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求助GWD一道语法和一道逻辑题!

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发表于 2012-7-14 21:24:20 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
语法:
1. Unlike most other mergers in the utility industry, which have been driven by the need to save money and extend companies' service areas, the merger of the nation's leading gas *and electric company is intended to create a huge marketing network for the utilities in question with states opening*  their utility markets to competition.

A. and electric company is intended to create a huge marketing networkfor the utilities in question with states opening
B. and electric companies are intended to create a huge network for marketing the utilities in question as states open
C. and electric companies are intended to create a huge network that will be marketing the utilities in question, with
D. company and electric company are intending to create a huge marketing network for the utilities in question, with
E. company and leading electric company is intended to create a huge network for marketing the utilities in question as states open

答案是E
请问B为什么错了。。。

逻辑:
1. Fact: Asthma, a bronchial condition, is much less common ailment than hay fever, an allergic inflammation of the nasal passages.
   Fact: over 95 percent of people who have asthma also suffer from hay fever.
   If the information given as facts above is true, which of the following must also be true?
A. Hay fever is prerequisite for the development of asthma
B. Asthma is a prerequisite for the development of hay fever
C. Those who have neither hay fever nor ashma comprise less than 5 percent of the total population
D. The number of people who have both of these ailments is greater than the number of people who have onlyone of them
E. The percertage of people suffering from hay fever who also have asthma is lower than 95 percent

E, 为什么是E啊?
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沙发
发表于 2012-7-14 21:42:11 | 只看该作者
Hi,

The first thing you need to look at is subject verb agreement.  The subject of the sentence is merger = singular subject and requires a singular verb is - You can cross off BCD.

Then look at the parallel marker and between nation's leading gas and electric company. It is comparing two different things, 1) gas to electric company. This should be comparing same things such as company with another company- E is correct.
板凳
发表于 2012-7-15 11:37:04 | 只看该作者
第一题语法记得看句子的主语是the merger,所以必然谓语动词是单数,因此可以排除BCD。AE的区别,你可以仔细读一下the nation's leading gas and electric company和the nation's leading gas and leading electric company,前者有歧义,指一家公司,后者可以指两家公司。而且A里面的a huge marketing network和E中的a huge network for marketing意思是不同的,GMAT当中名词前面有多个形容词修饰的要当心。从句意上来看,E正确。

第二题逻辑你可以画个图来解,这个很象数学题。一个圆圈代表ASTHMA,一个圆圈代表HAY FEVER。两个圆圈当中的交集就是95%的asthma,asthma的圆圈要小于hay fever的圆圈,因为is much less common ailment than hay fever,也就是说它没有hay fever生病的人数多。由图可以得知~~E是对的,因为交集部分是95%的asthma,hay fever又比asthma人数多,所以hay fever当中得asthma的比例肯定低于95%
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