选择题:(4). From the passage we can draw the conclusion t

题目内容:
(4). From the passage we can draw the conclusion that _________. ( )(本题3.0分)
A、 couples who look alike can live longer
B、 most partners have been proved to grow alike
C、 the influence between partners can be quite strong
D、 happily-married couples are often richer than others
参考答案:

(单选题2分)机会成本是指()。(A)作出某项选择时实际支付的费用或损失(B)企业生产与经营中的各种

(单选题2分)机会成本是指()。(A)作出某项选择时实际支付的费用或损失(B)企业生产与经营中的各种实际支出(C)作出一项选择时所放弃的其他若干种可

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