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[Critical Reasoning]
试题详情
题目：
Offshore oil-drilling operations entail an unavoidable risk of an oil spill, but importing oil on tankers presently entails an even greater such risk per barrel of oil. Therefore, if we are to reduce the risk of an oil spill without curtailing our use of oil, we must invest more in offshore operations and import less oil on tankers.
Which of the following, if true, most seriously weakens the argument above?
选项:
A、Tankers can easily be redesigned so that their use entails less risk of an oil spill.
B、Oil spills caused by tankers have generally been more serious than those caused by offshore operations.
C、The impact of offshore operations on the environment can be controlled by careful management.
D、Offshore operations usually damage the ocean floor, but tankers rarely cause such damage.
E、Importing oil on tankers is currently less expensive than drilling for it offshore.
答案:
A
提问：
题目的最后一句话给出结论：在Offshore多投钱，tanker少进口油。问削弱？我选了D，认为指出在offshore那么做的缺点。答案A我反而觉得无关。设计那个tanker感觉文章也没有讨论过这个点。求解。谢谢
解答：
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提问：
求问～为什么不能选d呢 是因为usually和rarely吗
解答：
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提问：
题目的最后一句话给出结论：在Offshore多投钱，tanker少进口油。问削弱？我选了D，认为指出在offshore那么做的缺点。答案A我反而觉得无关。设计那个tanker感觉文章也没有讨论过这个点。求解。谢谢
解答：
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