Unfortunately, any benefits gained by lowering prices never______if they are achieved by a reduction in quality.

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问题 Unfortunately, any benefits gained by lowering prices never______if they are achieved by a reduction in quality.

选项 A、last
B、pass
C、spend
D、retain

答案A

解析 句中没有谓语动词,if they are achieved by areduction in quality是条件状语从句,因此全句无宾语,横线处应填入不及物动词。(D)retain(保留)是及物动词。(B)pass(经过,通过)虽然是不及物动词,但是要后接表示场所的状语。(C)spend(消耗,花费)与句意不符。故选择(A)last(持久)。
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