________ is better than to receive. [ ]
A. To give
B. Give
C. Have given
答案：A
两个质数的乘积一定是合数．______．
具有疏肝解郁，宁心安神功效的药物是（）具有养阴益血，宁心安神功效的药物是（）具有潜阳镇肝，宁心安神功效的药物是（）
A.石菖蒲
B.远志
C.龙骨
D.酸枣仁
E.合欢皮
. Give
. Give