5. In the nation of Partoria, large trucks currently account for 6 percent of miles driven on Partoria’s roads but
are involved in 12 percent of all highway fatalities. The very largest trucks—those with three trailers—had less
than a third of the accident rate of single- and double-trailer trucks. Clearly, therefore, one way for Partoria to
reduce highway deaths would be to require shippers to increase their use of triple-trailer trucks.
Which of the following, if true, most seriously weakens the argument?
(A) No matter what changes Partoria makes in the regulation of trucking, it will have to keep some smaller
roads off-limits to all large trucks.
(B) So far only the best, most experienced drivers for Partorian trucking companies have been driving tripletrailer trucks.
(C) Very few fatal collisions involving trucks in Partoria are collisions between two trucks.
(D) In Partoria, the safety record of the trucking industry as a whole has improved slightly over the past ten
years.
(E) In Partoria, the maximum legal payload of a triple-trailer truck is less than three times the maximum legal
payload of the largest of the single-trailer trucks.
这道题为什么选B呢？

farmer的目的是杀死害虫，但是这两种药的缺点是还没达到致命剂量就无法进食了，虫子没法继续吃毒死去，无法有效达到farmer的目的。

1) 在GMAT考试用只能用whether表示“是否“,不能用if

2) when不能够引导条件从句

3) 习惯用语:in depth

(A) if应该改成whether;使用when从句来表示条件从句,错误

(B) if应该改为whether; with as much depth不符合习惯用法

(C) It is unclear whether… or would…结构不平行

(D) similar patterns would be exhibited in other animals表达笨拙,应该改为主动语态;with as much depth不符合习惯用法;用that限定性定语从句修饰animals无法表达出条件关系,改变了句子的合理意思 大仙注释：其实就是尊重前半截即可，前半截用主动

(E) 正确, It is unclear whether… or whether…结构平行;用语简洁,符合习惯用法;使用if从句表达条件关系,符合句子的逻辑意思

这道题是选C的吧，在别的论坛上看都是C，文章也完全没有提男人和女人的经济行为有没有变得更varied的，有的只是说男人的行为要变得更广泛，走向了外地； 而且，全文都在围绕commercial interests and credit networks，如果是varied，应该讲他们的经济行为变得更多样了（比如说买债券买股票买保险blabla）；这个less varied 也很有问题。
C对应原文： in fact, both the absolute numbers and the percentage of adult women participating in civil cases grew steadily throughout the eighteenth century, but the legal activity of men also increased dramatically, and at a much faster rate.

At the same time, women's networks of credit and debt remained primarily local and personal. --女性更关注本地、私人的debt
Dayton contends that, although still performing crucial economic services in their communities—services that ontributed to the commercialization of the colonial economy—women remained for the most part outside the new economic and legal culture of the eighteenth century.--女性依旧被排除在外
用排除法选择
mark

寻找same function的句子，即能够说明Such water would be useless in improving physical performance的句子
A选项只是说不喝这个水也可以，没有直接说明没用；E选项也是没有直接说明；只有C选项，明确指出只能通过肺来吸收，因此喝了没用

或然性推理，结论是公立学校的老师职缺不会因为经济萧条而减少，前提是老师和学生的比例不变，那么gap就在学生的数量，所以要确保学生一定会变多，老师的缺口就会相对增大

原来是选项B意思读反了，抽主干：
It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.
It形式主语代替后面这一件事情：restriction led the hunting season being closed earlier
所以还原回来表示这件事情has been many years，读的时候误以为这件事情持续很久了，没想到要理解为 已经是很久以前的事了

D选项：本选项在more和most的措辞上是没有问题的，但that have yet been discovered这个定语从句是不正确的。该定语从句会就近修饰一个复数名词，但不管是鸟，还是恐龙，抑或是恐龙和鸟，均是不正确的。在逻辑上，“到现在为止被发现”的应该是证据

not so much... as.... 与其说 A，不如说B

第二个像作者的观点，而非证据（应该由support提供）。联系后面作者给出了相关的解释和分析，可得第二句是作者的conclusion。
多读题目 读完整

第二个像作者的观点，而非证据（应该由support提供）。联系后面作者给出了相关的解释和分析，可得第二句是作者的conclusion。
多读题目 读完整

第二个像作者的观点，而非证据（应该由support提供）。联系后面作者给出了相关的解释和分析，可得第二句是作者的conclusion。
多读题目 读完整

B讨论的是儿童而非成年人
D/E在文中讨论了liangge 例外，D/E都只考虑了cancer。

通常if可以连接真实条件句或非真实条件句，而on condition that则通常只连接非真实条件句。
条件不论真实还是非真实）均应以从句来表达，ing短语通常是用来表达具有真实性的事件的。

或者是这种herb的样本，是否在这一个group里都具有代表性

A主干：tomatoes too less appetizing... or have plenty of bumps 但是这种番茄的特性并不是or的关系，所以错误
当时纠结没选E是因为觉得they既可以指代tomatoes也可以指代cousins，但是要根据选项最合理的意思来读，Gmat是可以接受模糊指代的

小数点后第一位就是tenth digit了，题目问的是units digit是个位数哇～

题目问的是交集 不是并集

题目问的是交集 不是并集