Recently，a period of network video called the most beautiful blind man in Jinan picking up trash is popular on the Internet．The blind man in the network video is Bi Yukui．He picked up the rubbish and threw it into the dustbin with his wife's help and walked away slowly．Many people were moved by his behavior．

Why is the network video so popular？That is because a blind man who happened to find the rubbish can pick up．His behavior really made a lot of people feel ashamed．In the real life，we see some people throw the trash everywhere．Some people don't like walking a bit farther to put the rubbish into the dustbin．However they put it beside the road．They think it's not a big problem．

Is this really the case？They destroyed the environment．At the same time，they made the cleaners'work more difficult．Does it have nothing to do with them？No．If everyone throws rubbish like them，the city will probably become a big rubbish tip．Although dropping rubbish or picking up rubbish is a little thing in life，we can know a nation's civilization and moral cultivation from it．Every city is trying to set up a national healthy city．But some people think it is not worth doing these things like picking up the rubbish for them．In fact，this is not right．We should do some things around us．We can't throw rubbish here and there．We can't spit and smoke in public as well．

So we should learn from the blind man．It's everyone's duty to protect the environment．

51．Where did Bi Yukui come from？

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52．What did Bi Yukui do in the network video？

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53．Why is the network video so popular？

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54．If we throw the trash everywhere，who will have more difficulties？

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55．What can't we do around us according to the passage？

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