—Is she your grandmother?
—Yes,________ is. [ ]
A. he
B. her
C. she
D. they
答案:C
______more information ,write to the address below.
A.To
B.On
C.From
D.For
市场上购买的钝化液可以原液常温使用,也可以1:2兑水后加热到50~60℃后使用,浸泡20~40min,至表面形成均匀致密的钝化膜为止。