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3. Economies in which a high percentage of resources are invested in research and development show greater growth in the long run than do those in which resources are channeled into consumption. Japanese workers spend a higher percentage of their income investing in research and development than do American workers. To grow as fast as Japan has in the past three decades, the United States must change the tax code in order to encourage savings and investment and discourage debt. Which of the following, if true, tends to weaken the argument? (A) Japanese research is more focused on consumers than is research by American firms. (B) Class mobility, highly valued in American culture, is encouraged by a growing rather than a stagnant economy. (C) Studies have shown that countries with high consumption rates prosper in the short run. (D) Proposed changes to the tax code could involve strict limits on the deductability of interest, and increased allowance for research. (E) Because a decreasing percentage of the United States is under 40, an age when savings are traditionally low, the savings rate will increase without changes to the tax code.
答案：E。原题说资源被更多的用于投资R&D要比资源被引入消费渠道更有利于长期经济。因为日本工人们比美国工人们将更高比例的收入用于投资R&D，所以美国要想在经济发展速度上赶上日本，要改变税法刺激储蓄投资抑制负债。 我认为A可以削弱啊，我理解的是A说日本的R&D更多是研究消费者的，那就是说日本的用于投资R&D的资源也是被引入消费渠道了，这样就起到了削弱作用。E选项我没看懂～请高手赐教！ | 
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发表于 2009-7-9 05:02:00
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