超市节能法则
超市节能法则

When you are shopping in a supermarket, you probably think that you will spend lots of money and time in shopping. Sometimes, you will find that all the lights that keep the supermarket bright. Think about all the water taps in the toilet. Think about all the air conditioning in summer. Saving energy is a hot topic for such a big place!
　　Many things at the supermarket use energy. Electric lights, infrared taps and air conditioning need electricity to work. One way to save energy is by keeping lights clean. More and more dust and dirt make the lights less bright. When supermarkets keep lights clean, they can use fewer lights and keep the area just as bright. Using fewer lights means using less energy.
When you turn on the water tap, the water starts to flow. You don't have to touch a thing. Why do supermarkets have such special taps? The answer is simple. They save water. Sometimes people forget to turn off the water tap after they wash. Infrared taps turn themselves off.

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1.What’s the hot topic for a big supermarket?

A To save time.       

B To save energy.  

C To spend money and time. 

D To keep the supermarket bright. 

解析：选B。细节理解题。根据第一段最后一句Saving energy is a hot topic for such a big place!可知对于像超市这么大的地方来说，节能是一个热门话题，故选B。

2.Which of the following cannot save energy?

A Using fewer lights.                    

B Using infrared taps.

C Keeping lights clean.                 

D Using air-conditioning.

解析：选D。细节理解题。根据第二段第二句Electric lights, infrared taps and air conditioning need electricity to work.可知用空调不能节能，故选D。

3.Why do supermarkets use infrared taps?

A Because they save water.      

B Because they look special.  

C Because they turn themselves on.    

D Because they are cheaper than normal taps. 

解析：选A。细节理解题。根据最后一段倒数第三句They save water.可知红外线水龙头能节约用水，故选A。

4.Which of the following is NOT true?

A Many things at the supermarket use energy.

B One way to save energy is by keeping lights clean.

C More and more dust and dirt make the lights less bright.

D People have to turn infrared taps off after they wash.

解析：选D。细节理解题。根据最后一段最后一句Infrared taps turn themselves off.可知红外线水龙头能自动关水，故选D。

5.What’s the passage mainly about?

A A hot dog.      

B How to pick good lights.

C Lights, taps and air-conditioning.          

D Energy saving at the supermarket.

解析：选D。主旨大意题。根据全文可知文章主要讲述了超市的节能法则，故选D。