题目内容:
What can we learn from the WTC collapse?
A.Although the structure of the two buildings was very strong, the death toll was still very shockin B.The structure of the two buildings was of the first clas ♂∮
C.The structure of the two buildings was not so strong as people had expecte
D.The structure of the two buildings was strong enough to withstand any accident
参考答案:
答案解析: