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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(遭受暴風(fēng)雪)for nearly a month．The heavy snow stopped cars and trains, broke the electricity(電)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(專家)say a special type of climate condition(氣候條件), 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(環(huán)境)．Global warming(全球變暖)may be causing these terrible weather events to happen more and more often．

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　　Everyone tries to get to school on time．But when bad weather gives you trouble, can you still make it before the bell rings?

　　In northern China during spring, big sandstorms often make trouble for students and everyone else．

　　‘When we had a sandstorm last week, I had to get up half an hour earlier so I wouldn't be late for school,’said Xing Wei, a Junior 1 boy at Yaohua Middle School in Tianjin．

　　Xing usually gets up at about seven and needs 20 minutes to get to school．But on sandstorm day, he needs 40 minutes．When the sky is dark with sand, buses and cars all move much more slowly．Sometimes, people can't even see for 200 metres．

　　Sandstorms usually happen in spring．This year, sandstorms started in late Match．They have happened in more than 10 provinces in northern China this year．More than 70 million people have had problems in those places because of the storms．

　　People in southern China don't have to worry about this kind of bad weather．Most of the sand comes from Gansu and Inner Mongolia．In northern China, lots of places have few trees and don't get much rain．People there have been cutting down too many trees．When there aren't many trees, the ground can't keep enough water．Over the years, the ground becomes looser．Strong winds take the loose sand into the sky．

　　Sandstorms are bad for people's health．If people breathe too much sand, they could cough or have asthma(哮喘)．

　　Sandstorms also give farmers lots of problems．Sometimes their sheep get lost in the storms and never get back home．The winds also tear farmers' houses down．

　　What can you do to stop sandstorms? Here's an idea：Ask your parents to help you plant some trees this spring．

　　If you see people cutting down too many trees, tell them about the danger of sandstorm, and ask your government to stop them from cutting．

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