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模拟卷1及其答案

模拟卷1及其答案
模拟卷1及其答案

高三期中模拟测试卷1

第二部分英语知识运用(共两节,满分35分)

第一节单项填空(共15小题;每小题1分,满分15分)

从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

21. Frank studied _____English language in London for four years, so he gets ____ good knowledge of London.

A. a; the

B. / ; /

C. / ; a

D. the; a

22. Zunhua is one of the famous tourism destinations, _____ lies Dongling, a group of the Qing Imperial Tombs.

A. 20 miles northwest of it

B. 20 miles northwest of which

C. northwest 20 miles to it

D. northwest 20 miles of which

23. Through the reform, the economic situation of China ______ much better than it used to be.

A. turned into

B. turned off

C. turned to

D. turned out

24. She had experienced many hardships _______their journeys, but she was amazed at the sight of the beautiful

scene.

A. in view of

B. in terms of

C. in the case of

D. in the course of

25. ---I wonder why he ______ so strangely these days.

---Recent pressure at study may account for his behavior.

A. was acting

B. acted

C. is acting

D. acts

26. It is global warming, rather than other factors, ___the extreme weather.

A that have led to

B which has caused

C which are causing D. that has led to

27. By improving reading skills, you can read faster and understand more of ________you once thought

impossible to understand.

A. that

B. what

C. which

D. whether

28. ---I’m going to Beijing next week. Do you have anything ______to your son?

---No,thanks.

A. taken

B. to take

C. to be taken

D. take

29. James Cook was a strict captain, but ______all the sailors on the ship showed respect for.

A. that

B. the one

C. who

D. one

30. Research findings show we spend about two hours dreaming every night, no matter what we during the

day.

A. may have done

B. could do

C. must have done

D. would do

31. ____ the crisis of economy getting more and more serious, the government is searching for ways to improve people’s life.

A. As

B. With

C. When

D. If

32. Not only did the Great Wall of China serve as a defense in the north but also______ the power of the emperor.

A. symbolize

B. to symbolize

C. symbolizing

D. symbolized

33.---How do you find Johnson’s last party?

---Well, it couldn’t have been . In fact, I won’t go to his party next time.

A. any better

B. any worse

C. so bad

D. the best

34. He doesn't spend any more money on clothing than I do, but ______ he manages to look so stylish.

A. therefore

B. somehow

C. furthermore

D. otherwise

35. --- I’ll have an interview for a position in that company, and now __________.

---Take it easy. Y ou are well prepared for it, aren’t you?

A. No pains, no gains

B. There is no smoke without fire

C. The world is my oyster

D. I have butterflies in my stomach

第二节完形填空(共20小题;每小题1分,满分20分)

请认真阅读下面各题,从题中所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。

When I started riding a bike a couple of years ago, I didn't think my involvement would ever be more serious than the occasional short ride. But as I built strength, my friends 36 me to step up my training and try some longer trips. The first one to come along was a 150-mile trip, the MS-150, an annual 37 that raises money to fight Aids.

When I registered, the idea seemed fantastic---support a worthy cause while going for the distance---and I trained with 38 . However, as the time for the ride approached, my self-doubts 39 beyond my endurance(忍耐). I 40 wanted to raise money for the charity, but I didn't really want to bike all those miles for two days straight.

The ride began on a beautiful Sunday morning in the Georgia countryside, and for the first few hours I felt 41 .This was just the experience I had 42 , and my spirits were high. 43 by the end of the day, I felt tired out.

If the body is 44 to the mind, here was evidence. Every 45 my brain pushed out seemed to travel right down to my legs. "I can't handle this" became a leg cramp (抽筋) , and "everyone else is a better rider" translated into 46 of breath. I was sure I'd have to 47 .

As I topped the crest (顶)of a hill, the beautiful sunset kept me going for a few minutes more. Then in the distance, I saw a lone woman riding very slowly 48 the bright red sun. I 49 that the person looked different in some way, but I couldn't tell why. So I pushed myself to 50 . There she was, riding along slowly but 51 , with a slight and determined smile on her face and she had only one leg.

My focus changed in that instant. For a whole day I'd been 52 my body. But now I knew it wasn't the body, but the 53 that would help me reach my goal.

It rained all the second day. I never saw the one-legged biker again, but I pushed on without 54 , knowing she was out there with me somewhere. And at the end of the day, still feeling 55 , I completed the 150-mile trip.

36. A. encouraged B. forbade C. forced D. warned

37. A. accident B. event C. incident D. affair

38. A. care B. ease C. enthusiasm D. difficulty

39. A. achieved B. gained C. progressed D. advanced

40. A. still B. even C. rather D. then

41. A. nervous B. disappointed C. wonderful D. refreshed

42. A. assumed B. appreciated C. admired D. imagined

43. A. But B. Therefore C. Meanwhile D. Moreover

44. A. opposite B. connected C. exposed D. equal

45. A. cause B. reason C. excuse D. effect

46. A. holding B. saving C. catching D. shortness

47. A. quit B. continue C. insist D. fade

48. A. on B. against C. down D. over

49. A. observed B. watched C. noticed D. overlooked

50. A. put up B. look up C. catch up D. take up

51. A. steadily B. abruptly C. closely D. narrowly

52. A. trusting B. doubting C. cheating D. fighting

53. A. strength B. honesty C. will D. power

54. A. struggling B. arguing C. negotiating D. complaining

55. A. strong B. weak C. healthy D. spiritless

第三部分阅读理解(共15小题;每小题2分,满分30分)

请认真阅读下列短文,从短文后各题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。

A

A new study found that inner-city kids living in neighborhoods with more green space gained about 13% less weight over a two-year period than kids living among more concrete and fewer trees. Such findings tell a powerful story. The obesity epidemic(肥胖症的流行)began in the 1980s, and many people think it results from increased portion(食物)sizes and inactivity , but that can't be everything. Big Macs and TVs have been with us for a long time. "Most experts agree that the changes were related to something in the environment," says Thomas Glass of the Hopkins School of Public Health. That something could be a shrinking of the green.

The new research, published in the American Journal of Preventive Medicine, isn't the first to associate greenery with better health, but it does get us closer to identifying what works and why. At its most straightforward, a green neighborhood simply means more places for kids to play — which is important since time spent outdoors is one of the strongest links to children's activity levels.

Glass warns that most studies don't necessarily prove a link between greenness and health, but they're helping spur action. In September the U.S. government approved the No Child Left Inside Act to encourage public initiatives(积极性)aimed at exposing kids to the outdoors.

Finding green space is, of course, not always easy, and you may have to work a bit to get your family a little grass and trees. If you live in a suburb or a city with good parks, take advantage of what's there. Your children in particular will love it — and their bodies will thank you.

56. According to the passage, what might cause children’s inactivity?

A. Less concrete and more trees

B. Increased portion sizes

C. A green neighborhood

D. A shrinking of the green

57. According to the passage, which of the following statements is wrong?

A. Big Macs and TVs have something to do with obesity.

B. If a 100-pound man lives in green space for 2 years, he will lose 13 pounds.

C. Kids should be exposed more to outdoors.

D. Kids gain less weight living in a suburb or a city with good parks.

58. What does the underlined word “spur” in the fourth paragraph mean?

A. improve

B. take

C. encourage

D. stop

59. What might be the best title of the passage?

A. The obesity epidemic

B. Slimmer in the grass

C. Causes of obesity

D. Prevention of obesity

B

Five Element Constitutional Acupuncture(针灸)

Author: Angela Hicks, John Hicks, Peter Mole

Item Regular Price AAMA Practice Member Price

95—53 $69.95 $59.45

Description:This exciting textbook gives a clear, detailed, and accessible

presentation of the main features of constitutional five element acupuncture treatment. It

covers the context and history of this form of acupuncture, as well as the relevant

Chinese medicine theory. After examining the elements themselves, and the functions of

the organs, the book explores the basis of diagnosis(诊断) in five element acupuncture,

possible blocks to treatment, and the treatment itself. It puts this style of treatment into

the context of other styles of acupuncture treatment especially Traditional Chinese

Medicine (TCM) as it is used in the West today.

★A clear and trustworthy exploration of five element constitutional acupuncture.

★A description of the principle aspects of diagnosis within this system, solving inconsistenc ies(前后矛盾) often present in discussions of these aspects.

★An encourage of a particular style and approach in acupuncture, of interest to all schools of thought in Chinese medicine.

★Overall revisions keep the material in this book up-to-date.

★New information on calculation of sample size and effect size features material of increasing importance in the field.

★Updating of all references keep the reader current with the latest real-work in the field.

★Additional student activities within the text offer the reader even more help in learning new material or brushing up on the latest.

★New appendix features an exceptional critique(书评) of a published research paper.

★Two-color format(版式) makes the text visually appealing.

60. The above table and passage is mainly_______________.

A. an advertisement to persuade people to buy the book

B. a comparison between the five elements and TCM

C. an introduction to the author writing this book

D. an introduction to the book on five elements

61. The book mentions all the following but___________.

A. the context and history of acupuncture

B. the relevant Chinese medicine theory

C. the fact people in China know constitutional acupuncture

D. the basis of diagnosis in five element acupuncture

62. People who read the book may find it visually appealing in that_______.

A. it is published in traditional Chinese

B. the book has the advantage of two colors in printing

C. overall revisions keep the material in this book up-to-date

D. Practice Member Price is lower than Regular Price

63. Supposing Jack is an AAMA Practice Member and he has bought ten books, how much has he saved compared with Regular Price?

A. 215 dollars.

B. 195 dollars.

C. 105 dollars.

D. 150 dollars.

C

Tight-li pped elders used to say, “It’s not what you want in this world, but what you get.”

Psychology teaches that you do get what you want if you know what you want and want the right things.Y ou can make a mental blueprint of a desire as you would make a blueprint of a house, and each of us is

continually making these blueprints in the general routine of everyday living. If we intend to have friends to dinner, we plan the menu, make a shopping list, decide which food to cook first, and such planning is an essential for any type of meal to be served.

Similarly, if you want to find a job, take a sheet of paper, and write a brief account of yourself.In making a blueprint for a job, begin with yourself, for when you know exactly what you have to offer, you can intelligently plan where to sell your services.

This account of yourself is actually a sketch (概括)of your working life and should include education, experience and references.Such an account is valuable.It can be referred to in filling out standard application blanks and is extremely helpful in personal interviews.While talking to you, your could-be employer is deciding whether your education, your experience, and other qualifications, will pay him to employ you and your “wares” and abilities must be displayed in an orderly and reasonably connected manner.

When you have carefully prepared a blueprint of your abilities and desires, you have something tangible(实在的) to sell.Then you are ready to hunt for a job.Get all the possible information about your could-be job.Make inquiries as to the details regarding the job and the firm.Keep your eyes and ears open, and use your own judgment.Spend a certain amount of time each day seeking the employment you wish for, and keep in mind: Securing a job is your job now.

64.What do the elders mean when they say, “It’s not what you want in this world, but what you get”?

A.Y ou’ll probably get what you want.B.Y ou are supposed to be practical.

C.Y ou should be dissatisfied with what you have.D.It’s essential to set a goal for your self.

65.A blueprint made before inviting a friend to dinner is used in this passage as ________.A.an example of how to write an application for a job

B.an indication of how to secure a good job

C.a guideline for job seekers to succeed

D.a principle for job evaluation and description

66.According to the passage, one must write an account of himself before starting to find a job because ______.A.that is the first step to please the employer B.that is the requirement of the employer

C.it enables him to know when to sell his services D.it enables him to become clearly aware of himself

D

For many children the search for E.T. or life from another planet may seem to be already over. What is it about this big-eyed creature from outer space that has made America’s children and many adults so excited? Psychologists say that the film E.T., like ancient fairy tales, contains powerful stories that help children through the difficult process of growing up. The message that fairy tales bring to the child is that a struggle against severe difficulties in life cannot be avoided, but that if one does not run away but meets unexpected and often unjust hardships, one overcomes all obstacles(困难) and at the end comes out victorious.

Today’s children, growing up alone in homes separated from other children, need fairy tales even more than those did at the time when the tales were first told. In E.T. they find a fairy tale with a special interest because it is set in the space age, which is closer to their situation than a story set in an old castle. E.T. may not be good-looking physically, but he is totally harmless, kind and charming. No child need fear an outer space filled with creatures like E.T. Actually, children often have a strong need for imaginary playmates.

For all children, the film raises the question of the need to grow up and the desire to stay a child. Elliott decides not to go with E.T. aboard the spaceship, where he could continue living in an imaginary world. As one child said, “Elliott stayed on Earth because he has to grow up and you can’t grow up on the faraway planet of Jupiter. Y ou stay small and a kid like E.T.”

The film offers many ideas from the traditional fairy tale. Firstly, good children get the better of bad adults. Secondly, the hero is put in a difficult position in the early stages of the story but there is a happy ending when he is finally rescued. Thirdly, the film offers the idea of rebirth, which is found in many fairy tales. Finally, the story

also reminds one of “The Three Feathers” by the well-known writers of fairy tales—the Grimm brothers. In this story, the youngest son wins his father’s kingdom by defeating his brothers with the help of an ugly old toad(癞蛤蟆). But to a final test, to bring back the most beautiful woman, he wins again by choosing the toad who turns into a beauty. Thus, it is love which turns even ugly things into something beautiful. It’s easy to see how that is true of

E.T.

67. The story of E.T. tells people______.

A. how difficult the process of growing up can be

B. How parents should take good care of their lonely children

C. victory can be achieved if people face difficulties bravely

D. that children need playmates and fairy tales badly

68. One of the reasons children like E.T. is that______.

A. E.T. is a big-eyed good-looking creature

B. the story is set in an old castle

C. it is an exciting, ancient fairy tale

D.

E.T. is likable, harmless and kind-hearted

69. Elliott did not go with E.T. on board the spaceship because_______.

A. he did not belong there

B. he would look like E.T. there

C. he had to stay on earth and “grow up”

D.

E.T.’s home was an imaginary place that did not exist

70. The theme of “The Three Feathers” is _______.

A. love can turn ugly things into something beautiful

B. good children get the better of bad adults

C. brave people can overcome all difficulties

D. good people will finally enjoy a rebirth

第四部分任务型阅读(共10小题;每小题1分,满分10分)

请认真阅读下面短文,并根据所读内容在文章后的空格内填入最恰当的单词。每空格1个单词。

The introduction of computerized information systems has greatly affected management control in many companies. Even a neighborhood shopkeeper may now use computers to control sales, billing, and other activities. In large companies, electronic data processing systems monitor entire projects and sets of operations.

Before the widespread use of computers, managers could not make full use of a large amount of valuable information about a company's activities. The information either reached managers too late or was too late to be used. Today, managers are facing plenty of data processing and information instruments. In place of a few financial controls, managers can depend on computer-based information systems to control activities in every area of their company. On any kinds of performance measures, the information provided by these systems helps managers compare standards with actual results, find out problems, and take corrective action before it is too late to make changes.

Now, there are about 220 million microcomputers in use in the United States---9 for every 10 citizens. It is estimated that by 2016, 90 percent of American managers will be using some sort of electronic work station. In order for managers to be sure that the computer-based information they are receiving is accurate, they need to understand how computers work. Although in most cases they do not need to learn how to program computers, managers should understand clearly how computerized information systems work; how they are developed; their limitations and costs; and the manner in which information systems may be used. Such an understanding is not difficult to achieve.

One research has found that business firms are more successful in teaching basic information about computers to business graduates than they are in teaching business subjects to computer science graduates.

Title : Widespread use of computerized information systems

Theme The introduction of computerized information systems has a great 71 on

management control.

第五部分 书面表达(满分25分) 你校将开展禁毒宣传, 请你根据下面的表格内容和饼状图写一篇短文。短文内容需包括青少年吸毒原因分析,介绍毒品危害并给同学们提出建议,以便让同学们懂得如何远离毒品。

注意: 1.不要逐句翻译,要有适当发挥,总词数150左右,开头已写好,不计入总词数;

2.要求字迹工整,卷面整洁;

3.参考词汇: 刺激 excitements 十亿billion

In modern society, drugs are becoming a more and more serious problem in the world.__ ___________________________________________________________________________________________ 第二部分 英语知识运用

第一节 单项填空21-25DBDDC 26-30 DBCDA 31-35BDBBD

Great

changes

Difference in the 72 of available information Before: Managers could gain access to limited information of great 73 . After: Rich information from computer-based information systems enables managers to 74 activities in every area. Difference in the speed of gathering information Before: The information couldn ’t 75 managers in time. After: Managers can take corrective action timely to make changes 76 on computer-based information systems. A requirement for ____77___ It ’s necessary for them to have a clear ___78___of computerized information systems’ work, which can be easily 79 . An interesting finding

It ’s 80 to train business graduates than computer science graduates into qualified employees.

毒品的

危害: 1. 毒品交易日益泛滥,每年浪费8000亿美元

(青少年吸毒原因分析饼状图) 2.严重危害健康,加速死亡

3.直接导致和诱发犯罪

远离毒

品的建

议(自

拟) 1. 2. 3. …

第二节完形填空36-40 ABCBA 41-45 CDABC 46-50DABCC 51-55ABCDA

第三部分阅读理解56-59 DBCB 60-63ACBC 64-66 BAD 67-70 CDCA

第四部分任务型阅读71.effect/influence/impact 72.amount/quantity 73.value/importance 74.control

75.reach 76.depending/based 77.managers 78.understanding 79.achieved 80.easier /faster/quicker

第五部分(书面表达)(One possible version)

In modern society, drugs are becoming a more and more serious problem in the w orld. The trade of drugs is widespread, which costs up to $800 billion every year.

As we all know, drugs do great harm to our health, even causing people to die at an early age. Meanwhile, it directly contributes to the happening of crimes. But to our sadness, more and more young people begin taking drugs.

As is shown on the chart above, 30% of the teenagers taking drugs are cheated into doing it, and 50% are driven by curiosity. Another 15% just seek excitements or try to get rid of their anxieties. The rest try it for some other reasons.

In order to protect us students from drugs, what should we do? I think, we should be careful to make friends and stay away from those who always behave badly. Also, it’s very important for us to lead a healthy lifestyle and hold positive attitudes towards life. Do remember that trying drugs out of curiosity is very dangerous.

具体评分要求:

1、本题总分为25分,词数150词左右;低于130、高于170词的扣2分。

2、批改要求:评分时要根据高考要求,先通读全文,初步确定一个档次,然后根据错误的多少,短语和句型的恰当使用,文章的连贯及文采等几个方面最后赋分;

3、大错(时态、语态、关键动词、主谓一致等语法、语用错误)每错1分;小错(标点、大小写每3处、单词拼写每2处算一个大错);

4、批改符号:要点遗漏“△”;大错“—”,小错“○”,阅卷时划出。

5、凡不以一般现在时叙述的,从原得分中扣除3分;对紧扣主题的适当发挥不予扣分;

6、如果书写较差,卷面不洁、难以辨认扣3分。

7、内容要点:每个要点3分,要点需清晰可读;你的观点和感想5分

要点如下:1.毒品交易日益泛滥,每年浪费8000亿美元 2. 严重危害健康,加速死亡3. 直接导致和诱发犯罪 4. 30%青少年由于上当而吸毒 5. 50%青少年出于好奇心而吸毒 6. 15%青少年因寻求刺激或摆脱烦恼而吸毒7. 考生的建议2—3条(50词左右)

【评分标准】按5个档次给分;

第五档(很好);(21-25分)

1. 完全完成了试题规定的任务。

2. 覆盖所有内容要点。

3. 应用了较多的语法结构和词汇。

4. 语法结构或词汇方面有些许错误,但为尽力使用较复杂结构或较高级词汇所致;具备较强的语言运用能力。

5. 有效地使用了语句间的连接成分,使全文结构紧凑。

6. 完全达到了预期的写作目的。

第四档(好):(16-20分)

1. 完全完成了试题规定的任务。

2. 虽漏掉1、2个次重点,但覆盖所有主要内容。

3. 应用的语法结构和词汇能满足任务的要求。

4. 语法结构或词汇方面应用基本准确,些许错误主要是因尝试较复杂语法结构或词汇所致。

5. 应用简单的语句间的连接成分,使全文结构紧凑。

6. 达到了预期的写作目的。

第三档(适当):(11-15分)

1. 基本完成了试题规定的任务。

2. 虽漏掉一些内容,但覆盖所有主要内容。

3. 应用的语法结构和词汇能满足任务的要求。

4. 有一些语法结构或词汇方面的错误,但不影响理解。

5. 应用简单的语句间的连接成分,使全文内容连贯。

6. 整体而言,基本达到了预期的写作目的。

第二档(较差):(6-10分)

1. 未恰当完成试题规定的任务。

2. 漏掉或未描述清楚一些主要内容,写了一些无关内容。

3. 语法结构单调、词汇项目有限。

4. 有一些语法结构或词汇方面的错误,影响了对写作内容的理解。

5. 较少使用语句间的连接成分,内容缺少连贯性。

6. 信息未能清楚地传达给读者。

第一档(差):(1-5分)

1. 未完成试题规定的任务。

2. 明显遗漏主要内容,写了一些无关内容,原因可能是未理解试题要求。

3. 语法结构单调、词汇项目有限。

4. 较多语法结构或词汇方面的错误,影响对写作内容的理解。

5. 缺乏语句间的连接成分,内容不连贯。

6. 信息未能传达给读者。

不得分:(0分)

未能传达给读者仟何信息:内容太少,无法评判;写的内容均与所要求内容无关或所写内容无法看清。

2018年中考科学模拟试题1(含答案)

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[C] 回归系数的显著性 [D] 估计标准误差的显著性 9. 样本方差和总体方差在计算上的区别是( )。 [A] 只有样本方差才使用了全部数据 [B] 样本方差是用数据个数去除离差平方和 [C] 只有总体方差才使用了全部数据 [D] 总体方差是用数据个数去除离差平方和 10. 2~(,12)X N μ,则(||36)P x μ-≤=( )。 二、【多项选择题】 11. 研究促销方式对销售量的影响,促销方式共有三个水平,则这种方差分析是 ( )。 [A] 单因素方差分析 [B] 双因素方差分析 [C] 三因素方差分析 [D] 单因素三水平方差分析 12. 定量数据是由( )计量所形成的数据。 [A] 列名水平 [B] 有序水平 [C] 间隔水平 [D] 比较水平 13. 利用Z 统计量可以对总体比例进行假设检验,则下列说法中正确的是( )。 [A] Z 统计量只是一个近似的统计量 [B] 进行这种检验需要比较多的样本 [C] 对总体比例不能进行单侧检验 [D] 这种检验的理论基础是中心极限定理 14. 贝努里试验具有以下哪些性质( )。 [A] 试验结果对应于一个离散型随机变量 [B] 试验包括几个相同的试验 [C] 每次试验"成功"的概率p 不变,"失败"的概率(1)p -也不变 [D] 每次试验都只有两个可能结果:"成功"或"失败" 15. 下列说法正确的有( )。 [A] 调和平均数只适用于定比数据 [B] 平均差以中位数为中心 [C] 四分位差反映了中间50%数据的离散程度 [D] 极差是一组数据的最大值与最小值之差 16. 设随机变量2~(,)X N μσ,其中μ已知,方差2σ未知,若从这一总体中随机地抽 取一个样本12,,,n x x x ,则可构造的统计量为( )。 [A] x [B] 32x μ+ [A] 0.954 [B] 0.682 [C] 0.997 [D] 0.5

模拟试卷一(带答案)

2008 LA物理师模拟试卷(一) 一单选题(共120小题,每小题只有一个选项是正确的) 1 L壳层最多可容纳的电子数为多少? A 2 B4 C6 D8 E10 2 光子能量的表达式是哪项?(C为光速,h是普朗克常数) A E=hC B E= hC/λ C E=hλ D E=hλ/C E E=Cλ 3 只有当入射X(γ)光子能量大于多少时才能发生电子对效应? A 200Kev B 400Kev C 1.02Mev D 1.25 Mev E 1.33 Mev 4 用于放射治疗吸收剂量校准及日常监测的主要方法是: A量热法 B 电离室法C热释光法 D 半导体法 E 胶片法 5 指形电离室壁多选用什么材料? A铝 B 碳C石墨 D 酚醛树脂E塑料 6 电离室的有效测量点规定在电离室中心点的哪个方向(面向电离辐射入射方向)? A 前方 B 后方 C右侧方 D左侧方 E中心点 7 如以r表示电离室的半径,则钴-60γ射线的有效测量点位于:(P64) A 0.1r B 0.3r C 0.5r D 0.75r E 几何中心 8 关于胶片在剂量学中的应用哪项描述错误?(P92) A检查射野的平坦度和对称性 B 获取离轴比及百分深度剂量等剂量学数据 C 验证相邻射野间剂量分布的均匀性 D 验证治疗计划系统剂量计算的精确度 E 验证低能X射线的剂量分布误差 9 以水为吸收介质,康普顿效应占优势的能量段是: A 1-10Kev B 10-30Kev C 30Kev-25Mev D 25-100Mev E 100-125Mev 10 以下哪项为天然放射性同位素? A镭-226 B 铯-137 C 钴-60 D 铱-192 E 碘-125 11 近距离治疗所用源位于200Kev-2Mev能量段的同位素所具有的物理特征是: A剂量率常数不变 B 剂量率常数随能量变化 C 剂量率常数随组织结构变化 D 与生物组织的相互作用服从康普顿弹性散射规律 E 光电效应占主导地位

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