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.

admin2012-03-02  17
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、efficient
D、potential
答案A
解析 形容词辨析。powerful 意为“强大的，有力的”，如：a powerful drug(特效药)；influential意为“有影响的，有势力的”，如：influential politicians (有势力的政客)；efficient意为“效率高的”，如：an efficient secretary (能干的秘书)；potential意为“潜在的”，如：a potential problem(潜在的问题)。根据题意可知，应选A)，
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大学英语四级

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