问题
选择题
It is uncertain side effect the medicine will bring ?about?,although about two thousand
patients have taken it. [ ]
A. that
B. what
C. how
D. whether
答案
答案：B
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It is uncertain side effect the medicine will bring ?about?,although about two thousand
patients have taken it. [ ]
A. that
B. what
C. how
D. whether
答案：B