问题
选择题
Kangkang is asking Mr. Lee _____ about Shenzhou VI. [ ]
A. that he will tell him something
B. when will he tell him something
C. if he will tell him something
D. to speak something
答案
答案：C
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平面与地面呈（）；拔下颌牙时，下颌牙平面与地面（）。