— _____________ is the library?
— It's near the post office. [ ]
A. What
B. Where
答案:B
I sometimes play volleyball ______ half an hour after school.
A.in
B.at
C.on
D.for
产品整体理论认为消费者购买某种产品时所追求的利益就是消费者所需要的( )。
A.无形产品 B.核心产品 C.附加产品 D.延伸产品