题目内容

This is the most beautiful national park_____.I have ever visited

A. which
B. where
C. that
D. what

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The environtint is everything that surrounds us: plants, animals, buildings, country, air,

A. excessively
B. distinctly
C. approximately
D. lterally

“多买少算”对商家和消费者来说，都是边际效用递减心态。()

_____

A. reality
B. treat
C. reactor
D. reaction

经济学家们发现，凡勃伦物品包含两种效用，一种是实际使用效用，另外一种是炫耀性消费效用，而后者由价格决定，价格越高，炫耀性消费效用就越高，凡勃伦物品在市场上也就越受欢迎。()