题目内容

某商品为低档品,其需求的收入弹性()是()

A. Em>l
B. Em=0
C. Em
D. Em>0

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需求量的变动表现为()

A. 整个需求曲线移动
B. 需求曲线斜率变大
C. 沿同一条需求曲线上下移动
D. 以上都不对

some people have birthday cakes ________noodles.

A. instead
B. instead for
C. instead to
D. instead of

is he ________ his girlfriend was once a thief?

A. aware of
B. aware that
C. knowing that
D. aware of that

1. we should ________ a good study habit of taking notes in class.

A. develop
B. improve
C. make
D. remain

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