3. Our research has focused on a drug which is so _____ as to be able to change brain chemistry.
A. powerful B. influential C. monstrous D. vigorous
[答案] A. powerful
[注释] powerful (=having or producing great power) 强有力的。在这里四个形容词中, 只有powerful (有效力的) 可与表示药物的名词搭配。influential 有影响的, 有势力的, monstrous 异常大的, vigorous 精力旺盛的, 强健有力的。
4. The lost car of the Lees was found _____ in the woods off the highway.
A. vanished B. abandoned C. scattered D. rejected
[答案] B. abandoned
[注释] abandoned (=give up completely) 放弃, 抛弃; 1) The scientist abandoned his research for lack of fund. 2) The sailors abandoned the burning ship
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