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_科技英语练习3 4 习题以及答案

练习3

2、现有的化学教科书均提到了这一现象。

All the chemistry textbooks available mention this phenomenon.

11、由于结构简单、价格低廉，这种机器深受用户青睐。

Simple in structure and low in price,this machine is warmly received by users. 12、与普通的观念（common belief）相反，戈登（Gordon）博士并不是第一个使

用该金属的人。Contrary to common belief,Dr.Gordon was not the first to use the metal.

15、这是一根长为5米的直线（straight line）。This is a straight line5meters long.

练习4

1、这些新设备与旧的相比的优点之一是它们的体积小。

One of the advantages of these new devices over the old ones is their small size.

2、由于其极为重要，这个电路（circuit）将在后面详细讨论。

Because of its great importance,this circuit will be discussed in detail later.

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2013年科技英语在线考试题目及答案汇总

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Lessons 34新概念英语第二册课后答案详解

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英语语法专项练习句子专项训练3 一、把下列单数句改为复数句。 1.That tree is in front of my house. Those trees are in front of my house. 答案解析：单数句改为复数句，主要是将主语和谓语等对应改为复数就可以了。that→those，tree→trees，is→are 2.There is a book on the desk. There are some books on the desk. 答案解析：单数句改为复数句，主要是将主语和谓语等对应改为复数就可以了。is→are，a→some，book→books 3.There is a woman near the house. There are some women near the house. 答案解析：单数句改为复数句，主要是将主语和谓语等对应改为复数就可以了。is→are，a→some，woman→women 4.I’m a student. We are students. 答案解析：单数句改为复数句，主要是将主语和谓语等对应改为复数就可以了。I→we，am→are ，studen t→students 5.She is a doctor. They are doctors. 答案解析：单数句改为复数句，主要是将主语和谓语等对应改为复数就可以了。she→they ，is→are，doctor→doctors.

6.There is a picture on the wall. There are some pictures on the wall. 答案解析：单数句改为复数句，主要是将主语和谓语等对应改为复数就可以了。is→are，a→some，picture→pictures 7.Is there a baby in the room? Are there any babies in the room? 答案解析：单数句改为复数句，主要是将主语和谓语等对应改为复数就可以了。is→are,a→any,baby→babies 8.He has a Chinese friend. They have some Chinese friends. 答案解析：单数句改为复数句，主要是将主语和谓语等对应改为复数就可以了。he→they,has→have,a→some,friend→friends 9.Is there an apple on the tree? Are there any apples on the tree? 答案解析：单数句改为复数句，主要是将主语和谓语等对应改为复数就可以了。is→are,an→any,apple→apples 10.I have a pen. We have some pens. 答案解析：单数句改为复数句，主要是将主语和谓语等对应改为复数就可以了。I→we,a→some,pen→pens 11.M y English teacher has a dress. Our English teachers have some dresses. 答案解析：单数句改为复数句，主要是将主语和谓语等对应改为复数就可以了。my→our,teacher→teachers,has→have,a→some 12.T here is a pencil-box in the bag. There are some pencil-boxes in the bag.

大一英语期末考试试题内含答案整理编辑版

大学英语预备阶段练习（一）（Unit 1~4） Ⅰ Word Building Directions: Fill in the blanks with the correct form of the words given in the brackets. 1.Thank you very much for your ____ advice. I followed it and succeeded at last. (value) 2.His business has ____ rapidly since his brother came to help. (development) 3.After a two-day discussion, we finally found a ____ to the difficult problem. (solve) 4.Prices ____ high for quite a while .People began to complain about it. (remaining) 5.I don’t think it ____ to finish all the work today. We can go on with it tomorrow.(necessity) 6.It is obviously not ____ to leave a 3-year-old boy alone at home. (properly) 7.The tourists saw a beautiful ____ when they climbed onto the top of the mountain.(scene) 8.Traveling in the desert is a challenging ____ to most people. ( inexperience) 9.____, I don’t think it possible to finish the task in two days. (person) 10.T he government must make sure that the economy is developed in the right ____.(direct) Ⅱ V ocabulary and Structure Directions: Choose the best one from the four choices to complete the sentence. 11.T he temperature ____ throughout the day in that part of the country. A. very B. remains C. differs D. varies 12.T he game is full of violence and will certainly have a bad ____ on young players. A. meaning B. pain C. loss D. influence 13.T he warm-hearted elderly lady downstairs is always ____ to help others. A. real B. ready C. practical D. polite 14.T he question is ____ difficult in the exam today. Don’t you think so? A. therefore B. since C. rather D. otherwise 15.S he used to live in a lovely ____ building near the sea. A. 3-story B. 3-stories C. 3-classed D. 3-classes 16.T here are different ____ of transport in big cities for you to choose when you go out. A. means B. mean C. meanings D. meaning 17.T hey did not take a rest until the job was ____ finished. A. straightly B. specially C. completely D. fairly 18.T he bookstore owner ____ the old magazines with a new ones to attract more readers. A. required B. reviewed C. repeated D. replaced 19.W ould you like to buy the book? It is ____ reading. A. worthy B. firm C. further D. worth 20.S he wears sunglasses to ____ her eyes from the sunshine in summer. A. prepare B. produce C. protect D. provide 21.W e all like her very much for her pleasant ____: kind, gentle and warm-hearted. A. character B. chance C. chairman D. skills 22.All the students enjoyed the wonderful ____ by the professor that afternoon. A. discussion B. lecture C. advice D. solution 23.I f you have confidence in yourself first, you will not be _______ by others easily. A.won B. doubled C. defeated. D. delayed 24.T he little girl developed a strong _______ on her new friends. A. dependence B. development C. independence D. difference 25.T he student from the countryside was forced to quit school for ____ of money. A. love B. lack C. lending D. look