阅读下面的短文，然后根据短文内容，在每小题所给的四个选项中选出最佳选项。

　　Martin had just finished high school．He would go to college at the far end of the city．He didn't want to live there, and he didn't want to take the bus either．So his father agreed to buy him a car．

　　His father spent all his summer teaching him how to drive, from the ABC to the XYZ．Thinking of the great feeling of driving a new car, Martin learned very quickly, and received his driver's license(驾照)just before his eighteenth birthday．

　　The second day, all the family, and their dog, went to a car shop．Martin spent almost all the morning going from one car to another．Finally he saw a red Blue Bird．He had a testing drive on the open ground, and called out, “This is what I want, Dad! ” When everything was done, they were ready to leave．

　　Martin climbed into the front seat．He said excitedly, “It's my first day driving alone．Dad, Mom, and Poo! Enjoy it! ”

　　His dad immediately took the back seat, right behind the new driver．Martin wondered why his father chose that seat, for his father always enjoyed looking in front．

　　So he said, smiling, “I'm sure you’re back there to have a change after all those weeks of sitting in the front seat teaching me how to drive．”

　　“No, ” Dad replied, “Do you remember what you did to me all those years when I took you to and from school? I am sitting here to hit and kick the back of your seat all the way! ”

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　　John Glenn will always be remembered as the first American to orbit(绕……轨道而行)the earth．On February 20, 1962, a year after Yuri Gagarin's epic first orbit in the Vostok I spaceship, Glenn made three orbits in Friendship 7．When he returned to America after splashing down in the Atlantic Ocean, he was welcomed like a hero．

　　In 1964 Glenn resigned(辞职)from the space programme to go into politics．In 1974 he was elected(选举)to the US Senate(参议院)for the state of Ohio．He won re-election to the Senate in l 980 and again six years later．

　　In 1998 Cam John Glenn had his most amazing adventure(冒险的经历)．At the age of 77 he became the oldest astronaut when he went into space as a member of the team of the space shuttle(航天飞机)Discovery．His trip was supposed to investigate(调查)the effects(影响)of space on older people．But even Glenn said that the scientific part of the trip was not as important as going into space for a second time．“It's just such a wonderful experience to be in space again,”he said．

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　　Where does the wind come from? What makes the wind move all the time? Scientists tell us that it is the sun．That makes air move, and makes it blow．When the sun shines on the earth, it makes the earth hot．Then the earth makes the air hot．When the air becomes hotter, it also becomes lighter．The light air goes up．Cool air comes in to take the place of(代替) the hot air．The hot light air goes up higher and higher until it becomes cool．Then it comes down again, and then the earth makes it hot again, and it has to go up．When the air moves, we have wind．

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　　First it was an earthquake．Then came a terrible tsunami．These natural disasters killed thousands of people in Japan on Mar．11, 2011．Then a nuclear crisis(核危机)put the island in danger and shocked the world．

　　Damaged by the earthquake and tsunami, Fukushima Daiichi nuclear plant(福岛第一核电站)has put out dangerous radioactive(放射性的)materials．Experts from several countries are working to control the crisis．

　　Although the reports say the leak so far will not cause huge health problems, people are worrying about nuclear safety．Switzerland has stopped plans to build new nuclear plants．Germany raised questions about its nuclear future．

　　As for China, the government has suspended approving(暂停审批)new nuclear power stations and stepped up safety checks at existing plants, Xinhua reported．But it is reported that all nuclear power stations in China are safe．

　　A nuclear power plant creates electricity．It is a clean energy source．In 1954, the world's first nuclear power plant was built in Russia．From then on, nuclear power has been widely used．

　　But nuclear power plants have hidden problems．If radioactive materials get into the air or water, they can pollute soil and plants and harm humans and animals．Nuclear accidents, such as the Chernobyl(切尔诺贝利)disaster in 1986 in the Ukraine, have caused great damage to the nearby people and the environment．

　　Will there be another choice for energy that we can use in the future? In recent years, scientists have found ways to make electricity from sunshine, wind and garbage．

　　Some scientists say hydrogen(氢气)may be used to create power．Hydrogen is a clean resource to use, and will never disappear．Some car companies have already developed cars powered by hydrogen．But still, the technology for its production is only in early stages of development．

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