题目

短文填空 请用适当的词完成下面的短文，每个空只能填写一个形式正确、意义相符的单词。     Tony, Daming, Lingling and Betty are classmates and they go to the same __1__ every day. Tony lives the __2__from the school, so he has the longest journey. He goes __3__ bus. Daming goes on the bicycle so he has __4__ fastest journey. However, it is the __5__ dangerous way. Lingling __6__ to school because she lives the closest to the school. __7__ about Betty? She often goes by subway but sometimes she takes the __8__. She doesn’t like the train because it先化简，(3xx-1-xx+1)•x2-1x，再取一个你喜欢的数代入求值．