问题
填空题
对流层是大气的最底层。平均高度（）。
答案
参考答案：11km
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对流层是大气的最底层。平均高度（）。
参考答案：11km
| 完形填空。 | |||
| Some children want to be writers some day. They want to write 1 for people to read. That sounds 2 ! It's good to write something for people to read! 3 they don't know that they need to be good 4 first before they become good writers because reading books 5 helpful for them to become good writers. They should read 6 books instead of (代替) watching TV or spending a lot of time 7 games when they are free. There is much fun in reading If you are a good reader you will have fun 8 books. If you decide to be a good writer, you'd better say to 9 , "I'm going to do my best to read 10 books!" Maybe this is a good way you can become a good writer. | |||
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