()是货币政策的首要目标。
A.经济增长
B.充分就业
C.币值稳定
D.国际收支平衡
参考答案:C
Tom is determined ______his classmates after many failures in school.
A.get away with
B.give in to
C.keep up with
D.catch up with
一般认为,要使有氧能力显著提高,应采用不超过本人50%VO2max强度的运动。 ( )