【題目】The hero said he didn’t think twice ____ diving into the freezing river to rescue that child.

A. before B. after C. until D. when

【答案】A

【解析】句意：這位英雄說他沒有三思跳進冰凍的河里去救那個孩子not …before 為固定搭配，not...until...著重的是結(jié)果，not...before...著重的是過程，not before 不早于，not until 直到……才。

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