FEIFEI 第58 61题 跪谢啊跪谢~~~~

Lambton

61. Investigators concluded that human failure was not responsible for the fatal airplane crash last August, and since that time new and more stringent rules for identifying and reporting mechanical problems have been in effect. That accounts for the fact that reports of airplane mechanical problems have increased in frequency by 50 percent since last August.

Which one of the following is an assumption underlying the argument in the passage?

A.    Airplane travel is still relatively safe, despite the increase in reported mechanical problems.
B.    Mechanical problems in airplanes have increased dramatically since last August.
C.    Mechanical problems in airplanes have not increased by 50 percent since last August.
D.    Airlines are less reluctant to report mechanical problems than they previously were.
E.    Mechanical problems in airplanes have become easier to detect since last August.

C 为什么啊？？？

58. Some people say that the scarcity of food is a function of the finite limits of the earth’s resources, coupled with a relentless rate of population growth. This analysis fails to recognize, however, that much of the world’s agricultural resources are used to feed livestock instead of people. In the United States, for example, almost one-half of the agricultural acreage is devoted to crops fed to livestock. A steer reduces twenty-one pounds of inexpensive grain to one pound of expensive meat. Thus, the scarcity of food is not merely a function of limited resources and population growth.

Which one of the following is an assumption that would allow the conclusion in the argument to be properly drawn?

A.    eople prefer eating meat to eating grain.
B.    Meat is twenty-one times more expensive than grain.
C.    The limits of the earth’s agricultural resources are not finite.
D.    More than one-half of the agricultural acreage in the United States is devoted to drops fed to humans.
E.    Growing crops for human consumption on the acreage currently devoted to crops for livestock will yield more food for more people.

E 这题完全不明白啊 @@

Lambton

食物短缺原因：资源有限+人口增长。这种观点不对，因为大部分土地资源用来种饲料。廉价的草要21吨才能换1吨肉。因此，食物短缺还有别的原因，即 喂动物。
问假设

E.    Growing crops for human consumption on the acreage currently devoted to crops for livestock will yield more food for more people.
现在用来种饲料的土地，如果用来种粮食，给人类提供更多的食物

就是说，如果不种饲料，只种粮食，人类的食物很充足，根本不会出现资源短缺！
问题时，一部分土地用来种饲料了，粮食就不够了，资源就短缺了。说明动物必须是资源短缺的原因之一。

-- by 会员 aomeisoft7 (2010/9/21 19:27:32)

可把你累坏了吧 嘿嘿 不好意思啊 我觉悟比较低~    太谢谢你了！！这下明白了~~~~

aomeisoft7

食物短缺原因：资源有限+人口增长。这种观点不对，因为大部分土地资源用来种饲料。廉价的草要21吨才能换1吨肉。因此，食物短缺还有别的原因，即 喂动物。
问假设

E.    Growing crops for human consumption on the acreage currently devoted to crops for livestock will yield more food for more people.
现在用来种饲料的土地，如果用来种粮食，给人类提供更多的食物

就是说，如果不种饲料，只种粮食，人类的食物很充足，根本不会出现资源短缺！
问题时，一部分土地用来种饲料了，粮食就不够了，资源就短缺了。说明动物必须是资源短缺的原因之一。

Lambton

恕我愚笨 58题还是不明白啊~！！！ 能不能再细细地给我讲讲~  非常抱歉啊~~ 但是真的谢谢了！！

aomeisoft7

however, that much of the world’s agricultural resources are used to feed livestock instead of people
说明这些喂给动物的粮食比重很大，动物饲料这个function必须考虑在里面
E取非的话，被动物吃掉的粮食，不能够喂很多人，就说明饲料因素不占很大比重，可以不考虑

judydongxueni

第一道题，report增加了但是实际的故障并没有增加那么多，说明只是由于上报的标准更严格了而已