To proof-read these piles of documents is very time （）
A. consuming
B. spending
C. expending
D. wasting
查看答案
Julia （）two children since she got married in 1990
A. gives birth to
B. has given birth to
C. has been giving birth to
D. gave birth to
It would be difficult for anyone to behave in a（）way when one is in a furious state
A. rational
B. legal
C. stable
D. credible
When the Cultural Revolution was launched in China, his father （）college
A. attended
B. had been attending
C. was attending
D. has been attending
对于现浇板，当2m＜板的跨度≤8m时，拆模时所需混凝土强度应大于或等于设计的混凝土立方体抗压强度标准值的（）。
A. 55%
B. 65%
C. 75%
D. 85%
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