24秋国开电大贵州广播电视大学理工英语2Unit7 形考成绩单元自测7（预备知识：Unit 7；10分）参考答案

Unit7 形考成绩_单元自测7（预备知识：Unit 7；10分）0

Unit7 形考成绩_单元自测7（预备知识：Unit 7；10分）0

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. — I came out first in the English Speaking Contest.

— ________________________

A. Congratulations!渝粤教育

B. You can say it again!

C. It’s very nice of you .

答案:

2.— Mary, our team will play against the Rocket next weekend. I’m sure we will win.

— ________________________

A. Cheers！

B. ?Good luck ！

C. ?Congratulations！

答案:

3.— Jack?and I will celebrate our?20th?wedding anniversary next month.

国开形成性考核答案

— Oh, ________________________

A. ?cheer up!国开搜题

B. well done !

C. congratulations！渝粤题库

答案:

4.My friend knows where he can_____?a good used car for you at a reasonable price.

A. pick up渝粤题库

B. pick off

C. pick out

答案:

5._____she comes or not makes no difference.

A. ?Whether?

B. That渝粤搜题

C. What

答案:

6.二、阅读理解：阅读下面的短文，根据文章内容进行判断，正确为“T”，错误为“F”。

N ew M aterial C an C ool B uildings

渝粤题库

Researchers at Stanford?University have developed a new material that can move heat out of buildings and into space. The material can cool buildings even on hot days.

The cooling material is a very thin sheet with many layers that could be placed on a roof like solar panels. However,?instead of turning sunlight into energy as solar panels do, the material turns heat into infrared radiation.

Shanhui Fan is an electrical engineering professor at Stanford?University. He says that the panels have a layer of material that is like sand. The panels also?act like a mirror. They take heat out of buildings and reflect the light from the sun. Both the heat and sunlight are sent 100 kilometers into outer space.

The panels are cool to the touch, even in the sun. Researchers say they can reduce the indoor temperature to nearly 5 degrees Celsius below the temperature outside.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。一网一平台答案

Mr. Fan says it is like having a window into space. He says the heat is sent directly into space without warming the air.?Buildings in developing countries that do not have electricity or air conditioning could use the panels.In areas where one is off-grid,there is a significant potential benefit for storing medicine or even food.?In many of these situations, being able to reduce the temperature is important. And this would provide a way to do it.

The Stanford researchers described their technology in the science publication Nature . They say the main problem is creating actual cooling systems using the high-tech panels. It may be possible to develop a cooling spray technology in the next three to five years that could be used on existing?solid structures.

?

1. The material can cool buildings only?on cold?days.

2. The material turns heat intoinfrared radiation?because it is a very thick sheet with many layers that could be placed on a roof like solar panels.渝粤教育

3. The heat of the buildings?and sunlight are sent 100 kilometers into outer space?by the panels.

一网一平台答案

4. The off-grid areas may use the panels to reduce the temperature of buildings to store medicine or even food.

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。

5. A?cooling spray technology?may be developed?in the near future that could be used on existing solid structures.

(1).

A. T

B. F渝粤教育

答案:

(2).渝粤教育

A. T

B. F

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。

(3).

A. T国开搜题

B. F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:

(4).一网一平台答案

A. T

B. F

答案:

(5).渝粤题库

A. T

B. F国开搜题

答案: