick seriously.可知，作者听了妈妈的回答，并不明白妈妈是什么意思，直到第二年春天，他的父亲突然生病，妈妈的行为才让他明白了妈妈的话是什么意思。故选A。
（3）词义猜测题。根据上下文的意思和划线单词所在的句子可知，作者去问他妈妈问题的时候，他妈妈在做被子。quilt 是被子，所以B不对；又根据文中thread让被子更结实，故我们猜测它的意思应该是线。故选C。
（4）细节理解题。根据短文中“Susan, don't worry about me,”he said gently. “To tell you the truth, I just like walking with your mom.”可知，当作者问她的爸爸感觉如何的时候，她爸爸告诉她，他并不是不能走路，只是他喜欢和作者的妈妈一起散步。故选B。
（5）主旨大意题。这篇短文讲述的是作者怀疑自己的父母之间是否有爱存在，因为他们之间从来没有浪漫的举动，没有鲜花和礼物。但是他父亲生病之后，父母的表现让她知道了，爱是在内心里面的，就像做被子的线一样，让被子更结实更温暖。故应该选A。
【点评】考查阅读理解。本文涉及细节题、推断题和主旨题三种常考题型，细节题要注意从文中寻找答案；推断题需要联系上下文，推断出需要的信息；主旨题需要通读全文，了解大意之后找出中心思想。
8．阅读理解
My 10-year-old Donna said,“Mom,I had a new f riend at school today.Can she come over tomorrow?”Donna was a shy girl and I wanted her to make some friends to bring her out of her shell.
“Sure,honey,that sounds great,”I said,thinking back to my own best friend,Lillian.We lived across the street from each other in Washington Heights,New York.We met at the age of 10,too.Like my daughter,I was shy,but Lillian drew me out.She was one of the friendliest people in school,with shiny black hair and a mile-wide smile.
In senior high school,Lillian went on a trip to Florida.This was the first time we had to be away from each other for a few days.“I'll be back soon,”she told me.But three days later,Lillian's sister told me that she had fallen into a river and hadn't come out any more.Soon,my family moved to New Jersey.Whenever I thought of her,tears came into my eyes.
The next day Donna brought her new friend home.“Hi,Mrs.Loggia,”the little girl said.Her hair was so shiny and black and she shot me a big smile.“My name is Laura.”
My daughter's new friend was so much like Lillian.I was still puzzled （迷惑） when Laura's mom came to pick her up later that afternoon.I opened the door to let her in.“Judy!” she cried.“It's me,Lillian's sister,from Washington Heights.”Yes,my daughter's friend looked familiar.She was Lillian's niece.
（1）The underlined words in the first paragraph “to bring her out of her shell”mean .
A. to help her become less shy
B. to help her become smart
C. to help her live happily
D. to help her walk out of her house
（2）Laura looked familiar to the writer because she .
A. was Lillian's niece
B. was as old as her daughter
C. was from Washington Heights
D. had shiny black hair and a big smile,too
（3）Why did the writer lose her best friend?Because .
A. she moved to New Jersey
B. they were different from each other
C. her best friend travelled to Florida
D. her best friend lost her life on a trip
（4）“I knew we would be best friends forever.”is a sentence from the passage and should be put at the end of .
A. Paragraph 2
B. Paragraph 3
C. Paragraph 4
D. Paragraph 5
（5）We can infer （推断） from the passage that .
A. the writer is outgoing now
B. Laura helps Donna a lot
C. Laura and Donna are of the same age
D. Judy moved to New Jersey because of Lillian's death
【答案】（1）A
（2）A
（3）D
（4）A
（5）A
【解析】【分析】大意：本文主要讲的是女儿Donna邀请朋友Laura来家里做客的事情让妈妈想起了自己小时候的朋友的故事。
（1）推断题。根据句子Donna was a shy girl可知，作者想让唐娜通过结交朋友而变得活泼开朗。故选A。
（2）细节题。根据Yes,my daughter's friend looked familiar.She was Lillian's niece.可知，劳拉看起来很眼熟是因为她是作者朋友的侄女。故选A。
（3）细节理解题。由句子Lillian's sister told me that she had fallen into a river and hadn't come out any more.可知，作者的好朋友在去旅游的时候，掉进河里失去了生命。故选D。（4）推理判断题。根据第二段内容可知，本段主要介绍了作者童年朋友Lillian，可知此处放I knew we would be best friends forever.我们会是永远的朋友结尾非常合适。故选A。（5）推断题。根据Like my daughter,I was shy,but Lillian drew me out.可知，作者过去很害羞，现在很外向。故选A。
【点评】考查阅读理解。本文涉及细节题、推断题两种常考题型，细节题要注意从文中寻找答案；推断题需要联系上下文，推断出需要的信息。
9．阅读理解
No matter who you are and where you live, the most important thing is what kind of person you are. There are many good qualities （品质） that can benefit you a lot in your life. Among them, the following qualities are the most helpful ones.
Have a positive attitude（态度）. Life is not always a bed of roses. When you face difficulties,
don't lose heart. Do you know what can help you overcome difficulties？ It's your attitude. Cheer up！ Life is like a mirror. When you smile in front of it, it will also smile at you.
Keep learning. Maybe you are used to your present life. Every day you have so much work to do that you can't find any time to learn. However, the world around you is changing all the time. Never be satisfied with yourself, or you will fall behind others. Keeping learning can help you get success in the future.
Be creative. In the modern world, the students who have creative thinking are needed most. Being creative means coming up with new ideas and having creative imagination. Those who are creative have more choices in their life.
Be honest and keep your promise. Honesty is the best policy（原则）. Nobody likes a person who tells lies. The one who keeps his words is popular everywhere.
As long as you have these qualities mentioned above, you will be excellent and make a difference to the world. Albert Einstein once said, "Try not to become a man of success but rather try to become a man of value."
（1）From the passage, we know that _____can help you overcome difficulties.
A. roses
B. attitude
C. mirrors
D. learning
（2）The underlined word "benefit" probably means ____in Chinese in this passage.
A. 影响
B. 补贴
C. 有益
D. 救济（3）In the writer's opinion, there are _____qualities that can benefit you most in your life.
A. three
B. four
C. five
D. six
（4）Which of the following is NOT true according to the passage？
A. Since there is too much work to do, you needn't find time to learn.
B. If you think creatively, you will have more chances to choose in your life.
C. When you keep your words, you usually promise to do what you have said.
D. Albert Einstein thought we should become a man of value.
（5）Which one might be the best title of this passage？
A. Keeping Your Promise
B. Being a Man of Success
C. Trying to Think Creatively
D. The Most Helpful Qualities of a Man
【答案】（1）B
（2）C
（3）B
（4）A
（5）D
【解析】【分析】文章大意：短文介绍了人应该具有的四种品质：积极的态度，持续学习，有创造力和诚实守信。
（1）细节理解题题，根据When you face difficulties, don't lose heart.Do you know what can help you overcome difficulties？ It's your attitude. Cheer up！可知态度会帮你克服困难，故答案是B。
（2）词义猜测题，根据There are many good qualities （品质） that can benefit you a lot in your life.可知是好的品质在生活中对你有益，所以单词的意思是“有益”，故答案是
C。
（3）数字计算题，根据短文内容可知作者介绍了积极的态度，持续学习，有创造力和诚实守信四种好的品质，故答案是B。
（4）正误判断题，根据Every day you have so much work to do that you can't find any time to learn. However, the world around you is changing all the time. Never be satisfied with yourself, or you will fall behind others. Keeping learning can help you get success in the future.可知，世界在变化，一定要找时间学习，因此工作多，不必找时间学习是错误的，故答案是A。
（5）标题判断题，根据文章内容可知，短文主要介绍了对人有帮助作用的四个品质，所以标题为“人的最有帮助作用的品质”，故答案是D。
【点评】考查阅读理解。本文涉及细节理解题、正误判断题、词义猜测题、数字计算题、标题判断题。细节理解题可以直接从文中寻找答案；正误判断题同属于细节理解题，需要根据文章内容做出正误判定；词义猜测题需要结合具体语境，推出未知单词的意思；数字计算题需要根据短文中提供的数字进行简单的数学计算，得出结论；标题判断题需要在充分理解文章的基础上归纳文章中心，凝练句式得出结论。
10．阅读理解
New York is 3 hours ahead of（在……前）California, but it does not make California slow.
Someone graduated at the age of 22, but waited 5 years before getting a good job！
Someone became a CEO at25, and died at 50.
While another became a CEO at 50,
And ▲ to 90 years,
Someone is still single, while someone else got married.
Absolutely everyone in this world works based on their Time Zone.
People around you might seem to go ahead of you, some might seem to be behind you.
But everyone is running their own RACE, in their own TIME.
Don't envy（羡慕）them or laugh at them.
They are in their TIME ZONE, and you are in yours!
Life is about waiting for the right moment to act.
So. RELAX
You're not LATE.
You're not Early.
You are very much ON TIME, and in your TIME ZONE.
（1）If someone is ahead of or behind you, you shouldn't them.
A. be worried about
B. feel happy for
C. get angry with
D. envy or laugh at （2）The best word for the blank in the poem is " ".
A. born
B. lived
C. grew
D. married
（3）What can we learn from the poem？
A. Don't hurry and take your own steps.
B. Life is all about waiting for time zones.
C. The earlier we succeed, the better we will be.
D. Sooner or later you are going to get a good job.
【答案】（1）D
（2）B
（3）A
【解析】【分析】本文是一首诗，讲述每个人在这个世界上都有自己的时区。
（1）推理题。根据But everyone is running their own RACE, in their own TIME.Don't envy（羡慕）them or laugh at them可知如果有人在你前面或后面，你不该嫉妒或嘲笑他们，故选D。
（2）推理题。根据Someone became a CEO at25, and died at 50.While another became a CEO at 50,And...to 90 years,可知此处应是活到90岁，故选B。
（3）推理题。根据They are in their TIME ZONE, and you are in yours! Life is about waiting for the right moment to act.So. RELAXE You're not LATE.You're not Early.You are very much ON TIME, and in your TIME ZONE.可知别着急，走自己的路，故选A。
【点评】考查阅读理解。本文涉及推断题，推断题需要联系上下文，推断出需要的信息。
word2020表格使用技巧
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卡，在“行高值是”框中，单击“最小值”，最后单击“确定”按钮。如果清除“指定高度”复选框，word会自动调整文本的高度。 让表格随窗口改变大小 如果已经将表格设为在窗口尺寸改变时自动调整尺寸，请确认在“We b版式视图”中查看文档。因为在“普通视图”、“页面视图”或“大纲视图”中，表格不能调整尺寸。 禁止跨页断行 大型表格必须在分页符处被分割。如果分页符拆分了表格中单独的一行，对于新的一页上位于该行以外的其他各行，word有时会在 状态栏中显示不正确的行号。如果需要准确的行号，可禁止表格跨 页断行，单击表格，选择“表格”→“表格属性”，选择“行”选 项卡，清除“允许跨页断行”复选框，最后单击“确定”按钮。 避免表格在页面末尾被切断 如果word表格长度超过了一页，但在页面末尾被切断，那表格 极有可能具有“文字环绕”格式。请选中表格，选择“表 格”→“表格属性”，然后单击“表格”标签，在“文字环绕”标 题下，单击“无”，最后单击“确定”按钮。 左右移动表格 如果移动表格时，可以上下移动，但无法左右移动，那可能是在“Web版式视图”中查看文档，并且对表格应用了“文字环绕”格式。如果不是处理Web页，请切换到“普通视图”或“页面视图”。如果是处理Web页，并且要移动表格，则必须先取消“文字环绕” 格式。 避免表格所有格式都发生改变 如果修改现有的表格样式，文档中基于该样式的所有表格将发生改变。为避免更改文档中的其他表格，可新建一个样式，而不是改 变现有的样式。若要新建样式，请选择“格式”→“样式和格式”，打开“样式和格式”任务窗格，然后单击“新样式”。
八年级数学《实数》单元测试题及答案
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word表格合并单元格或者插入单元格后为什么没了边框
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(完整版)八年级实数单元测试题(含答案)
八年级 实数 单元测试题 一、精心选一选（本大题共10小题，每小题3分，共30分。每小题给出四个选项，其中只有一个是正确的） 1在实数 Λ5757757775.07 22、（相邻两个5之间7的个数逐次加1） 、、、、02753 - 32)2 (0-、、ππ 中，无理数的个数是（ ） A 3个 B 4个 C 5个 D 6个 2下列说法正确的个数是（ ） ①两个无理数的差一定是无理数 ②两个无理数的商一定是无理数 ③两个无理数的积可能是有理数 ④有理数和无理数的和一定是无理数 ⑤有理数和无理数的积一定是无理数 A 1个 B 2个 C 3个 D 4个 3设面积为11的正方形的边长为x ，则x 的取值范围是（ ） A 32<
实数单元测试题(含答案)
实数单元测试题 一、选择题(每题3分，共24分） １.(易错易混点）4的算术平方根是( ） Ａ．2± ? B.2 ? C ．2± Ｄ.2 2 、下列实数中,无理数是 ( ) A.4 Ｂ． 2π ? Ｃ.13?? D ．1 2 3.（易错易混点)下列运算正确的是（ ) A 、39±= B 、33-=- C 、39-=- D 、932=- 4、327-的绝对值是( ） A ．3?? B.3-? C. 13?? D ．1 3- 5、若使式子 2x -在实数范围内有意义．．． ，则x 的取值范围是 A ． 2x ≥ B. 2x > C ．2x < D ．2x ≤ 6、若x y ，为实数，且220x y ++-=,则2011 x y ?? ? ?? 的值为( ) A ．１ ? B.1-? C ．2?? D ．2- 7、有一个数值转换器，原理如图，当输入的ｘ为64时，输出的y 是（ ） A 、8 B 、22 C 、32 Ｄ、23 8．设0 2a =,2 (3)b =-,3 9c =-11 ()2 d -=，则a b c d ，，，按由小到大的顺序排列正确 的是( ) ?Ａ．c a d b <<< ????? ? Ｂ．b d a c <<< ?C.a c d b <<< ? D.b c a d <<< 二、填空题（每题3分，共24分) 9、9的平方根是 .
1０、在３，０，2-,2四个数中，最小的数是 １1、(易错易混点）若2(3)3a a -=-,则a 与3的大小关系是 12、请写出一个比5小的整数 . １３、计算：=---0 123）（ 。 14、如图２，数轴上表示数3的点是 . １5、化简:32583-的结果为 。 １6、对于任意不相等的两个数a ，b ，定义一种运算※如下:ａ※b = b a b a -+，如3※２= 52 32 3=-+.那么12※4= . 三、计算(17－20题每题4分，21题12分) １7（1）计算:0 133163?? ??? ． (2）计算:1 021|2|(π2)9(1)3-?? -+?- ??? 1８、将下列各数填入相应的集合内。
新人教版七年级下实数单元测试题
新人教版七年级（下）数学《实数》单元测试题 班级 姓名 一、选择题 1． 有下列说法 （1）无理数就是开方开不尽的数；（2）无理数是无限不循环小数； （3）无理数包括正无理数、零、负无理数； （4）无理数都可以用数轴上的点来表示。 其中正确的说法的个数是（ ） A ．1 B ．2 C ．3 D ．4 2．()2 0.7-的平方根是（ ） A ．0.7- B ．0.7± C ．0.7 D ．0.49 3.能与数轴上的点一一对应的是（ ） A 整数 B 有理数 C 无理数 D 实数 4. 91 的平方根是（ ） A. 31 B. 31- C. 31± D. 811 ± 5.如果一个实数的平方根与它的立方根相等，则这个数是（ ） A. 0 B. 正整数 C. 0和1 D. 1 6.下列说法正确是（ ） A. 25的平方根是5 B. 一2 2 的算术平方根是2 C. 0.8的立方根是0.2 D. 65是 的一个平方根 7. 如果 25.0=y ，那么y 的值是（ ） A. 0.0625 B. —0.5 C. 0.5 D .±0.5 8 . 下列说法错误的是（ ） A . a 2 与（—a ）2 相等 B. a 2 与 ) (2 a -互为相反数 C. 3 a 与3a - 是互为相反数 D. a 与 a - 互为相反数 9. 设面积为3的正方形的边长为x ，那么关于x 的说法正确的是（ ） A. x 是有理数 B. x = 3± C. x 不存在 D. x 是1和2之间的实数 10. 下列说法正确的是（ ） A. 0.25是0.5 的一个平方根 B .正数有两个平方根，且这两个平方根之和等于0 C . 7 2 的平方根是7 D. 负数有一个平方根 11、9的平方根是 （ ） A ．3 B.－3 C. 3 D. 81 12. 下列各数中，不是无理数的是 （ ） A 7 B 0.5 C 2π D 0.151151115…）个之间依次多两个115( 13. 下列说法正确的是（ ） A. 有理数只是有限小数 B. 无理数是无限小数 C. 无限小数是无理数 D. 3 π 是分数 14．()2 0.7-的平方根是（ ） A ．0.7- B ．0.7± C ．0.7 D ．0.49 15．若33 7 8 a = ，则a 的值是（ ） A ． 78 B ．78- C ．78± D ．343 512 - 16. 若a 和a -都有意义，则a 的值是（ ） A.0≥a B.0≤a C.0=a D.0≠a 17． 3 8-=（ ） 3625
第六章《实数》测试题及答案
第六章《实数》单元测试题 （时间：90分钟 满分：100分） 学校 班别 姓名 座号 成绩 一、选择题（每小题3分，共30分） 1.下列各式中无意义的是（ ） A. 6 1- B. 21-）（ C.12+a D.222-+-x x 2.在下列说法中：①10的平方根是±10；②-2是4的一个平方根；③ 94的平方根是32 ； ④0.01的算术平方根是0.1；⑤ 24a a ±=，其中正确的有（ ） A.1个 B.2个 C.3个 D.4个 2.下列说法中正确的是（ ） A.立方根是它本身的数只有1和0 B.算数平方根是它本身的数只有1和0 C.平方根是它本身的数只有1和0 D.绝对值是它本身的数只有1和0 4. 641的立方根是（ ） A.21± B.41± C.41 D.2 1 5.现有四个无理数5，6，7，8，其中在实数2+1 与 3+1 之间的有（ ） A.1个 B.2个 C.3个 D.4个 6.实数7- ，-2，-3的大小关系是（ ） A. 237---ππ B. 273---ππ C. 372---ππ D.723---ππ 7.已知351.1 =1.147，31.15 =2.472，3151.0 =0.532 5，则31510的值是（ ） A.24.72 B.53.25 C.11.47 D.114.7 8.若33 )2(,2,3--=--=-=c b a ，则 c b a ,,的大小关系是（ ） A.c b a φφ B.b a c φφ C.c a b φφ D.a b c φφ 9.已知x 是169的平方根，且2 32x y x =+，则y 的值是（ ）
word合并单元格的方法步骤详解.doc
word合并单元格的方法步骤详解 word合并单元格的方法一 1.打开Word2010文档页面，选择表格中需要合并的两个或两个以上的单元格。 word合并单元格的方法图1 2.右键单击被选中的单元格，选择合并单元格菜单命令即可。 word合并单元格的方法图2 word合并单元格的方法二 1.打开Word2010文档，选择表格中需要合并的两个或两个以上的单元格。 2.单击布局选项卡。 word合并单元格的方法图3 3.在合并组中单击合并单元格按钮即可。 word合并单元格的方法图4 word合并单元格的方法三 1.打开Word2010文档，在表格中单击任意单元格。单击设计选项卡。 word合并单元格的方法图5 2.在绘图边框组中单击擦除按钮，指针变成橡皮擦形状。 word合并单元格的方法图6
3.在表格线上拖动鼠标左键即可擦除线条，将两个单元格合并。 word合并单元格的方法图7 4.按ESC键或再次单击擦除按钮取消擦除状态。 Word和Excel中查找替换通配符使用方法 有哪些 输入? 国就可以找到诸如中国、美国、英国等字符; 输入???国可以找到孟加拉国等字符。 二、任意多个字符：* 可以代表任意多个字符。如： 输入*国就可以找到中国、美国、孟加拉国等字符。 三、指定字符之一：[] 框内的字符可以是指定要查找的字符之一，如： 输入[中美]国就可以找到中国、美国。又如： 输入th[iu]g ，就可查找到thigh 和thug 。 输入[学硕博]士，查找到的将会是学士、士、硕士、博士。 输入[大中小]学可以查找到大学、中学或小学，但不查找求学、开学等。 输入[高矮]个的话，Word查找工具就可以找到高个、矮个等内容。
实数单元测试题
实数单元测试卷 班级 姓名 成绩 一．选择题（每小题2分，共20分） 1. 计算4的结果是（ ）． Ａ.2 Ｂ．±2 Ｃ．-2 Ｄ．4． 2. 在-1.732，2，π， 3.41 ，2+3，3.212212221…，3.14这些数中，无理数的个数为( ). A.5 B.2 C.3 D.4 3. 有下列说法：其中正确的说法的个数是（ ） （1）无理数就是开方开不尽的数；（2）无理数是无限不循环小数； （3）无理数包括正无理数、零、负无理数； （4）无理数都可以用数轴上的点来表示。 A ．1 B ．2 C ．3 D ．4 4. 下列各式中，正确的是( ). A.3355 B.6.06.3 C.13)13(2 D.636 6. 下列说法中，正确的是（ ）． A. 不带根号的数不是无理数 B. 8的立方根是±2 C. 绝对值是3的实数是3 D. 每个实数都对应数轴上一个点 7. 若a a 2)3(-3，则a 的取值范围是( ). A. a ＞3 B. a ≥3 C. a ＜3 D. a ≤3 8. 若10 x ，则x x x x 、、、1 2中，最小的数是（ ）。 A 、x B 、x 1 C 、x D 、2 x 9.下列说法错误的是（ ） A ．3 是9的平方根 B ．5的平方等于5 C ．1 的平方根是1 D ．9的算术平方根是3 10.下列说法中正确的是（ ） A. 实数2a 是负数 B. a a 2 C. a 一定是正数 D. 实数a 的绝对值是a 二.填空题（每小题3分，共30分） 11．若x 的立方根是－41 ，则x ＝___________． 12．化简 =___________。
最新-实数单元测试题(含答案)
实数测试题 一、选择题（每题4分，共32分） 1．（易错易混点）4的算术平方根是（ ） A ．2± B ．2 C ． D 2、下列实数中,无理数是 （ ） B. 2 π C. 13 D. 12 3．（易错易混点）下列运算正确的是（ ） A 、39±= B 、 33-=- C 、39-=- D 、932=- 4 的绝对值是（ ） A ．3 B ．3- C ． 1 3 D ．13 - 5 ．．． ，则x 的取值范围是 A ． 2x ≥ B ． 2x > C ．2x < D ．2x ≤ 6、若x y ， 为实数，且20x +=，则2011 x y ? ? ?? ? 的值为（ ） A ．1 B ．1- C ．2 D ．2- 7、有一个数值转换器，原理如图，当输入的x 为64时，输出的y 是（ ） A 、8 B 、22 C 、32 D 、23 8．设0 2a =，2 (3)b =- ，c =11 ()2 d -=，则a b c d ，，，按由小到大的顺序排列 正确的是（ ） A ．c a d b <<< B ．b d a c <<< C ．a c d b <<< D ．b c a d <<< 二、填空题（每题4分，共32分） 9、9的平方根是 .
10、在3，0，2-，2四个数中，最小的数是 11、（易错易混点）3a =-，则a 与3的大小关系是 12小的整数 ． 13、计算：=---0123）（ 。 14、如图2的点是 . 15、化简：32583-的结果为 。 16、对于任意不相等的两个数a ，b ，定义一种运算※如下：a ※b = b a b a -+，如3※2= 52 32 3=-+．那么12※4= ． 三、计算题 17、（1）计算：0133??- ???．（2）计算：1 021|2|(π(1)3-?? -+?- ??? （每题8分） 18、将下列各数填入相应的集合内。（每空2分） －7， 0.32, 13 ，0，π，0.1010010001… ①有理数集合｛ … ｝ ②无理数集合｛ … ｝ ③负实数集合｛ … ｝ 19、求下列各式中的x 。（每题5分） （1）x 2 -4x+4= 16； （2）x 2 -12149 = 0。
word把表格两列合并成一列
竭诚为您提供优质文档/双击可除word把表格两列合并成一列 篇一：将word表格多行内容转成一列的技巧 将word表格多行内容转成一列的技巧 在日常办公应用中，我们经常会遇到将一个表格中各行内容连接起来作为一列形成新表的情况(如图1)，word中没有现成的功能，忽然想起excel中“选择性粘贴”中的“转置”功能，但实际操作一下才发现，它只能将表格的行、列位置互换一下，不能达到上述目的。笔者经过多次实践，终于找到一套可以让表格任意纵、横的方法。 方法主要是借助word中“文字与表格相互转换”功能 与“高级替换”功能的配合使用，具体步骤如下： 1.将表格转换成文字 选定整个表格后，执行“表格→转换→表格转换成文字”，在弹出的“将表格转换成文字”对话框中选择默认的文字分隔符“制表符”，然后单击[确定]按钮。此时原表格中的表 格线全部消失，各列内容以空格分隔。 图1 2.将各行内容连接起来，以列的形式出现
(1)选中文字中两列间的空格部分(如图2)，并从“编辑”菜单中执行“复制”命令，将列间空格存放在剪贴板中，待稍后替换时使用。 图2 (2)选中刚刚转换好的文字内容部分，执行“编辑→替换”，在弹出的“查找和替换”对话框中的“查找内容”文本框后单击鼠标，定位好插入点，将步骤1中复制的空格从剪贴板上粘贴出来。 注意：由于此对话框中不支持鼠标右击，也不支持菜单中的“粘贴”操作，所以此处只能使用“粘贴”命令的快捷键：“ctrl＋V”。 (3)用鼠标将插入点定位在对话框中“替换为”文本框的后边，点击对话框左下角的[高级]按钮，将对话框下部折叠部分展开，单击[特殊字符]按钮，在弹出的列表中选择最上方的“段落标记”，此时“替换为”文本框中的内容显示为“^p”(如图3)。 (4)单击对话框中部的[全部替换]按钮，在出现的“word 已完成对所选内容的搜索，共替换xx处。是否搜索文档其余部分？”提示信息中点击[否]结束替换操作。 3.去除出现的空白行 再次执行“编辑→替换”，用上述方法，将两个“段落标记”全部替换为一个“段落标记”(即在“查找内容”后
-实数单元测试题(含答案)
实数测试题 一、选择题(每题４分，共32分) 1．(易错易混点）4的算术平方根是（ ) A ．2±? B.2 Ｃ.2± ? Ｄ．2 ２、下列实数中 ,无理数是 （ ） A ．4 ? B.2 π ? C.13 ?? D ．12 ３．(易错易混点）下列运算正确的是（ ) Ａ、39±= B 、 33-=- C 、39-=- Ｄ、932=- ４、327-的绝对值是（ ） A ．3? B.3-?? C ． 13? D.13 - ５、若使式子2x -在实数范围内有意义．．． ,则x 的取值范围是 A. 2x ≥ B. 2x > C ．2x < D ．2x ≤ 6、若x y ，为实数,且220x y ++-=,则2011x y ?? ???的值为( ) A.1?? B ．1-?? C.2?? D ．2- ７、有一个数值转换器，原理如图，当输入的x 为６4时,输出的y 是( ) Ａ、8 B 、22 Ｃ、32 D 、23 8.设02a =，2(3)b =-，39c = -11()2 d -=，则a b c d ，，，按由小到大的顺序排列正确的是（ ） Ａ．c a d b <<< ??? ? Ｂ.b d a c <<< Ｃ．a c d b <<< ??? D.b c a d <<< 二、填空题(每题4分，共３2分） 9、9的平方根是 ．
10、在3，0，2-,2四个数中,最小的数是 １1、（易错易混点)若2(3)3a a -=-,则a 与3的大小关系是 １２、请写出一个比5小的整数 ． 13、计算：=---0123）（ 。 14、如图２，数轴上表示数3的点是 . 15、化简:32583-的结果为 。 16、对于任意不相等的两个数ａ,b ，定义一种运算※如下：a ※ｂ＝b a b a -+,如3※2=52 323=-+．那么12※４= . 三、计算题 17、（1)计算：0133163??- ???．(２)计算:1021|2|(π2)9(1)3-??-+?- ??? （每题8分) １8、将下列各数填入相应的集合内。(每空2分） -7， 0．32, 13,08123125π,0.10１0010001… ①有理数集合 { … ｝ ②无理数集合{ … } ③负实数集合｛ … ｝ 1９、求下列各式中的ｘ。（每题5分) （１)ｘ2 -4x ＋4= 16； (2)ｘ２ -12149 = 0。
《实数》单元测试及答案
西 关 中 学 八 年 级 上 册 数 学 第二章 实数 单元测试卷（一卷） 一、选择题（每小题3分，共30分）下列每小题都给出了四个答案，其中只有 一个答案是正确的，请把正确答案的代号填在该小题后的括号内。 1、若x 2=a ，则下列说法错误的是（ ） （A ）x 是a 的算术平方根 （B ）a 是x 的平方 （C ）x 是a 的平方根 （D ）x 的平方是a 2、下列各数中的无理数是（ ） （A ）16 （B ）3.14 （C ）113 （D ）0.1010010001…（两个1之间的零的个数依次多1个） 3、下列说法正确的是（ ） （A ）任何一个实数都可以用分数表示 （B ）无理数化为小数形式后一定是无限小数 （C ）无理数与无理数的和是无理数 （D ）有理数与无理数的积是无理数 4、9=（ ） （A ）±3 （B ）3 （C ）±81 （D ）81 5、如果x 是0.01的算术平方根，则x=( ) （A ）0.0001 （B ）±0.0001 （C ）0.1 （D ）±0.1 6、面积为8的正方形的对角线的长是（ ） （A ）2 （B ）2 （C ）22 （D ）4 7、下列各式错误的是（ ） （A ）2)5(5= （B ）2)5(5-= （C ）2)5(5-=（D ）2)5(5-= 8、4的算术平方根是（ ） （A ）2 （B ）2 （C ）4 （D ）16 9、下列推理不正确的是（ ） （A ）a=b b a = （B ）a=b 33b a = （C ）b a = a=b （D ）33b a = a=b 10、如图（一），在方格纸中， 假设每个小正方形的面积为2， 则图中的四条线段中长度是 有理数的有（ ）条。
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