题目

根据线面短文内容，在短文的空格处添上一个恰当的词，使短文完整、通顺。Lily has so many r【1】. She has to do her homework a【2】school. She can’t go out on school nights. She has to wash the dishes after dinner. Then she can watch TV f【3】an hour. She likes r【4】. She usually reads at night. She has to be in bed b【5】 ten o’clock because she has to get up e【6】the next morning. She j【7】a music club. She has to p【8】 her guitar every day. She doesn’t think she is lucky.气体的分子都在作无规则的运动，但大量分子的速率分布却有一定的规律性，如图所示．根据该图，下列说法中正确的是 （ ）A．在一定温度下，大多数分子的速率都接近某个数值，其余少数分子的速率都小于该数值B．高温状态下每个分子的速率大于低温状态下所有分子的速率C．高温状态下分子速率大小的分布范围相对较大D．高温状态下最多数分子对应的速率大于低温状态下最多数分子对应的速率