题目内容

18、       abstract, Calileo 's theory was quite difficult to understand of his time.

A Sounding       B Sounded       C To sound         D Having been sounded

试题答案

18、76．for as     77．去掉in   78．usefull useful     79．it them    80．对

81．dangerous   82．coming    83．but and   84．more convenient     85．have has