答案:对资源配置起基础性作用。
答案:对资源配置起基础性作用。
A. started at once
B. to start at once
C. to be started at once
D. at once start
解析:解析:
A. at end
B. at finish
C. at last
D. at least
A. before
B. behind
C. after
D. against
A. came
B. comes
C. has come
D. is coming
解析:解析:主句为过去时,状语从句也为过去时。
A. and
B. when she
C. she
D. that she
解析:解析:not until 直到……才
A. For
B. Any
C. Every
D. Each