阅读短文，选择正确答案。
At the shopping mall, you probably think about spending, not saving. Think about all the lights that keep the
mall bright. Think about all the water faucets (水龙头) 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 mall use energy. Electric lights, infrared (红外感应) faucets and air- conditioners 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 malls keep lights clean, they can use fewer lights and keep the area just as bright. Using
fewer lights means using less energy.
You step up to the water faucet. The water starts to flow. You don't have to touch a thing. Why do malls
have such fancy faucets? The answer is simple. They save water. Sometimes people forget to turn the water
off after they wash. Infrared faucets turn themselves off.
The…….
1. _____ is a hot topic for a big mall.
[ ]
A. To spend money
B. To Save energy
C. To keep the mall bright
D. To buy things
2. What will the fourth paragraph probably talk about?
[ ]
A. How to save water when using infrared faucets irl the mall.
B. How to save energy when using air-conditioners in the mail.
C. How to save money when shopping in the mail.
D. How to spend money when shopping in the mall.
3. The best title for the passage is ______.
[ ]
A. Lights, faucets and air-conditioners
B. Spending less money
C. Energy saving at the mall
D. A hot topic