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题库 / GMATLA-CR-74
When storing Renaissance oil paintings, museums conform to standards that call for careful control of the surrounding temperature and humidity, with variations confined within narrow margins. Maintaining this environment is very costly, and recent research shows that even old oil paint is unaffected by wide fluctuations in temperature and humidity. Therefore, museums could relax their standards and save money without endangering their Renaissance oil paintings.
Which of the following is an assumption on which the argument depends?
Renaissance paintings were created in conditions involving far greater fluctuations in temperature and humidity than those permitted by current standards.
Under the current standards that museums use when storing Renaissance oil paintings, those paintings do not deteriorate at all.
Museum collections typically do not contain items that are more likely to be vulnerable to fluctuations in temperature and humidity than Renaissance oil paintings.
None of the materials in Renaissance oil paintings other than the paint are vulnerable enough to relatively wide fluctuations in temperature and humidity to cause damage to the paintings.
Most Renaissance oil paintings are stored in museums located in regions near the regions where the paintings were created.
C选项：【Museum collections】 typically do not contain items that are more likely to be vulnerable to fluctuations in temperature and humidity than Renaissance oil paintings.
注意题目说的是museums could relax their standards and save money without endangering their 【Renaissance oil paintings】.
Museum collections扩大了主体范围，而题目关心的只是Renaissance oil paintings.
D选项：None of the materials in Renaissance oil paintings other than the paint are vulnerable enough to relatively wide fluctuations in temperature and humidity to cause damage to the paintings.
（paint除了画画的动词含义外还有油漆颜料的名词含义，这里是指后者，而paiting是指一整幅画。）
题目里已经说了recent research shows that even old oil paint is unaffected by wide fluctuations in temperature and humidity. Therefore, museums could relax......
取非则会削弱，即使paint不受影响，如果其他materials受影响还是会破坏paintings！
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