我和Sisi的讨论帖

GMAT_onjob

72.        (30176-!-item-!-188;#058&005083)

A study followed a group of teenagers who had never smoked and tracked whether they took up smoking and how their mental health changed.  After one year, the incidence of depression among those who had taken up smoking was four times as high as it was among those who had not.  Since nicotine in cigarettes changes brain chemistry, perhaps thereby affecting mood, it is likely that smoking contributes to depression in teenagers.

Which of the following, if true, most strengthens the argument?

A. Participants who were depressed at the start of the study were no more likely to be smokers after one year than those who were not depressed.

B. The study did not distinguish between participants who smoked only occasionally and those who were heavy smokers.

C. Few, if any, of the participants in the study were friends or relatives of other participants.

D. Some participants entered and emerged from a period of depression within the year of the study.

E. The researchers did not track use of alcohol by the teenagers.

大家什么思路呢

[此贴子已经被作者于2009/9/28 21:16:47编辑过]

GMAT_onjob

第二道:

74.        (28254-!-item-!-188;#058&002906)

 

Comcorp Shipping Clerk:  Last week, no shipments of building supplies were sent out on Friday.  The five specially ordered shipments sent out last week were sent out on Thursday, and each of those specially ordered shipments consisted entirely of building supplies.  Four shipments were sent to Truax Construction last week, none of which consisted of building supplies.

If the shipping clerk’s statements are true, which of the following must also be true?

A. All of Comcorp’s shipments of building supplies last week were specially ordered.

B. None of Comcorp’s shipments sent on Friday of last week was sent to Truax Construction.

C. None of the shipments sent by Comcorp to Truax Construction last week was specially ordered.

D. None of Comcorp’s shipments sent on Thursday of last week was sent to Truax Construction.

E. All of Comcorp’s shipments of building supplies last week were sent out on Thursday.

GMAT_onjob

77.        (30553-!-item-!-188;#058&005527)

 

Citizens of Parktown are worried by the increased frequency of serious crimes committed by local teenagers.  In response, the city government has instituted a series of measures designed to keep teenagers at home in the late evening.  Even if the measures succeed in keeping teenagers at home, however, they are unlikely to affect the problem that concerns citizens, since most crimes committed by local teenagers take place between 3 p.m. and 6 p.m.

Which of the following, if true, most substantially weakens the argument?

A. Similar measures adopted in other places have failed to reduce the number of teenagers on the streets in the late evening.

B. The crimes committed by teenagers in the afternoon are mostly small thefts and inconsequential vandalism.

C. Teenagers are much less likely to commit serious crimes when they are at home than when they are not at home.

D. Any decrease in the need for police patrols in the late evening would not mean that there could be more intensive patrolling in the afternoon.

E. The schools in Parktown have introduced a number of after-school programs that will be available to teenagers until 6 p.m. on weekday afternoons.

BC why not C

GMAT_onjob

来个语法题目：

168.      (29192-!-item-!-188;#058&003526)         (GWD-18-Q18)

 

The first shots of the American Revolution, fired at Lexington and Concord, Massachusetts, were, according to legend, heard around the world, but news of these shots, which were sent by swift messenger, took four days in reaching New York City as well as another additional eleven days to reach Charleston, South Carolina.

A. shots, which were sent by swift messenger, took four days in reaching New York City as well as another additional eleven days

B. shots that was sent by swift messenger took four days in order to reach New York City, and also another eleven days

C. shots that were sent by swift messenger took four days to reach New York City and another eleven days

D. shots took four days by swift messenger in order to reach New York City and another eleven days in addition

E. shots took four days by swift messenger to reach New York City and another eleven days

 

其实就是CE之间选择了，C最然用定语从句会有歧义，但是E感觉翻译不顺畅呢

melodyflying

第一题

由 depression among those who had taken up smoking →smoking contributes to depression

这里

有个推导过程有个weakness就是depression and somking 这两个现象是同时存在 我们并不能definitely说是谁导致了谁

要是题设版本的结论strength 就要在添加条件说明不是本身存在depression导致了smoking 

纵观选项 A

melodyflying

第二题

A 和题设aganist    只可得出all of the five specially ordered shipments consisted entirely of building supplies 但不能反过来说

B 题设明确说no shipments of building supplies were sent out on Friday 

C all of the specially ordered shipments consisted entirely of building supplies

 none of the shipments sent by Comcorp to Truax Construction  consisted of building supplies.

所以其不包含在specially ordered shipment 里面

D 题设只说那5个specially ordered shipment里面没有C的shipment 并没有提及Thursday还发了什么别的东西没用 不能一棍子打死

E 题设只是说Friday没有发货 介绍了thursday 并未提及其他时间

[此贴子已经被作者于2009/9/30 16:04:43编辑过]

melodyflying

第三题

关键注意the problem that concerns citizens is serious crimes

题设most crimes committed by local teenagers take place between 3 p.m. and 6 p.m.→keep teenagers at home in the late evening 不能达到减少serious crimes的目的

这里有个assumption是 发生 在 下午3点到6点的most crimes =serious crimes

因此如果哪个选项指出这个assumption是不成立的 就可以weaken到题设结论

因此B

对于C 如果大多数serious crimes 都发生在不keep home的下午 这个measure再怎么降低犯罪率也只是减少了serious crimes的一小部分 大部分都在下午照样发生

因而还是不能有效解决问题

GMAT_onjob

谢谢啦。

在来个

Q18.       p2-cr      28.   (30615-!-item-!-188;#058&005660)

 

Hutonian Government Official:  Federal law requires truck drivers to take a long break after driving for ten hours, but truck drivers frequently do not comply.  Since the public rest areas along our highways cannot accommodate all the drivers needing a break, we plan to build more rest areas to increase the rate of compliance.

 

Hutonian Business Representative:  But if the parking lots around our businesses are considered, there are more than enough parking places.

 

Which of the following, if true about Hutonia, would provide a reason for persisting with the government official's plan despite the objection?

 

(A) Public parking areas are evenly distributed along the highways.

(B) Truck drivers are most likely not to comply with the federal law if the total time required for a trip exceeds ten hours by less than an hour.

(C) In comparison to public rest areas, private parking lots near highways tend to be time-consuming for drivers to reach.

(D) Even when rest areas are available, some truck drivers park in places, such as highway access ramps, where their trucks are likely to cause accidents.

(E) Some public parking areas, particularly those on heavily traveled roads, are substantially larger than others.

1.despite the objection什么意思？

2.private parking lots near  和题目的our business一样吗？

 

chenchanchan

我来一个语法题目 两位mm讨论一下

7.    (24727-!-item-!-188;#058&001574)

 

So-called green taxes, which exact a price for the use of polluting or nonrenewable fuels, are having a positive effect on the environment and natural resource base of countries as varied as
            China, the Netherlands, and Hungary.

 

(A) as varied as

(B) as varied as are

(C) as varied as those of

(D) that are as varied as

(E) that are varied as are

chenchanchan

assumption的题目 对于assumption 总是有点摸不着头脑，还请两位mm指点一下迷津：

66.
            (35089-!-item-!-188;#058&007596)

 

Bank depositors in the United States are all financially protected against bank failure because the government insures all individuals' bank deposits.  An economist argues that this insurance is partly responsible for the high rate of bank failures, since it removes from depositors any financial incentive to find out whether the bank that holds their money is secure against failure.  If depositors were more selective, then banks would need to be secure in order to compete for depositors' money.

 

The economist's argument makes which of the following assumptions?

 

(A) Bank failures are caused when big borrowers default on loan repayments.

(B) A significant proportion of depositors maintain accounts at several different banks.

(C) The more a depositor has to deposit, the more careful he or she tends to be in selecting a bank.

(D) The difference in the interest rates paid to depositors by different banks is not a significant factor in bank failures.

(E) Potential depositors are able to determine which banks are secure against failure.