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　　Many children love to play with snow in winter．But Long Chuan has come to hate it．

　　This year his hometown suffered from snowstorms(遭受暴风雪)for nearly a month．The heavy snow stopped cars and trains, broke the electricity(电)tower and turned tap water to ice．

　　Every day Long Chuan had to walk several kilometers to carry drinking water．“I couldn’t ride a bike and it took me 3 hours to walk to school．I can’t remember how many times I slipped(滑倒)on the hard ice,”said Long Chuan．

　　Long is not alone．This year millions of people in central and southern China had a freezing winter without enough water and electricity．The biggest snowstorms in 50 years killed more than 100 people．They also cost the country 111.1 billion yuan．

　　Experts(专家)say a special type of climate condition(气候条件), La Nina, caused the storms．During a La Nina, the water in the Pacific Ocean(太平洋)near the equator(赤道)becomes colder than usual．It changes the weather around the world．

　　Besides China, Canada, the US and Middle Eastern countries also met with heavy snowstorms this winter．The special climate caused the recent flooding(洪水)in Australia, too．

　　However, experts say that people have destroyed the environment(环境)．Global warming(全球变暖)may be causing these terrible weather events to happen more and more often．

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根据短文内容选择最佳答案。

　　Many children love to play with snow in winter．But Long Chuan has come to hate it．

　　This year his hometown suffered from snowstorms(遭受暴风雪)for nearly a month．The heavy snow stopped cars and trains, broke the electricity(电)tower and turned tap water to ice．

　　Every day Long Chuan had to walk several kilometers to carry drinking water．“I couldn't ride a bike and it took me 3 hours to walk to school．I can't remember how many times I slipped(滑倒)on the hard ice,”said Long Chuan．

　　Long is not alone．This year millions of people in central and southern China had a freezing winter without enough water and electricity．The biggest snowstorms in 50 years killed more than 100 people．They also cost the country 111.1 billion yuan．

　　Experts(专家)say a special type of climate condition(气候条件), La Nina, caused the storms．During a La Nina, the water in the Pacific Ocean(太平洋)near the equator(赤道)becomes colder than usual．It changes the weather around the world．

　　Besides China, Canada, the US and Middle Eastern countries also met with heavy snowstorms this winter．The special climate caused the recent flooding(洪水)in Australia, too．

　　However, experts say that people have destroyed the environment(环境)．Global warming(全球变暖)may be causing these terrible weather events to happen more and more often．

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阅读材料，然后从各小题所给的四个选项中选出最佳选项。

　　Wang Changqing, of Fengxian country, Jiangsu Province, has lost his 11-year-old daughter, Lulu, forever．He still has trouble accepting the fact．

　　On the afternoon of December 12, Lulu, with more than 40 schoolmates, got on the school bus after school as usual．But several minutes later, the bus fell into a ditch(沟渠)．Twelve students lost their lives that day, including Lulu．

　　Traffic accidents are the No．1 killer of middle school and primary school students．There are about 285, 000 school buses in China but only 10 percent meet a set of technical standards(技术标准)．Last month, the Chinese Ministry of Education gave an order：school and kindergartens across the country should carry out safety checks on school buses．

　　On December 15, Huang Ming, the vice minister of the Ministry of Public Security, said that school buses should have Priority on the roads．They can also use the road which buses run．“We'll punish drivers on school buses with no licenses and those overloading children, ” Huang added．

　　Local governments have also tried to improve school buses．The buses have GPS technology and can carry 50 students．In Taizhou, Jiangsu, school buses now have a monitoring system(监控系统)．Once a school bus is overloaded, it will send an alarm．

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