24秋国开电大春浙江开放大学理工英语2单元自测7（预备知识：Unit 7；10分）答卷参考答案

单元自测7（预备知识：Unit 7；10分）答卷

单元自测7（预备知识：Unit 7；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。渝粤题库

1. — Congratulation！You won the prize for best photography.

— ________________________

A. Yes, it’s true.

B. Thank you.

C. No, I?didn’t do it very well.

答案:

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

— Oh, ________________________

A. ?cheer up!

B. well done !

C. congratulations！

答案:

3.— Linda, have a nice holiday!

一网一平台答案

— ________________________

A. Yes, what you said is right.?

B. Don’t mention it.渝粤搜题

C. Thank you. The same to you.国开搜题

答案:

4.If you don’t want to go, I will go _____ you.

A. instead

B. instead of

C. of instead

答案:

5.Children often dream of ________ they want to become when they grow up．渝粤搜题

A. what渝粤搜题

B. that

C. which

答案:渝粤教育

渝粤题库

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”。

New Material Can Cool Buildings

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.渝粤教育渝粤搜题

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.国开形成性考核答案国开搜题

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.

国家开放大学作业答案

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

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. 2

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

渝粤教育

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

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

(1).cloze Subject

A. T国家开放大学作业答案

B. F

答案:

(2).cloze Subject

A. T国家开放大学作业答案

B. F

答案:国开形成性考核答案

(3).cloze Subject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. T

B. F

答案:

(4).cloze Subject

A. T

B. F

答案:

(5).cloze Subject

A. T

B. F一网一平台答案

答案: