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Think about how you use artificial (人造的) light every day. In the morning, a light on your clock shows the time. When you use your computer, television, and a phone, their screens light up. Traffic lights tell you w 1. to stop and go when you drive. You turn on lights in your car and in your house at night. These are just some of the w2. you use artificial light. Now think a 3. living without artificial light. How different would your life be?

In the past, people use fire for light at night. Then from 3,000 BC, people started using candles. After that lamps (灯) were i 4., people used oil and gas to light the lamps. Finally, in 1879, Thomas Edison invented a safe and easy way to use the electric light bulb (电灯泡). His invention c5.our world.

Before the light bulb, it was so d6. at night that people could not do much work. Electric light changed that. Business grew. People could do more at night and they could do things during the day more e7.. If you look at a picture of our planet from space at night, you can see how the light bulb changed life on Earth.

We depend on electric light from energy sources (来源) like oil, gas, or coal. But those energy sources c8.pollution. One answer to this problem is to use a c9.source of energy, for example, solar power (太阳能). Scientists have found a way to catch the energy of the sun’s light and save i10. to use later. So now the sun can light our homes at night.

In Binjiang Street, I had this amazing experience. While I was waiting for the bus, I saw a beggar (乞丐) carrying a sign which said that he ___ a cup of hot coffee.

As soon as I read it. I knew it was time for me to do ___ for him. I ran across the street ___, thinking that getting him a cup of hot coffee would be great. I went to Starbucks (星巴克) nearby and asked the young lady behind the counter (柜台) to give me a cup of ___. I then walked back to the street corner where the man had stayed. As I went up to ___, I found that the closer I got, the more joy (快乐) in his eyes I could see.

When I handed him the hot coffee, I just said, “This is for you, my dear.” I could see so much joy in his face and even a ___ was running down. He kept thanking me and holding his coffee ___ the biggest treasure and prize in his life. It made me cry that a simple action can bring so much joy and make someone feel really warm.

I walked back to the bus stop happily. When the bus driver opened the door and I wanted to ___ the bus fee (费用). To my surprise, he waved me through and said, “Honey, you don’t need to pay.” He explained that it ___ his heart to see that I gave away (赠送) free coffee.

This amazing moment was the ____ in my heart and it gave my day and my life a new start. It brings me such a joy to simply love and bless.

1.A. would like B. like C. want D. need

2.A. anything B. something C. thing D. nothing

3.A. loudly B. sadly C. hardly D. quickly

4.A. juice B. tea C. coffee D. orange

5.A. he B. him C. his D. himself

6.A. tear B. rain C. water D. time

7.A. for B. with C. like D. in

8.A. spend B. pay C. take D. cost

9.A. waved B. beat C. hit D. touched

10.A. warm B. warmer C. warmest D. most warm

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