Would you like------- apple pie?A.a B.an C a pair of D.a piece of
问题描述：
Would you like------- apple pie?A.a B.an C a pair of D.a piece of
答
D.
Would you like---a piece of---- apple pie?你要一块苹果馅饼么?
a piece of 是“一块/片……”,用作不可数名词的有量词的表达需要时,就要用到!