Apples are______in summer and cost a lot.

Apples are______in summer and cost a lot.
A、rare
B、scarce
C、common
D、unusual
【正确答案】：B
【题目解析】：rare 罕见的；scarce 稀缺的；common 常见的；unusual 不寻常的句意：夏天苹果很稀少，价格很高。