明朝时，以下哪一官职兼管对臣民的监视、侦查[ ]
A．殿阁大学士
B．锦衣卫
C．布政司
D．都司
答案：B
—How was your interview with the famous basketball player-Yao Ming?
—I was quite nervous at first, but his warm smile put me____. [ ]
A. in action
B. at ease
C. on work
D. on watch
说明微观演化和宏观演化的区别？
