** OG13—67 题目Several industries have recently switched at least partly from older technologies powered by fossil fuels to new technologies powered by electricity. It is thus evident that less fossil fuel is being used as a result of the operations of these industries than would have been used if these industries had retained their older technologies.
Which of the following, if true, most strengthens the argument above? (A) Many of the industries that have switched at least partly to the new technologies have increased their output. (B) Less fossil fuel was used to manufacture the machinery employed in the new technologies than was originally used to manufacture the machinery employed in the older technologies. (C) More electricity is used by those industries that have switched at least partly to the new technologies than by those industries that have not switched. (D) Some of the industries that have switched at least partly to the new technologies still use primarily technologies that are powered by fossil fuels. (E) The amount of fossil fuel used to generate the electricity needed to power the new technologies is less than the amount that would have been used to power the older technologies. 用电去提供动力用的原油比用老技术提供动力的用的原油要少 疑问：为什么B选项错误。
**OG13--83题目Many people suffer an allergic reaction to certain sulfites, including those that are commonly added to wine as preservatives. However, since there are several winemakers who add sulfites to none of the wines they produce, people who would like to drink wine but are allergic to sulfites can drink wines produced by these winemakers without risking an allergic reaction to sulfites.
Which of the following is an assumption on which the argument depends? (A) These winemakers have been able to duplicate the preservative effect produced by adding sulfites by means that do not involve adding any potentially allergenic substances to their wine. (B) Not all forms of sulfite are equally likely to produce the allergic reaction. (C) Wine is the only beverage to which sulfites are commonly added. (D) Apart from sulfites, there are no substances commonly present in wine that give rise to an allergic reaction. (E) Sulfites are not naturally present in the wines produced by these winemakers in amounts large enough to produce an allergic reaction in someone who drinks these wines. 上述厂商制造的酒里没有自然存在的硫酸盐，就算自然存在也没有多到可以引起过敏的地步，也就是说，只要不加，里面就没有。取非就是上述厂商制造的酒里面有自然存在的硫酸盐，还是多到可以引起过敏的程度，会削弱题目的结论。 疑问：其中D选项取非之后说明还有其他物质可以引起过敏反应，削弱了文章么？为什么不能选。
**Businesses are suffering because of a lack of money available for development loans. To help businesses, the government plans to modify the income-tax structure in order to induce individual taxpayers to put a larger portion of their incomes into retirement savings accounts, because as more money is deposited in such accounts, more money becomes available to borrowers.
Which of the following, if true, raises the most serious doubt regarding the effectiveness of the government’s plan to increase the amount of money available for development loans for businesses? (A) When levels of personal retirement savings increase, consumer borrowing always increases correspondingly.当个人退休储蓄增加，消费者借贷也相应增加 (B) The increased tax revenue the government would receive as a result of business expansion would not offset the loss in revenue from personal income taxes during the first year of the plan. (C) Even with tax incentives, some people will choose not to increase their levels of retirement savings. (D) Bankers generally will not continue to lend money to businesses whose prospective earnings are insufficient to meet their loan repayment schedules. (E) The modified tax structure would give all taxpayers, regardless of their incomes, the same tax savings for a given increase in their retirement savings.
疑问：这是一道手段目的题。修改法律—>把钱放到退休储蓄中->增加借贷 。要使手段不成立，要么没有把钱放到退休储蓄中，要么即使放进去了，钱也不会增加。当个人退休储蓄增加，消费者借贷也相应增加。为什么C选项错误？ | 
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发表于 2013-10-28 18:24:48
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