2. 外语
  3. Our research has focused on a drug which is so______as to be able to change brain chemistry.

Our research has focused on a drug which is so______as to be able to change brain chemistry.

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问题 Our research has focused on a drug which is so______as to be able to change brain chemistry.
选项 A、powerful
B、influential
C、multiple
D、energetic
答案A
解析 powerful“有力的”，它可以指人或政党等权势很大的，还可指机器的功率大以及药品的药力大等；influential“有影响的；有势力的”，一般用来形容能够产生影响或有强大势力的人或事物；multiple“复合的}多样的”，如：a man of multiple interests“有多方面兴趣的人”；energetic“精神饱满的；精力充沛的”，一般用来形容人充满生机和活力。所以只有powerful才能用来形容drug。
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