题目

如图为人体肺泡处气体交换示意图，血液从A处经肺泡周围流向B处后将会（ ） A . 保持含氧较少的静脉血成分，不发生变化 B . 由含氧较多的动脉血变化为含氧较少的静脉血 C . 由含氧较少的静脉血变化为含氧较多的动脉血 D . 由含氧较多的静脉血变化为含氧较少的动脉血 答案：C缺词填空根据短文内容和首字母提示，在下文空格处填入适当的词使短文完整。（每空一词）Nowdays there are many ways to learn and enjoy ourselves. But why do many people still do some r 【1】 every day?Firstly, it is f___【2】____ to read books. You can always k___【3】____ yourself happy if you like reading. This is especially useful when the weather is bad. It is a relaxing h____【4】__ too. You can really become lost in a book.Next, you can read a book almost a__【5】_____, in a car, in a waiting room, on a plane, in bed ----even in the bath. A_____【6】__ you need is a book! Reading is a convenient(方便的) hobby as it is easy to s____【7】___ and then start again.Another good r___【8】____ for reading books is that it is useful. If you read as a hobby you will get better and better at it. This means that you will read faster and will become better at u____【9】___ what you read. As your reading improves, you will find your school work becomes much e__【10】___. Many school subjects depend on good reading and as you read, you learn more and more.