【单选题】
Our research has focused on a drug which is so ______ as to be able to change brain chemistry.
A.influential
B.powerful
C.monstrous
D.rigorous
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根据网考网移动考试中心的统计,该试题:
36%的考友选择了A选项
60%的考友选择了B选项
0%的考友选择了C选项
4%的考友选择了D选项