题目

Over a hundred children ______ parents were killed in the Wenchuan earthquake have been adopted and taken good care of by kind??hearted couples. A．whoB．thatC．whoseD．which 答案：C 解析: 先行词是children，从句中parents前缺少定语，故用whose引导定语从句。句意：父母在汶川地震中丧生的100多个孩子已经被好心的夫妇收养和照顾。如果题干改为：Over a hundred children of ______ the parents were killed in the Wenchuan earthquake have been adopted and taken good care of by kind??hearted couples，那么空格处只能填whom宇航员在太空与飞船内的对话必须借助电子通信设备才能进行，而在飞船舱内却可以直接对话其原因是（ ）A.太空中噪声太大B.太空中是真空，不能传声C.用通信设备对话更方便D.声音只能在地面附近传播