24春国开电大四川广播电视大学理工英语3unit7单元自测7（预备知识：Unit 7；10分）参考答案_1

unit7_单元自测7（预备知识：Unit 7；10分）0

unit7_单元自测7（预备知识：Unit 7；10分）0

国开搜题

试卷总分:100 得分:100渝粤搜题

1. — ?That’s a nice car!

— ? ? ? ? ? ? ? ? ? ? ??渝粤题库

A. Oh,thanks.I go it yesterday.

B. You can have it.

C. Sorry,it's too cheap.

答案:

2.— ?Sorry. I have taken your car key by mistake.

渝粤题库，我们的目标是要做全覆盖、全正确的答案搜索服务。

— ? ? ? ? ? ? ? ? ? ? ? ?

A. You're welcome.

B. That's right.

C. It doesn't matter.渝粤题库，我们的目标是要做全覆盖、全正确的答案搜索服务。国开形成性考核答案

答案:国开搜题

3.?It was a __________ relationship between the boy and the man.?国开形成性考核答案

A. confuse

B. mix

C. complex

答案:渝粤题库，我们的目标是要做全覆盖、全正确的答案搜索服务。

4.All the mobile phones must __________?before the meeting begins.?

A. turn off

B. be turning off

C. be turned off

答案:渝粤教育

5.The school conducted a(an) {图} __________ investigation on the accident. ?

A. positive

B. extensive

C. negative

答案:渝粤题库

6.二、完型填空：阅读下面短文，从A、B、C三个选项中选择合适的内容将短文补充完整。

渝粤搜题

? ? ?You jump into a car, tell it where you want to go then sit back and let a computer take control. It seems a dream in the future. It isn't.

? ? ?In many ways such driverless cars are already with us. There is partial automation in many cars, such as intelligent braking, lane departure warning and automatic parking. The systems are there ?cars can pretty much drive themselves. No one noticed the introduction of cruise control. We've got collision avoidance, and we'll soon have automatic lane change.渝粤教育

? ? ?Improving this technology should make the roads safer. Machines are much better at following rules than humans. Driveway signs advise drivers to slow down to avoid ?jams. They are often ignored by drivers. But it won't happen ?a computer. Driverless cars could also choose the best route to avoid traffic jams.国家开放大学作业答案

? ? ?Fewer jams will mean ?stop-start driving. Maintaining smooth and constant speeds will improve fuel efficiency. Computers could also be programmed to take the greenest route, rather than the fastest one. Under?computer control, cars could also travel much closer together.

? ? ? They can effectively “slipstream” one another and use less fuel to move themselves forward. They can even form multi-car “trains” going ?high speeds. However, with driverless cars on the roads, there will be potential trust issues between people and machines. We could therefore see guard rails back on the sides of pavements. This would be a backwards step.

1. ? ?A. because ? ? ? B. so that ? ? ? ?C. such as渝粤题库

2. ? ?A. creating ? ? ? ?B. to creat ? ? ? C. creat

3. ? ?A. with ? ? ? ? ? ? ?B. to ? ? ? ? ? ? ? C. on渝粤题库国开形成性考核答案

4. ? ?A. more ? ? ? ? ? ? B. little ? ? ? ? ? ?C. less

5. ? ?A. over ? ? ? ? ? ? ?B. in ? ? ? ? ? ? ? C. at

(1).

A. A

B. B

C. C

答案:

(2).

A. A

B. B

C. C一网一平台答案渝粤搜题

答案:

(3).

A. A

B. B

C. C

答案:

(4).

A. A

B. B

C. C

答案:

(5).

A. A

B. B渝粤题库

C. C

答案: