|
我们来讨论下原命题的逆否命题是否是正确的。。。 下面2个都是选了2），我觉得按理说逆否不是应该对等的吗，这类的题目在考试的时候肯定没时间判断呢否了吧，怎么排出
1，题干：如果存在细菌，盐会阻碍微波炉杀菌-->poisoning （选项里都涉及到了微波炉的作用，太长我拿掉了） 1)the addition of salt increase the danger of poisoning 2)the danger of poisoning can be less if salt is not use to prepare food
2,题干，企业Q若要不破产（A），要提高生产率。（B） 生产率若提高10%，必然提高20% 1）Q will not go bankerupt if it achieve a productivity improved by 20% 2) if 20% productivity is unattainable, Q will go bankerupt
选项都是2）
是事实上1导致了例外的可能性，比如（1），也许这个食物没有感染细菌，有盐存在也无所谓。2因为说企业要不破产必须要提高产量但是提高产量还是有可能破产的，所以2的（1）也有例外
？ 这种题目考试怎么判断啊
107. Because of
the recent transformation of the market, Quore, Inc., must increase the next
two years, or it will certainly go bankrupt. In fact, however, Quore’s
production structure is such that if a 10 percent productivity increase is
possible, then a 20 percent increase is attainable. If the
statements above are true, which one of the following must on the basis of them
also be true? A.
It is only Quore’s production
structure that makes it possible for Quore to survive the transformation of the
market. B.
Quore will not go bankrupt if
it achieves a productivity increase of 20 percent over the next two years. C.
If the market had not been transformed,
Quore would have required no productivity increase in order to avoid
bankruptcy. D.
Because of the transformation
of the market, Quore will achieve a productivity increase of 10 percent over
the next two years. E.
If a 20 percent productivity
increase is unattainable for Quore, then it must go bankrupt.
E 93. The
efficiency of microwave ovens in destroying the harmful bacteria frequently
found in common foods is diminished by the presence of salt in the food being
cooked. When heated in a microwave oven, the interior of unsalted food reaches
temperatures high enough to kill bacteria that cause food poisoning, but the
interior of salted food does not. Scientists theorize that salt effectively
blocks the microwaves from heating the interior. Which one of the
following conclusions is most supported by the information above? A.
The kinds of bacteria that
cause food poisoning are more likely to be found on the exterior of food than
in the interior of food. B.
The incidence of serious food
poisoning would be significantly reduced if microwave ovens were not used by
consumers to cook or reheat food. C.
The addition of salt to food that has been
cooked or reheated in a microwave oven can increase the danger of food
poisoning. D.
The danger of food poisoning
can be lessened if salt is not used to prepare foods that are to be cooked in a
microwave oven. E.
Salt is the primary cause of
food poisoning resulting from food that is heated in microwave ovens.aten by rodents but not by
other animals. D | 
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2009-7-30 23:45:00
楼主