我国最大的沙漠是塔克拉马干沙漠。_爱下问搜题

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我国最大的沙漠是塔克拉马干沙漠。

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If Mickey Mouse slips (滑倒)on a banana skin on TV, viewers laugh. But for ordinary people, falling is not 36 . For e

xample, if you   37 over a stone or fall off your bike, you have to take days to get well. For   38 people, the result of a fall could be worse.
Scientists at the University of Pittsburgh, USA, wanted to know why some people are   39 likely to fall than others.
The researchers found that   40 means more than planting your feet on the ground and standing tall. Your brain   41 your sense of balance with information from your eyes and inner ears and the   42 from your feet and legs. If something goes wrong with any of these, you’re   43  to fall. People   44 to fall more often as they grow older because their senses are slower.
State of mind is important too. The research shows that when people know they’re walking on a slippery surface, they   45 their pace and walk with flatter feet. As a result, they fall less often.
“We actually   46 people slip and fall,” researcher Mark Redfern said. People of different ages fall on   47 in his lab. Cameras   48 their falls and a computer analyzes the information. Scientists then can   49 people who fall often how to be more watchful.
“If they get   50 to a lifelike but controlled environment, people can   51 learn to handle the   52 thing,” Redfern said.
Falls happen to everyone sometimes.   53 you see someone fall, think about why and offer a helping   54 . This person’s painful experience may   55 you from falling at the same place.

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