题目

人类生存离不开空气，下列说法错误的是（ ）​ A . 空气是一种宝贵的资源 B . 空气中体积分数最大的是氮气 C . 氧气能支持燃烧、供给呼吸 D . 露天焚烧垃圾不会造成空气污染 答案：D任务型阅读。      Your arms and legs'will become weak if you do not use them for a long time. When you want to use them again, they slowly become strong again. Everybody knows that. Yet many people do not seem to know that memory works in the same way.     When someone says that he has a good memory, he really means that he keeps his memory in practice by using it. When someone else says that his memory is poor, he really means that he does not give it enough chance to become strong.     If a friend says that his arms and legs are weak, we know that it'is his own fault(过错).  But if he tells us that he has a poor memory, many of us think that his parents are to be blamed(责备) , and few of us know that it is just his own fault.     Have you ever found that some people can't read or write but usually they have better memories?This is because they cannot read or write and they have to remember things; they cannot write them down in a little notebook. They have to remember days, names, songs and stories, so their memory is the whole time being exercised. So if you want to have a good memory, learn from the people: practice remembering.1. If vou clon't use your__________ for along time, you will find it_______to use them again2. When someone savs that he has a__________memory,he really means that he keeps his memory by using lt．3. The more you use your memory, the_______________memory you will have.4．If there is someone who can't mflmory something easily, that means he does not give it_______________to becorne slrong.5. We should remember a lot of things every day to___________.