中国古代《礼记·中庸》说的八个字：“莫见乎隐，莫显乎微”的基本含意是（）
A.多读好书
B.内省
C.慎独
D.选择座右铭
参考答案：C
某天早晨气温为﹣4℃，到中午升高了6℃，晚上又降低了4℃，到午夜再降低了6℃．求午夜时的温度．
Alice was_________the letter from Tom, but it didn't reach her for some reason.
A．expecting
B．waiting
C．waiting for
D．expected
