24春国开电大春四川开放大学理工英语4单元自测4（10分）答卷参考答案

单元自测4（10分）答卷

单元自测4（10分）答卷

单元自测4（10分）

试卷总分:100 得分:100

一、选择填空：阅读下面的对话或句子，从A、B、C三个选项中选出一个能填入空白处的最佳选项。

1. —They are testing the 3D printer. Don’t you come and see it?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。

—What????????????????????????

A. Where is it displayed?

B. ?It really matters.

C. That’s fine.?国开形成性考核答案

答案:

2.—?Do you?like that technology exhibition?

— Yes, I?like it very much. ?????????????????????.?

A. ?It finally comes true.一网一平台答案

B. It shows me the impressive magic power of 3D printing.

C. It is a good chance.

答案:

3.— Do you prefer a portable?or a clumsy?3D printer?

— ?????????????????????.

A. ?No, a portable 3D printer is more useful.

B. Yes, I?would not have a clumsy one.国家开放大学作业答案

C. I prefer a portable?one to a clumsy one.

答案:

4.Flowers grow well?in a warm climate.?Similarly, technology ____ in a harmonious?society.?

A. is flourishing

B. will flourish

C. ?flourishes

答案:

5.3D printers have spread from labs to industrial?factories, ____?they are being cheaper and cheaper.?

A. so

B. and国开形成性考核答案

C. yet?渝粤题库

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。

6.二、阅读理解：阅读下面的短文，根据文章内容从A、B、C三个选项中选出一个最佳选项。

（课外资料）

In the grass, a?baby?duck was hatched (孵化) out in a college?biology lab with a backward left foot. At the time, it?probably wouldn’t have survived,?if?Mike Gary?didn’t recommend a proper operation to cut off that bad foot.

Months after the healing process, engineers at Novacopy Company produced a 3D printed?model?that would be used to create a prosthetic?(修复的)?foot for?the duck. Considering that ABS plastics were?not flexible enough for this type of exercise, the Novacopy company made a three-dimensionally modeled foot made of silicone,?with the hope to create a permanent?prosthesis(假肢)?for the duck.

It took just 13 hours to produce. This 3D prosthesis demonstrated the 3D?technologies can?be used not only for human application, but also in foreign subjects such as animals and other medical treatments.渝粤教育

?

Where was the baby duck hatched out? 1渝粤搜题

??A. In a?college?biology lab.

??B. In a back yard.

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。

??C. In Noacopy Company.

2. What?was wrong with the baby?duck? 2

??A. It didn’t survived.

??B. It was born with a backward left foot.国家开放大学作业答案

C. Mike Gary?cut off that bad foot.

3.?Could ABS plastics be used to?produce a 3D printed?model?that would be used to create a prosthetic?foot for?the duck? 3

??A. No, because ABS plastics were?not flexible enough.

??B. Yes, but it could only be produced by Novacopy Company.

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。

??C. Yes, because it was made of silicone.渝粤教育

4. How long did it take to create a permanent?prosthesis for the duck? 4

??A. 10 hours.

??B. 13 hours.

??C. 30 hours.

国家开放大学作业答案

5. What did the last sentence of this passage indicate? 5

国开搜题

??A.?3D?technologies can?be used only for human application.

??B. 3D?technologies can?be used only for?foreigners.

??C. 3D technologies?can?be used to?human, animals and other medical treatments.渝粤教育

(1).__1__

A. A

B. B

C. C

答案:

(2).__2__

A. A

B. B

C. C

答案:

(3).__3__

A. A

B. B

C. C

答案:

(4).__4__

A. A

B. B

C. C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。

答案:

(5).__5__

A. A

B. B渝粤教育

C. C一网一平台答案

答案:渝粤题库