问题描述：
-Could you please tell me ( )? -Sorry,you can turn to Mr.Lee for help.
A.how long can man live without water
B.whether Yao Ming would play for Rockets or not
C.how I can keep myself safe from the flu
D.why did a serious landslide happen in Zhouqu,Gansu Province
A.how long can man live without water
B.whether Yao Ming would play for Rockets or not
C.how I can keep myself safe from the flu
D.why did a serious landslide happen in Zhouqu,Gansu Province
问题解答：
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