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[Critical Reasoning]
试题详情
题目：
Many industrialized nations are trying to reduce atmospheric concentrations of carbon dioxide, a gas released by the burning of fossil fuels. One proposal is to replace conventional cement, which is made with calcium carbonate, by a new “eco-cement.” This new cement, made with magnesium carbonate, absorbs large amounts of carbon dioxide when exposed to the atmosphere. Therefore, using eco-cement for new concrete building projects will significantly help reduce atmospheric concentrations of carbon dioxide.
Which of the following, if true, most strengthens the argument?
Which of the following, if true, most strengthens the argument?
选项:
A、The cost of magnesium carbonate, currently greater than the cost of calcium carbonate, probably will fall as more magnesium carbonate is used in cement manufacture.
B、Eco-cement is strengthened when absorbed carbon dioxide reacts with the cement.
C、Before the development of eco-cement, magnesium-based cement was considered too susceptible to water erosion to be of practical use.
D、The manufacture of eco-cement uses considerably less fossil fuel per unit of cement than the manufacture of conventional cement does.
E、Most building-industry groups are unaware of the development or availability of eco-cement.
答案:
D
提问：
想提问一下王文静老师，这道题我错选了B，原因是我觉得题目在问的是project用新的cement会不会降低二氧化碳的浓度，而不是在问project会不会用新的cement。感觉d选项更侧重于用不用，而b选项侧重于用了有没有效更符合题意，所以选B了。谢谢老师！
解答：
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阅读1943
提问：
我用排除法也觉得D选项最有道理，选了D。但是这道题是说Eco- cement可以吸收更多二氧化碳所以减少大气二氧化碳含量。D选项说制造商使用了更少的二氧化碳来做水泥。我感觉也不能加强题目给到的原本逻辑链。麻烦老师帮忙解答一下。
解答：
点赞1
阅读1866
提问：
想提问一下王文静老师，这道题我错选了B，原因是我觉得题目在问的是project用新的cement会不会降低二氧化碳的浓度，而不是在问project会不会用新的cement。感觉d选项更侧重于用不用，而b选项侧重于用了有没有效更符合题意，所以选B了。谢谢老师！
解答：
点赞0
阅读1944
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