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【题目】What an unforgettable experience I'll write it down __________ it is still fresh in my memory.

A. since B. while

C. after D. until

【答案】B

【解析】句意:多么难忘的一次经历呀!我要趁它在记忆犹新的时候写下来。while引导时间状语从句,意为……时候

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