— How much are they?
—Sorry, they're not _____ sale. [ ]
A. in
B. on
C. for
答案:C
下丘脑性闭经常见的原因是()
A.垂体肿瘤
B.卵巢功能早衰
C.子宫内膜炎
D.甲状腺功能亢进
E.精神、神经因素
用SQL语句实现将“职工”表中所有职工的奖金提高5%: UPDATE职工______奖金=奖金*1.05