用打气筒将空气压入自行车胎内，主要是因为

【名词&注释】

主要原因(main cause)、打气筒(hand air pump)、星期天、没有人(nobody)

[单选题]用打气筒将空气压入自行车胎内，主要是因为

A. 气体分子很小
B. 气体分子间距离较大
C. 气体分子可分
D. 气体分子在不断运动

查看答案&解析查看所有试题

学习资料：

[单选题]24． Nobody is in classroom because________ ．

A. it’s Sunday
B. Mary gets to the classroom so early
C. it's 7：30 now
D. the students are playing outside

[单选题]29． Why do people like teleshopping?

A. Because they like watching TV．
B. Because they can do some shopping at home，
C. Because they like the heavy traffic．
D. Because they think the things on TV are good．

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