2006年8月队请进！欢迎大家来讨论

mymengming

The two underlined words contain two separate errors. The pronoun (which) introduces ***nonrestrictive*** clauses, which include information relevant but not critical to an understanding of the sentence. The pronoun (that) introduces a restrictive clause, which is critical to understanding the sentence because the clause defines its antecedent. Here, the clause following (which) defines heat-exchange network, so (that) must be used in place of (which). The use of the past tense (kept) is incorrect because a current situation is discussed; the present tense (keeps) is consistent with the other verbs in the sentense.

B Correct. (that) introduces a restrictive clause; (keeps) indicates a current situation and is consistent with the other verbs in the sentence.

原来GMAT的从句的限定与非限定是这样判断的,有逗号的不一定是非限定,没有逗号的也不一定是限定

只要是that就是限定,只要是which就是非限定,要用逻辑意思来判断!!!

偶的总结对不对阿??

zimerman

M兄实力超强！

jessiebetty

一个一直狒狒给我的困饶

问点(r,s)在直线y=2x+3上？

(1)(2r-s+3)(4r+2s-6)=0

(2)(3r+2s-5)(2r-s+3)=0

为什么是Ｅ

zimerman

解不唯一 所以是E

jessiebetty

为什么Ｃ不行呢，两个或或合起来的交集不就是所得的唯一解啊？？

mymengming

以下是引用jessiebetty在2006-8-12 22:23:00的发言：

一个一直狒狒给我的困饶

问点(r,s)在直线y=2x+3上？

(1)(2r-s+3)(4r+2s-6)=0

(2)(3r+2s-5)(2r-s+3)=0

为什么是Ｅ

我看了还犹豫了下,答案是对的

(1),两个方程2r-s+3=0      or    4r+2s-6=0(2r+s-3=0)

(2).两个方程3r+2s-5=0    or    2r-s+3=0

单个肯定不可以

2r+s-3=0  和  3r+2s-5=0 连立解出解为s=r=1

但是这个解不在线上

所以选E

silviaqiu

http://forum.chasedream.com/dispbbs.asp?boardID=34&ID=187097&page=1

大家帮个忙

liquid_84

以下是引用mymengming在2006-8-12 22:07:00的发言：

大跌眼镜的一题

7. Carnivorous mammals can endure what would otherwise be lethal levels of body heat because they have a heat-exchange network, which kept the brain from getting too hot.

A. which kept

B. that keeps

C. which has kept

D. that has been keeping（B）

E. having kept

这题是OG11上的吧，你看的哪里的题目，我刚刚看过原版，上面是没有逗号的

jessiebetty

明白了,不过纠正以下,就算求的解不在,也是一种答案

顾风

以下是引用mymengming在2006-8-12 22:07:00的发言：

大跌眼镜的一题

7. Carnivorous mammals can endure what would otherwise be lethal levels of body heat because they have a heat-exchange network, which kept the brain from getting too hot.

A. which kept

B. that keeps

C. which has kept

D. that has been keeping（B）

E. having kept

老兄，没有那个逗号。。。