请教一题GWD

cxks01 · 发表于 2011-11-13 13:14:29

From 1980 to 1989, total consumption of fish in the country of Jurania increased by 4.5 percent, and total consumption of poultry products there increased by 9.0 percent.During the same period, the population of Jurania increased by 6 percent, in part due to immigration to Jurania from other countries in the region.

If the statements above are true, which of the following must also be true on the basis of them?

During the 1980’s in Jurania, profits of wholesale distributors of poultry products increased at a greater rate than did profits of wholesale distributors of fish.

For people who immigrated to Jurania during the 1980’s, fish was less likely to be a major part of their diet than was poultry.

In 1989 Juranians consumed twice as much poultry as fish.

For a significant proportion of Jurania’s population, both fish and poultry products were a regular part of their diet during the 1980’s.

Per capita consumption of fish in Jurania was lower in 1989 than in 1980.

我觉得B\D好像都对，可以答案是E，完全不明白！求教！

Yolanda416 · 发表于 2011-11-13 13:51:07

答案E是正确的，我的理解是当人数增加，鱼的consumption减少，　平均每人consumption of fish自然减少（分子变小，分母变大）。B不正确，因为鱼消费需求的减少未必是移民造成的也可能是别的生原因，比如污染啊什么，所以不能说明移民不喜欢吃鱼。E不正确是因为有可能肉销量是８０%，那个才是真正的regular　part　of　diet，单单的４.５%和９%说明不了什么问题

请教一题GWD

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