Last year, I went to a summer camp in the United States with my classmates. It was my first time to go abroad.

    I lived with a host family in Los Angeles for five days. My host family was friendly and gave me lots of advice. For example, they said I should say "excuse me" if I have to interrupt (打断) someone or ask for directions.

    I also took some classes. They were different from the classes I had had back home. In the US, each class is like a seminar. Students join groups, speaking freely and creating a cheerful atmosphere (氛围). I had to work hard to learn more vocabularies, so I could better communicate with my international classmates. I used to pay little attention to my word usage (使用), but now I pay more attention.

    During my visit, I also went to some famous universities in Boston, New York and Washington, D. C. We learned about the history behind the universities. At MIT (麻省理工学院), we saw lots of names on a wall in the hall. The tour guide told us they were the names of students who had lost their lives during wars. I was inspired (鼓舞) by the fact that they fought for their country.

    Boyan Slat has one huge goal. It's a goal that could be good for people and a {#blank#}1{#/blank#} all over the world. Amazingly, it looks like he's going to m {#blank#}2{#/blank#}his goal.

    When he was 16  Dutch engineering student Slat was on vacation in Greece, and he started to think about all the rubbish that is p{#blank#}3{#/blank#} onto beaches by water. The oceans around the world are all of plastic—millions of tons of plastic. Unfortunately, plastic doesn't just disappear. It takes c{#blank#}4{#/blank#} to break down (分解).

    The p{#blank#}5{#/blank#} situation of the oceans is bad and worrying and Slat wanted to do something to change it. So he made it a personal goal to clean up the rubbish in the world's oceans.

    Slat started with an idea for an unusual m{#blank#}6{#/blank#} to "catch" the plastic floating (漂浮) in the water using the natural energy of the ocean. He left school in 2013 to begin work on his project The Ocean Cleanup. Soon, the project r{#blank#}7{#/blank#} a lot of attention.

    A year later, he was leading a team of 100 scientists and engineers working on the invention. Slat needed money for this, so he started asking people to d{#blank#}8{#/blank#} to his project online and raised over $ 2 million!

    Soon after, Slat was named a "Champion of the Earth" by the United Nations for his meaningful and v{#blank#}9{#/blank#} work. It's the most important title the UN gives to people helping the environment. The Ocean Cleanup also won several awards (奖项) for having one of the best inventions of 2015. But the d{#blank#}10{#/blank#} goes on for Slat. He hopes that the oceans will be free of plastic in about twenty or thirty years.

Ray was thought to be a strange boy. One day when he was flying his kite, he said to himself," Did anybody ever try to fly a kite at night? I think it must be very fun. But the kite can't be seen in the dark. What if I tie a light to it? That would be really good. I {#blank#}1{#/blank#}(try) it tonight."

As soon as it was dark, he {#blank#}2{#/blank#}(take) his kite and lantern, and went to a large field about a mile from his home. He tied the lantern to the tail of his kite. The lantern {#blank#}3{#/blank#}(make) of paper. The kite flew higher and higher. He tied the string (线)to a tree, and then he stood there, staring at his kite. It floated (飘) high up into the air. How wonderful! While Ray {#blank#}4{#/blank#}(enjoy) his special kite, some people in the village also saw it.

"Look! A light{#blank#}5{#/blank#} (fly) in the sky," one person said. "It can't be a light," said a man.

"Perhaps it's a big firefly (萤火虫) ,"said another,

"Maybe it's a comet (彗星),"said another man.

"How strange!" said a boy.

"Let's find out what this strange light{#blank#}6{#/blank#} (be)," the last one said. Then they went to the field.

Ray, who had gotten tired of standing, was sitting behind a tree. He{#blank#}7{#/blank#} (see) the men as they came, but they didn't see him. When they reached under the light, and saw what it was, they looked at each other and said, "There is nothing unusual {#blank#}8{#/blank#}(happen)! This is just a trick of some naughty boys, but it {#blank#}9{#/blank#} (fool) us all.

Let's keep the secret. "Then they laughed and went back to the village. When the men had gone, Ray thought it was time for him {#blank#}10{#/blank#}(go), so he went home, too. When his mother heard what he had done, she hardly knew whether to laugh or scold (责备), but just told him to go to bed.

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