下列药物属于妊娠慎用药的是（）
A.马钱子
B.天仙子
C.轻粉
D.麝香
E.桃仁
参考答案：E
It is fashionable to drive a car, but to drive a car is not nearly as difficult as it is imagined on condition that you ________ the specialized rules.
A．give up
B．stick to
C．insist on
D．connect to
第二代反病毒软件的主要特征是( )。
A．简单扫描
B．启发扫描
C．行为陷阱
D．全方位保护
