我们所说的()即为“义理”之学。
A.文学
B.哲学
C.政治学
D.史学
参考答案:B
可作为第二信使的物质是
A.氯B.钾C.镁D.钙
—What were you doing when the telephone rang?
—I ______ away my books and ______ to bed.
A.had just put;was going
B.was just putting;went
C.just put;had gone
D.have just put;gone