Researchers at Stanford University have developed a new material that can move heat out of buildings and into space. The researchers say 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. He says that the panels act like a mirror. They take heat out of buildings and reflect the light from the sun. He says both the heat and sunlight are sent 100 kilometers into outer space.

“It’s a structure that cools itself without electricity input, even under the sun. So, what it does is basically radiate heat to outer space and also reflect the sunlight so it doesn’t get heated up by the sun.”

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.

Mr. Fan says it is like having a window into space. He says the heat is sent directly into space without warming the air.

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. They say it may be possible to develop a cooling spray that could be used on existing solid structures.

The researchers believe the cooling spray technology could be developed in the next three to five years. They say as much as 15 percent of the energy used in the United States is spent providing power to air conditioning systems.

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1.The new material is invented in______.

A India

B France

C America

D Russia

解析：选C。C 细节理解题。根据第1段第1句Researchers at Stanford University have developed a new material that can move heat out of buildings and into space可知。Stanford University位于美国内，故选C。

2.The new material is like________.

A water

B sand

C earth

D rock

解析：选B。B 细节理解题。根据第2段第2句He says that the panels have a layer of material that is like sand可知，答案为B。

3.What does the underlined word “panel” mean in Chinese?

A 全体陪审员

B 座谈小组

C 嵌板

D 仪表板

解析：选C。C 词义猜测题。根据第2段第3句He says that the panels act like a mirror可知，这些嵌板就像镜子一样。

4.Which of the following is not true according to the passage?

A The researchers say the material can cool buildings even on hot days all day and night.

B The material takes heat out of buildings and reflects the light from the sun.

C The material is cool to touch, even on hot days.

D The new material will be widely used next year.

解析：选D。D 细节理解题。根据最后1段第1句The researchers believe the cooling spray technology could be developed in the next three to five years可知，选D。

5.What’s the best title of the passage?

A A new kind of material

B A professor at Stanford University

C A window to space

D Air conditioning system

解析：选A。A 主旨大意题。整篇文章都在讲一种新材料，它能使室内温度降低，以后还会得到广泛应用。