(·山东济宁模拟)It is by no means clear the president can do something to end the strike.A.

问题补充：

(·山东济宁模拟)It is by no means clear the president can do something to end the strike.

A. whether

B. which

C. that

D. what

答案：

(答案→)A. whether

B. which

C. that

D. what

解析：A考查主语从句。句意：一点也不清楚那位总统是否能采取措施来结束罢工。该从句不缺少任何成分，故排除B、D两项；根据题干中“by no means clear”可知设空处表示“是否”，故答案为A项。本题易误选D项，考生没注意到“the president can do something to end the strike”中的something，如将something去掉，则答案为D项。