PREP上三道不懂题目求救！～～！

meesh · 发表于 2013-8-15 14:18:51

求救！这三题都不太懂。。第一二题不懂题目的逻辑链及正确答案也不理解。。第三题感觉根本就没怎么看懂题。。求各位大神帮助！！谢谢！～

拧发条喵 · 发表于 2013-8-15 14:28:45

搜了一下文字版看得清楚一点0 0
79. (32057-!-item-!-188;#058&006758)

The country of Baurisia has, until now, been self-sufficient in both grain and meat. However, with growing prosperity in Baurisia has come a steadily increasing per capita consumption of meat, and it takes several pounds of grain to produce one pound of meat. Therefore, since per capita income in Baurisia is almost certain to rise further but increases in domestic grain production are highly unlikely, Baurisia is soon likely to become an importer of grain.
Which of the following, if true, most seriously weakens the argument?
B国现在肉和粮食都自给自足。
但是，由于经济增长，肉的人均消费量增加了。+ 要花掉N单位粮食才能生产1单位肉 + B国的人均收入水平增加 + 国内粮食产量不增加
→B国粮食不能自给自足了，得进口才行
A. When people increase their consumption of meat, they also tend to increase their consumption of grain.
B. The per capita consumption of meat in Baurisia is roughly the same across all income levels.
C. Per capita consumption of meat has not increased substantially in recent years in those countries from which Baurisia is likely to import meat.
D. It is more economical for Baurisians to import meat than grain.
没人说一定要进口粮食然后再自己生产肉类，直接进口肉类不就好了吗……所以 √
E. During Baurisia's years of growing prosperity, the country's population has remained relatively stable.

拧发条喵 · 发表于 2013-8-15 14:34:08

111. (28490-!-item-!-188;#058&002974) (T-9-Q2)

Kernland imposes a high tariff on the export of unprocessed cashew nuts in order to ensure that the nuts are sold to domestic processing plants. If the tariff were lifted and unprocessed cashews were sold at world market prices, more farmers could profit by growing cashews. However, since all the processing plants are in urban areas, removing the tariff would seriously hamper the government’s effort to reduce urban unemployment over the next five years.
K国为了确保腰果卖给本国的加工厂商，对未经加工的腰果实行了高出口关税。
如果没有关税，腰果流入国际市场，更多的农民就会从种植腰果中受益。
但是，既然腰果加工都发生在城市里，所以，取消关税会使城市的就业率下降。
Which of the following, if true, most seriously weakens the argument?
A. Some of the by-products of processing cashews are used for manufacturing paints and plastics.
B. Other countries in which cashews are processed subsidize their processing plants.
C. More people in Kernland are engaged in farming cashews than in processing them.
D. Buying unprocessed cashews at lower than world market prices enables cashew processors in Kernland to sell processed nuts at competitive prices.
E. A lack of profitable crops is driving an increasing number of small farmers in Kernland off their land and into the cities.
但是如果不取消关税，种腰果就不赚钱了，伤害了农民的利益，农民就可能进城务工，变成城市失业者，这样城市的失业率更加提高了啊。
其他选项都无关。

拧发条喵 · 发表于 2013-8-15 14:39:21

Lyme disease is caused by a bacterium transmitted to humans by deer ticks. Generally, deer ticks pick up the bacterium while in the larval stage by feeding on infected white-footed mice. However, certain other species on which the larvae feed do not harbor the bacterium. If the population of these other species were increased, more of the larvae would be feeding on uninfected hosts, so the number of ticks acquiring the bacterium would likely decline.
L病是由小虫D携带细菌传染给人类的。
一般情况下，小虫D还在幼虫的时候吃了受感染的白老鼠才携带细菌的。
但小虫D吃的其他东西并没有那个细菌。
如果小虫D吃的其他东西增加了，幼虫们就会吃干净的东西多一点，所以携带细菌的小虫D就会减少
Which of the following would it be most important to ascertain in evaluating the argument?
A. Whether populations of the other species on which deer tick larvae feed are found only in areas also inhabited by white-footed mice
B. Whether the size of the deer tick population is currently limited by the availability of animals for the tick's larval stage to feed on
小虫D的数量是否取决于它幼虫食物的数量。
如果是取决于，那么食物增加多少，它吃多少，题干结论不成立
如果不取决于，也就是说现在食物已经够多了它爱吃什么吃什么，干净食物的百分比增加，它得病的概率也下降，题干结论成立。
C. Whether the infected deer tick population could be controlled by increasing the number of animals that prey on white-footed mice
D. Whether deer ticks that were not infected as larvae can become infected as adults by feeding on deer on which infected deer ticks have fed
E. Whether the other species on which deer tick larvae feed harbor any other bacteria that ticks transmit to humans

meesh · 发表于 2013-8-16 10:04:12

拧发条喵发表于 2013-8-15 14:39
Lyme disease is caused by a bacterium transmitted to humans by deer ticks. Generally, deer ticks pi ...

谢谢楼上！！～我仍旧对第2题不太理解。。题目结论是“ removing the tariff would seriously hamper the government’s effort to reduce urban unemployment over the next five years.” 意思是：取消关税后会严重阻碍政府想要降低城市失业率的想法。那岂不就是城市失业率可能不会下降吗？然后问题是削弱，也就是找城市失业率可能会下降的原因，那选e我就不理解了。。盼答复！～

拧发条喵 · 发表于 2013-8-16 10:34:57

meesh 发表于 2013-8-16 10:04
谢谢楼上！！～我仍旧对第2题不太理解。。题目结论是“ removing the tariff would seriously hamper th ...

题干说取消关税会对城市就业造成负面影响。
削弱：不取消关税更会对城市就业造成负面影响。

PS其实主要不是找原因什么的，是找关税这项政策和城市就业率的关系

meesh · 发表于 2013-8-16 15:36:35

拧发条喵发表于 2013-8-16 10:34
题干说取消关税会对城市就业造成负面影响。
削弱：不取消关税更会对城市就业造成负面影响。

诶楼上说得有道理～～谢谢！：）

meesh · 发表于 2013-8-16 22:59:48

拧发条喵发表于 2013-8-16 10:34
题干说取消关税会对城市就业造成负面影响。
削弱：不取消关税更会对城市就业造成负面影响。

亲有道题实在不太懂。。还想请问下你～

1. (24179-!-item-!-188;#058&000705)

Although fullerenes--spherical molecules made entirely of carbon--were first found in the laboratory, they have since been found in nature, formed in fissures of the rare mineral shungite. Since laboratory synthesis of fullerenes requires distinctive conditions of temperature and pressure, this discovery should give geologists a test case for evaluating hypotheses about the state of the Earth's crust at the time these naturally occurring fullerenes were formed.

Which of the following, if true, most seriously undermines the argument?

(A) Confirming that the shungite genuinely contained fullerenes took careful experimentation.
(B) Some fullerenes have also been found on the remains of a small meteorite that collided with a spacecraft.
(C) The mineral shungite itself contains large amounts of carbon, from which the fullerenes apparently formed.
(D) The naturally occurring fullerenes are arranged in a previously unknown crystalline structure.
(E) Shungite itself is formed only under distinctive conditions.
这题选d。。我当时用排除法错选了e。。感觉不知道该怎么想。。求助！谢谢！～

拧发条喵 · 发表于 2013-8-16 23:12:41

Although fullerenes--spherical molecules made entirely of carbon--were first found in the laboratory, they have since been found in nature, formed in fissures of the rare mineral shungite. Since laboratory synthesis of fullerenes requires distinctive conditions of temperature and pressure, this discovery should give geologists a test case for evaluating hypotheses about the state of the Earth's crust at the time these naturally occurring fullerenes were formed.
F物质最初是在实验室里发现的，但后来在自然界的某石头S的缝隙里也发现了F物质。
因为在实验室合成F物质需要特殊的温度和压力，所以能以此来推断自然界当年形成F物质的地质状况。
Which of the following, if true, most seriously undermines the argument?

(A) Confirming that the shungite genuinely contained fullerenes took careful experimentation.
(B) Some fullerenes have also been found on the remains of a small meteorite that collided with a spacecraft.
(C) The mineral shungite itself contains large amounts of carbon, from which the fullerenes apparently formed.
(D) The naturally occurring fullerenes are arranged in a previously unknown crystalline structure.
自然形成的F物质是以一种特殊的晶状结构排列的。削弱。
说明了自然形成的和人工合成的不一样，不能乱套用
(E) Shungite itself is formed only under distinctive conditions.
S石头本身形成也需要特殊条件。无关也算加强。因为既然S石头本身都可以用来研究地质活动了，那何必扯上F物质/那F物质更加可以用来研究地质活动。

meesh · 发表于 2013-8-17 09:56:23

拧发条喵发表于 2013-8-16 23:12
Although fullerenes--spherical molecules made entirely of carbon--were first found in the laboratory ...

谢谢楼上！！～

PREP上三道不懂题目求救！～～！

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