题干

A survey was carried out on the death rate of those who were infected by Ebola Virus, __________were frightening.
A.of that resultsB.of which results
C.the results of thatD.the results of which
上一题 下一题 0.64难度 单项选择 更新时间:2014-12-17 07:17:47

答案(点此获取答案解析)