企业原材料最低储备定额等于
A．经常储备最高限度
B．经常储备最低限度
C．保险储备
D．季节性储备
参考答案：C
I can think of many cases _____ students obviously knew a lot of English words and expressions but couldn’t write a good essay.
A．why
B．which
C．as
D．where
