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[Critical Reasoning]
试题详情
题目：
From 1978 to 1988, beverage containers accounted for a steadily decreasing percentage of the total weight of household garbage in the United States. The increasingly widespread practice of recycling aluminum and glass was responsible for most of this decline. However, although aluminum recycling was more widely practiced in this period than glass recycling, it was found that the weight of glass bottles in household garbage declined by a greater percentage than the weight of aluminum cans.
Which of the following, if true of the United States in the period 1978 to 1988, most helps to account for the finding?
选项:
A、Glass bottles are significantly heavier than aluminum cans of comparable size.
B、Recycled aluminum cans were almost all beverage containers, but a significant fraction of the recycled glass bottles had contained products other than beverages.
C、Manufacturers replaced many glass bottles, but few aluminum cans, with plastic containers.
D、The total weight of glass bottles purchased by households increased at a slightly faster rate than the total weight of aluminum cans.
E、In many areas, glass bottles had to be sorted by color of the glass before being recycled, whereas aluminum cans required no sorting.
答案:
C
提问：
C长得像无关选项。
解答：
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阅读5618
提问：
選的a 請金老師回答一下 謝謝
解答：
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提问：
请教Tina老师，我这题可以理解C，但不知道为什么A不对。前文说回收铝比回收玻璃更普遍，但是重量的减少铝却比玻璃少。A选项说相同大小（控制变量）的玻璃瓶比铝重，因此虽然铝比玻璃回收多，但由于其比玻璃轻，因此会产生两者在重量减少上的不一致（加强了文章结论的可能性）。希望老师解答，谢谢！
解答：
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提问：
A:单位glass更重，即使回收的数量少于铝的，也有可能总重量会重。
这个思路哪里错了呢？是错在那个comparable size吗？这里觉得好乱啊
解答：
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提问：
C长得像无关选项。
解答：
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提问：
已有录音仍然不能解惑！请英老师帮忙，谢谢！
A、C不会比。
思路如下：问题问哪个选项可以帮助说明那个发现。A提到了重量，虽然后面是相当size的比较；C只是说用什么材料替代，而文中最后说发现了重量比例的差距，所以认为C无关。因此选A.
解答：
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提问：
cr
解答：
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