俗话说“没有规矩，不能成方圆”这句话体现的道德规范要求是( )。
A．爱国守法
B．明礼诚信
C．团结友善
D．敬业奉献
参考答案：A
—Excuse me, could you spare me some time?
—Sorry, I ______ a lecture in the hall in a few minutes.
A．have given
B．will have given
C．am giving
D．will be giving
孕妇、乳母镁的适宜摄入量（AI）为（）。
A.100mg／d
B.350mg／d
C.400mg／d
D.500mg／d
E.1000mg／d
