《执业药师资格制度暂行规定》规定,执业药师注册证有效期满前3个月,持证者须到注册机构办理()
A.变更注册
B.再次注册手续
C.注销注册
D.变更注册手续
E.再次注册
参考答案:B
It is believed ______ children should learn to be responsible from the very beginning.
A.why
B.how
C.when
D.that
中国绘画就题材而言,产生最早的是()画。
A.人物
B.山水
C.花鸟
D.翎毛