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I'm taking a test and have to guess the right answer to the question after the article. Article: Mobile phone has become a problem for high schools. Some high-school students in Australia are not allowed to carry mobile phones during school hours. Mobile phone used among children has become a problem for the school. Several children have got mobile phones as Christmas presents, and more students will want them. Marry Brown, a headmaster, said that mobile phone was a distraction to students during school hours and it also gave teachers so much trouble in their classrooms. Teachers were also saying that sometimes students might use phone messages to _ during exams. She said some schools had tried to ban mobile phones. Some parents felt unhappy because they couldn't get in touch with their children. Many teachers said students should not have mobile phones at school. But there was a good reason that they could leave their phones at school offices. They also said they were easily lost and were a distraction for studies. Question: Some high schools in Australia have stopped students from carrying phones _ . Options: A: because they are students B: when they are free C: when they are at school D: because they are children
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C

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I'm taking a test and have to guess the right answer to the question after the article. Article: To protect the environment, we are on the way. Here are a few things we can do. Unwanted gifts? Give them away! Have you ever received a gift that you didn't like? Did you throw it away? If so, you can have another choice now. Two British companies hopes people will give away their unwanted gifts to them. And they will resell the gifts to raise money for the poor. In this way, the gifts can be refused and have a future life. And people can make a difference to the world. Wear the trousers that reduce pollution! A chemistry scientist and a fashion designer have created a new kind of trousers. The trousers are made of a new material which can help reduce air pollution around us. Scientists have tested the material. The result shows that it isn't harmful to human. This new kind of trousers may appear at the market in two years. Professor Ryan said, "If thousands of people wear the trousers, the air quality will be improved." Plant trees with Felix Felix Finkbeiner, a 14-year-old German boy, is not famous as a child actor but an environment hero. At the age of 9, Felix got the idea that children could do something to protect the environment. So he started a club. Felix soon got support from children all over the world. Some of them have become his good friends. The club has an aim of planting 212 million trees. They have planted over 3.5 million trees all around the world. Felix said, "The answer to controlling global warming is trees--lots of trees!" Question: The trousers mentioned in the passage _ . Options: A: have been created by a physics scientist and a fashion designer B: can help make air pollution less C: will do harm to people D: will be popular in two years
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B

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I'm taking a test and have to guess the right answer to the question after the article. Article: FOR people who are interested in space, nothing is more exciting than the idea of living on other planets. That might be why the movie The Martian (<<>> ) is so popular. It shows an astronaut struggling to live on Mars. But would it actually be possible to live on the Red Planet? While the idea of living on Mars is great, the reality does not look as good. Mars does not have a friendly atmosphere for humans. There is very little oxygen there. And because of its distance from the sun, it is also very cold. The temperature on Mars can be -62 degrees on average. This is much too cold for humans. However, scientists say it might be possible to live there even without a good atmosphere. Daytime on Mars is almost the same as Earth's. It means there's enough sunlight to grow plants inside safe buildings. However, they would have to grow in soil from Earth. Mars does not have a strong enough atmosphere to stop the radiation coming from space, which makes it dangerous to grow things in the soil. The radiation is also bad for our health. If we want to live there healthily, we need to build our homes under the ground or within the rocks on the planet. This would protect humans from the radiation and also some heat. When could we actually live on Mars? NASA is hoping to make some progress within the next 20 years. Question: It's possible to grow plants on Mars because _ . Options: A: there is enough sunlight B: the soil is good on Mars C: it has a good underground atmosphere D: its temperature changes very little
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A