当消费者收入增加时，会减少对()的需求。
A.正常商品
B.炫耀性物品
C.高档商品
D.低档商品
参考答案：D
解析：参见教材P84
填上搭配恰当的词语。
( )的心情 ( )的笑颜 ( )的感情
( )地看 ( )地走 ( )地点头
Mr smith has little acquaintance_____ modern poetry while he has a wide knowledge ___ painting.When it comes____music,he has a talent _____it.
A．with; of ; to; for
B．of; about; to; of
C．with; about; at; of
D．of; of; to; for
