题目

玻璃杯被打碎后，不能利用分子间引力使其复原，这是因为(    )A.玻璃分子间引力比其他分子间引力小B.碎片间接触处呈现斥力C.碎片间接触处呈现引力，但绝大多数分子间距离太大，故总的分子引力很小D.碎片间根本不会产生分子作用力 答案：解析：玻璃打碎后不能再恢复原状不是因为分子间没有引力或存在斥力，而是因为只有极少量的分子能够接近到分子能起作用的距离，绝大多数分子因为距离很大而没有分子力作用，所以不能吸引成为一块完整的玻璃，只有C正确.答案：C用方框中所给单词的适当形式填空，使短文通顺、正确、连贯（每个单词限用一次）。   any, behave ,difference, drink ,enjoy , nice, other, real, surprise, these Once there was a teacher who took all his students for tea. What made the students    1   was that all the cups on the table were   2   . Each of them took a cup and started   3  their own tea, looking at the   4   cups. The teacher said; "Do you notice your   5  ? You are all looking at each other's tea cups and   6   of you even envy (羡慕) the   7   cups of others." Then he went on: "I put the different cups here on purpose! Life is like    8   tea. You all have the same thing in your cups— tea. However, you can't   9   enjoy it in your envy of another's cup. You forget to   10   your own life when you envy someone else's life. So now, taste your own tea! Does it matter from which cup it comes from?"