朱明zhubob综合英语3Unit7单元练习打印版

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综合英语3Unit7单元练习

lary：

Choose the best answer for each of the following items. 请选择题型 Vocabulary

Grammar Dialogue Reading

1．A scientific discovery is often made long before someone is able to put it to .

A. usage

B. use

C. broken up

D. used

答案：B

“put it to use”是固定搭配，表达应用于实践的意思，其他选项没有这种搭配。

2. Scientist discovered how to atoms decades before the invention of atomic bomb.

A. split

B. break

C. destroy

D. tear

答案：A

split, 分裂； break，打破；destroy，破坏；tear撕裂。根据句子的意义，应该是分裂原子，所以选择A.

3. The word laser "light amplification by stimulated emission of radiation".

A. stand by

B. stands for

C. stand in

D. stand out

答案：B

stand by，支持； stands for，象征，代表；stand in代替；stand out 显眼。根据句子的意思应该选择B.

4. To many people, lasers are very , but a laser is simply a device that produce a

very strong light.

A. mysterious

B. fantastic

C. terrific

D. amazing

答案：A

mysterious神秘的；fantastic，奇异的；terrific 绝妙的 ；amazing 惊人的。根据句子的意思“但是激光仅仅是……”，所以应该选择A.

5. The light from the sun moves away from its source in all directions, so its strength is

very .

A. broken out

B. spread out

C. looked out

D. figured out

答案：B

broken out 爆发；spread out 分散；looked out 小心；figured out 搞清楚根据句子的意思，应该是光线的分散，所以选择B.

light from a laser in a narrow beam.

A. connects

B. contacts

C. concentrates

D. confines

答案：C

connect 联结；contact 联系；concentrate 集中；confine 限制。根据句子的意思，应该是光线的集中，而不是其它，所以选择C.

7． Laser is by a process called stimulated emission.

A. produced

d

C. born

D. chosen

答案：B

produce，生产；create，产生；born，bear的过去分词，出生；chosen，choose的过去分词，选择。句子谈到的是激光的产生方式，所以选择B.

8. The atoms of a certain substance are in such a way that they produce coherent

light.

A. excited

B. produced

C. created

D. chosen

答案：A

excite, 刺激；produce生产；create 产生；chosen，chose的过去分词，选择。根据句子的意思应该选择Ａ．

9．A person working with a laser can this coherent light in any direction.

e

答案：C

aim 瞄准，动词，其他三项均为名词。

10． As the laser was developed, scientists began thinking of a applications for it.

ular

l

cal

al

答案：C

particular, 特别的； special，特殊的；practical，实际的；especial，同special。根据句子的意思，应该是实际的应用，所以应该选C.

11．One of the earliest uses was to make measurements of distance and speed.

A. precise

B. definite

C. absolute

D. exact

答案：A

precise, 精确的；definite，一定的；absolute，绝对的； exact，确切的。根据句子的意

思，应该是精确的测量，所以应该选择A.

12． As time passed, many more for the laser were developed.

A. applications

B. applicants

C. applies

D. applying

答案：A

application, 应用；applicant，申请者；applies，应用，动词；applying，应用，动名词。根据句子的意思，应该是更多的应用，C, D 词性不对。

13． Lasers are also important in the of cancer.

A. heal

B. recover

C. treat

D. treatment

答案：D

heal, 治愈；recover，恢复 ；treat，，动词；treatment，，名词。根据句子的意思，应该选择D.

14． A laser beam can completely destroy a cancerous growth without any

dangerous cells.

A. leaving alone

B. leaving behind

C. leaving out

D. leaving off

答案：B

leaving alone, 独自呆着；leaving behind，留下；leaving out，遗漏；leaving off，戒除。根据句子的意思，应该是不会留下任何危险的细胞，所以选B.

15. More recently, lasers have been used to skin discolorations.

A. take

B. remove

C. recover

D. move

答案： B

take, 携带；recover, 恢复；move, 移动。remove, 除去，符合句子的意思，所以应该选B.

16． A laser beam can be made narrow enough to a single cell.

A. focus on

B. pay attention to

C. concentrate on

D. lay stress on

答案：A

focus on 聚焦；pay attention to，注意，留心；concentrate on，注意力集中；lay stress on

强调。根据句子的意思，应该是光线的聚焦，所以选A。

17． Scientists study how the plants sunlight into energy.

A. change

B. convert

C. shift

D. transform

答案：B

change, 改变；convert，转换；shift，替换 ；transform 变形。Convert 指转换成另外一种物质或形态，符合题意，所以选B.

18． Over the past twenty years, personal computers have brought changes to the

home and workplace.

A. gigantic

B. curious

C. terrible

D. tremendous

答案：D

gigantic, 巨大的，庞大的（更多指物理上的大小）；curious, 好奇的；terrible, 可怕的；tremendous, 惊人的，巨大的。巨大的变化，只有tremendous符合题意，所以选D.

19．Now it is clear that laser light has applications.

ous

nt

ious

us

答案：D

dangerous, 危险的；coherent, 连贯的，一致的；mysterious, 神秘的；numerous,大量的，许多的。只有numerous符合句意，所以选D.

20．It sounds the problem is in the engine.

A. like

B. as though

C. although

D. if

答案：B

as though = as if, 似乎。其他选项不符合句子的意思，所以选择B.

r：

Choose the best answer for each of the following items. 请选择题型 Vocabulary

Grammar Dialogue Reading

1．Incoherent light, like the light from the sun or the light bulb, from its source in

all direction.

A. move away

B. moving away

C. moves away

D. moved away

答案：C

句子缺少谓语部分，主语为单数第三人称 incoherent light, 因而选C.

2． The light from a laser, in only one direction and in a narrow beam,

is much stronger.

A. moves; concentrates

B. moving; concentrating

C. moving; concentrated

D. moved; concentrates

答案：C

move 与主语之间的关系是主动的，而用现在分词，concentrate与主语之间的关系是被动的，用过去分词，所以选C.

3． Laser light is created by a process stimulated emission.

A. called

B. calling

C. is calling

D. is called

答案：A

“a process called stimulated emission” 实际上是“a process which is called stimulated

emission”的简化，过去分词短语 called stimulated emission 做 a process 的定语。

4．The atoms of certain substance are excited in such a way they produce

coherent light.

A. which

B. who

C. that

D. what

答案：C

such …that …句型表示结果或目的，such 后用名词，所以选C。

5．A person with a laser can aim this coherent light, a laser beam, in

any direction.

A. work; call

B. working; called

g; call

D. worked; calling

答案：B

work with a laser 的逻辑主语是people，所以用现在分词结构做定语；而coherent light 被称为 a laser beam 存在被动的关系，所以用过去分词。故选B。

6． The TV set hasn't been repaired yet. It looks it will be another week.

A. as if

B. although

C. like

D. if

答案：A

as if 好象、似乎，符合题意，所以选A.

7． It to have been ready last week. But you haven't done it.

A. supposes

B. is supposed

C. was supposed

D. supposed

答案：C

be supposed to 意为“应该”，表示一种责任和义务。句中有表示过去的时间短语last week,

所以应该选C.

8．My roof leaks when it rains and it hasn't been repaired. When I got home yesterday, the

water into my living room.

A. poured

pouring

C. was poured

D. pouring

答案：B

根据句子的意思应该使用过去进行时态，表示“我到家时，水正在倾盆而下，漏到卧室里”。所以应该选B。

9． I was driving to work yesterday, and it as if smoke out of the

exhaust pipe.

A. looks … came

B. looked … was coming

C. is looking … came

… is looking

答案：B

本题考查时态的混合用法。句子开头用了过去进行时，强调“我正在开车的时候，发生了某事”这个概念，“发生了某事”用一般过去时，而“冒烟”这件事情也是正在进行的。故选B.

10．A laser beam on a single cell, on part of a cell, or even individual atoms and

molecules.

enough narrow focus

made enough narrow to focus

be made narrow enough to focus

D. may be made enough narrow to focus

答案：C

本题考查enough作为副词修饰形容词时的位置问题，。一般来说，enough 放在被修饰的形容词后面。

ue：

Choose the best answer for each of the following items. 请选择题型 Vocabulary

Grammar Dialogue Reading

1． — Repair department. May I help you?

— .

. I'd like to know if my CD player has been repaired yet.

B.I asked for the repair department.

a moment, please. The manager will be in soon.

答案：A

服务行业人员接听电话时，习惯上首先报出自己的机构名称。挂电话者会直接说出自己挂电话的目的。选项A符合语言情境。

2． —Sorry, sir, it's not ready yet.

— .

A. Please do. I'll be waiting.

, hold on, please.

C. Not yet? Is there some problem?

答案：C

首句的意思是：“对不起，先生，还没好呢。”只有选项C（还没好？有什么问题吧？）符合语境。

3． — Is there some problem?

— .

A.I am sorry. The parts have been ordered, but they haven't come in yet.

was supposed to have been ready last week.

C. I will call you as soon as the repair is finished.

答案：A

首句询问：“是不是有什么问题？”这样回答时，需要直接针对是否有问题来回答。故选A。

4．— I need to speak to Mr. Tucker. This is a very urgent matter.

— .

a minute. Sorry, it is not ready yet.

B. what's the problem?

, I will be waiting.

答案： B

首句表示有急事，需要人。选项A的前半段是可以的，可是后半句没有任何关系。选项C更象第一个说话人说的话。

5．—Hello, Mr. Snyder. What can I do for you?

— .

A. My car sounds like a motorboat at full speed.

looks as if you need a new radio.

C. We'll take a closer look, and get back to you later today.

答案： A

首句询问需要帮什么忙？是服务行业常用语。回答时需要直接说明有什么问题需要帮忙就好了。选项B、C看上去是服务人员的话。