Write a multi-choice question for the following article, with the given choices and answer: Article: Scientists tell us so much about the moon, it is quite easy to tell what it is like. It's certainly not a friendly place. As there is no air or water, there can be no life of any kind. Mile after mile there are only plains of dust with mountains around them above, the sun and the stars shine in the sky. If you _ the mountains' shadows it will mean moving from terrible cold into great heat. The moon is also a very silent world, for sound waves can only travel through air. But from the moon, you can see a friendly sight. Our earth is shining more brightly than the other stars. It looks like a very large ball, coloured blue and green and brown. Options: A there is no life there B there is no air there C there is no green tree there D there is no water there Answer: B there is no air there Question:
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Answer: The Moon is a silent world because _ .

Write a multi-choice question for the following article, with the given choices and answer: Article: As we all know, people couldn't live without water. Some parts of our bodies are made of water. We depend on clean water to live every day. However, we human beings are polluting water seriously. In some areas of China, people are still in great need of clean water. Dirty water is one of the world's biggest healthy problems. It's harmful to our health. When water from the rain and melting snow runs through roads, it picks up some dangerous chemicals and other things along the way. Many of the rivers are short of protections, so they are easy to be polluted by factories or animals' waste. World Water Day has grown to become one of the important dates since 1993. In 2013, World Water Day shares the topic of Water Cooperation. If everyone tries their best to save and protect the clean water, our living conditions will be much better. ,. Options: A schools B factories or animals' waste C fish D human beings' waste Answer: B factories or animals' waste Question:
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Answer: Many of the rivers are easy to be polluted by _ .

Write a multi-choice question for the following article, with the given choices and answer: Article: News 1 Yuan Longping, the father of hybrid rice, won the World Food Prize on Monday. Yuan developed the world's first popular and widely known hybrid rice. Hybrid rice plants can make more rice than regular ones. News 2 Have you ever got angry at books that are full of mistakes? Don't worry, things will get better soon. Last week, China started checking textbooks, dictionaries and children's books all over the country. The government said the results of the check would come out at the end of June. News 3 People will see a new "star" in the sky soon. China plants to send a satellite into space by December 2006.It will stay in space for one year. It will go around the moon and take pictures. It must be very expensive, right? That's for sure; 1.4 billion yuan! News 4 Have you ever thought of being able to fly around the world in a few hours? One day, maybe you can. Last Saturday, the American X-43A airplane made its first flight. It reached a speed of 8,000 kilometers per hour. This makes it the fastest plane in the world.X-43A is only three to four meters long, but it's very heavy. It weighs 1,270 kilograms. Options: A 1.4 kilometers per second B 43 kilometers per minute C 1,270 kilometers per hour D 8,000 kilometers per hour Answer: D 8,000 kilometers per hour Question:
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Answer:
The speed of the fastest plane in the world is _ .