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5. The ratio of divorces to marriages has increased since 1940. Therefore, there must be a greater proportion of children living with only one natual parent than there was in 1940.
which of the following, if true, most strongly weakens the inference drawn above?
E. the proportion of children who must be raised by one parent because the other has died has decreased since 1940 as a result of medical advances.
A B C D 都很好排除。但为什么我觉得E选项不是weaken啊。。。总觉得把E中的decreased改成increased才是weaken.....我脑子短路了,求帮助 |
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