反垄断政策手段的实施,通常是以( )手段实现的。
A.行政 B.法律 C.经济 D.技术
参考答案:B
婴儿最早发展的动作是头部动作,其次是脚的动作,最后是躯干动作。 ( )
Happily for the boy's parents, he is working harder and harder to________ his lost time.[ ]
A. make up for
B. catch up with
C. make use of
D. keep up with