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 1980s 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 1980s, 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 1980s.

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

考题讲解

情景:

推理:通过问题问法可知,本题不是要我们去评估推理文段。因此,本题为必然性推理

选题方式:

选项分析:

A选项:在80年代的Jurania,家禽批发商获得的利润上涨了更多的比例相对于鱼肉批发商的利润。销量高不代表利润高,原文没有提到过利润。

B选项:对于80是年代移民到Jurania的人来说,鱼比家禽更不可能成为他们的主要的食材。当移民之后,我们能看到的是消耗量的变化,但是并不代表原有居民的口味就是不变的,所以鱼上涨的没有家禽快不等于移民的人都喜欢吃家禽。

C选项:1989年Jurania的人吃的家禽量是吃鱼量的两倍。80到89年这段时间的增长率差值是两倍,和总共消耗的数量是两个概念。

D选项:
对于大部分的Jurania的人来说,鱼和家禽都是他们在80年代的主要食材。该信息原文完全没有涉及到过。原文一直在说的都是他们增长的情况,完全无法得出是否是主要食材这个概念。

E选项:
Correct. 人均消耗的鱼的数量1989年比1980年要低。因为鱼的消耗量增长了4.5%,而人口增加了6%,所以平均每个人消耗鱼的数量肯定是要下降的。(如果鱼的消耗量也增长6%,则可以不变)

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Prep2008E1-CR

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