—Did you remember to give Marry the money you owed her? —Yes, I gave it to her _______ I saw her. A. while B. the moment C. suddenly D. once 答案:B 解析: 此题考查the moment作连词的用法,相当于as soon as 的用法。根据句意,只能选B,while所引导的状语从句中的谓语动词要用延续性的动词。
长江中上游防护林所起的生态作用主要是
[ ]
A.
涵养水源、保持水土
B.
繁衍物种、保护生物多样性
C.
调节气候、稳定大气成分
D.
净化空气、吸烟除尘