求解两道逻辑。。

熊的传人

Outbreaks of Rift Valley fever occur irregularly in East Africa
, several years apart.When outbreaks do occur, they kill thousands of cattle.A livestock vaccine against the disease exists but is rarely used.It is too expensive for farmers to use routinely, and since it is not effective until a month after vaccination, administering it after an outbreak begins helps very little.Nevertheless, experts predict that use of the vaccine will increase significantly within the next few years.
Which of the following, if true, provides the strongest justification for the experts’ prediction?

A. Rift Valley fever is spread by mosquitoes, but each outbreak is so widespread that it is impractical to control it by using insecticides.

B. When an outbreak of Rift Valley fever occurs, unaffected countries often refuse to import livestock from the countries affected by the outbreak.

C. It would take less than a month for producers of the vaccine to adjust their production operations to cope with a large increase in demand.

D. Many cattle farmers in East Africa are nomadic or live in remote villages, and such farmers, who have little access to modern veterinary medicine, are particularly hard hit by outbreaks of Rift Valley fever.

E. Recently published research has shown that certain identifiable climatic conditions are almost invariably followed, within two to five months, by an outbreak of Rift Valley fever.
选E 我也选的E 但是是排除的 ~~完全不知道 an outbreak of Rift Valley fever.发生后持续几个月的可观测到的天气和题目有什么关系？？？
Which of the following most logically completes the argument below?
According to promotional material published by the city of Springfield, more tourists stay in hotels in Springfield than stay in the neighboring city of Harristown.  A brochure from the largest hotel in Harristown claims that more tourists stay in that hotel than stay in the Royal Arms Hotel in Springfield.  If both of these sources are accurate, however, the “Report on Tourism” for the region must be in error in stating that _____.
A. the average length of stay is longer at the largest hotel in Harristown than it is at the Royal Arms Hotel
B. there is only one hotel in Harristown that is larger than the Royal Arms Hotel
C. more tourists stay in hotels in Harristown than stay in the Royal Arms Hotel
D. the Royal Arms Hotel is the largest hotel in Springfield
E. the Royal Arms Hotel is the only hotel in Springfield
这个题也选E  更不知所云了。。。。。。整个不知道 e有什么关系。。。。  求好心人解答。。

riverwind91

第一题：E的意思是：climatic conditions...followed...by outbreak of fever, within 2~5 month 就是说某种可监测的天气之后2～5个月必然爆发fever，而疫苗接种后一个月生效，完全可以赶得上。
第二题：题是有点怪，很容易被绕进去。以下哪项肯定不对：
A：stay lenght, irrelevant, might be right
B：not enough information, might be right
C:  must be right
D:  not mentioned, might be right
E:  must be in error，因为显然springfield的酒店不止是Royal Arms，否则springfield的总住店人数怎么会比Harristown的总数还多？

熊的传人

第一题：E的意思是：climatic conditions...followed...by outbreak of fever, within 2~5 month 就是说某种可监测的天气之后2～5个月必然爆发fever，而疫苗接种后一个月生效，完全可以赶得上。
第二题：题是有点怪，很容易被绕进去。以下哪项肯定不对：
A：stay lenght, irrelevant, might be right
B：not enough information, might be right
C:  must be right
D:  not mentioned, might be right
E:  must be in error，因为显然springfield的酒店不止是Royal Arms，否则springfield的总住店人数怎么会比Harristown的总数还多？

-- by 会员 riverwind91 (2013/3/6 18:03:35)

谢谢。。。听完后觉得好简单~当时是脑袋傻了么。。。

yzhxiao1989

但是原文最后强调的是in the next few years,就算是E选项所说是对的，那也只是证明在接下来的几个月里疫苗接种会大量使用，仍得不出疫苗会在接下来几年中得到大量使用。而选项D也存在一些逻辑漏洞（虽然它强调了现阶段许多牧民不使用疫苗的客观原因），所以这个题我很纠结。

Shinrey

估计大家没有看懂？ 其实好简单的。
说RVF变得可以预测，而原来farmer不用这种vaccine是因为生效时间要一个月，等到RVF爆发了再来打针，再过一个月才有药效。那么真是没啥意义了。可是现在通过天气可以预测RVF，这样就可以提前打针，vaccine就变得有意义，人们就会增加Vaccine啦～

Shinrey

第二题，
Harrison的最大酒店宣传资料说，Harrison最大的酒店比Springfield的RAH酒店的人数多
而springfield说本区域的游客入住比Harrison要多。
那么说明一个事情，就是springfield其他酒店的客人，比Harrison其他酒店的客人要多。

旅游报告说RAH是S唯一的酒店，显然就错了啦～

李睿

感觉此题就是纸老虎 关键是要明确问题到底想问什么

iamtwo

A. Rift Valley fever is spread by mosquitoes, but each outbreak is so widespread that it is impractical to control it by using insecticides. 【RVF由蚊子传播，用杀虫剂来控制不现实，与原文无关，反正都控制不了，那接种疫苗会增多的逻辑没有补充】

B. When an outbreak of Rift Valley fever occurs, unaffected countries often refuse to import livestock from the countries affected by the outbreak. 【当RVF爆发的时候，没有被影响的国际会拒绝进口感染了RVF的国家的牲口。原文没有说牲畜出口是当地农民的主要经济来源，无关，排除】

C. It would take less than a month for producers of the vaccine to adjust their production operations to cope with a large increase in demand. 【疫苗制造商可以花少于一个月的时间去调整他们的operation来应对需求的增长，原文没啥一定会增长只是个预测，跟供需无关，排除】

D. Many cattle farmers in East Africa are nomadic or live in remote villages, and such farmers, who have little access to modern veterinary medicine, are particularly hard hit by outbreaks of Rift Valley fever. 【许多放牛的农民是游牧，他们没法接触到这些现代医疗……balabala 无关 原文的关键点是，明明注射后一个月后才会生效的疫苗，却依然被预言会大卖，要来补这个gap】

E. 正确

克瑞斯

yzhxiao1989 发表于 2013-9-18 16:56
但是原文最后强调的是in the next few years,就算是E选项所说是对的，那也只是证明在接下来的几个月里疫苗 ...

刚开始我和你一样看错了，within two to five months修饰是followed，是说有什么样的天气情况之后的几个月之内必然会有爆发 Rift Valley feve；不是说几个月之内会爆发Rift Valley feve。

招拆猫猫拳

Shinrey 发表于 2013-10-20 16:57
第二题，
Harrison的最大酒店宣传资料说，Harrison最大的酒店比Springfield的RAH酒店的人数多
而springfie ...

同意！