babypace暂别G

babypace

考试不用太担心，主要是要学习才能考出来，考完了就不去想了，不会很差的。

古镯

帮baby顶一下！

今天休息！

babypace

谢谢镯子，复习很用功，而且有成效。能坚持下来都是真英雄！

关于SC句子里面有些修饰结构的用法，我的看法是，有时候我们也要用正常的逻辑思维去读题。有些结构之所以产生歧义是因为一个句子有两种理解了，而且这两种理解都能说得通的，那就不是个好句子。但是有些分词结构放在句尾到底是用来修饰那个前面出现过的名词的，这类问题我们还是要逻辑地去看。虽然前面出现的名词都有被修饰的可能，但是不意味着就一定产生歧义了，所谓歧义不光是修饰的问题。如果其中一个名词被修饰后根本不合逻辑，那这就不是歧义，很明显那个分词结构只能是修饰一个名词的，所以不存在歧义问题。代词they, it等在句子里面也有同样的现象。等我慢慢后面总结时多加注意标出这方面的理解和解释。

第一遍总结时太钻牛角尖了，很多问题稀奇古怪都能发现，其实都根本不应该成为问题的。所谓复习要能沉得下去，也要能浮得上来。

babypace

something more than GMAT column:

Our daily diet supplies the essential nutrients we need, which can’t be made by the body. These nutrients are: carbohydrates, fat, protein, which are called macronutrients, and vitamins and minerals, which are known as micronutrients. Micronutrients are energy-yield nutrients, and required in larger amounts than that of micronutrients.

Food energies expressed in kilocalories. A calorie is the amount of hear required to raise the temperature of a gram of water by 1 C.

1g carbohydrate = 4 calories

1g fat = 9 calories

1g alcohol = 7 calories

1g protein = 4 calories

What astonished me is I thought that protein should provide more calories than carbohydrate, but it’s not. So maybe those MMs who are on diet could try more carbohydrates instead of fat and some amount of the proteins. Too many proteins won’t be absorbed by our body, thus will be ejected through urine, so do the vitamins. But note that too much Vitamin A, D and K may store in our liver and fat cells to a toxic level. Vitamin C can facilitate iron absorption, and vitamin d improves calcium absorption. I think that’s the reason that there’s a type of milk with vitamin D. We are told that drink milk can help us build our bones, but without vitamin D, the effect will be minor.

Another thing more MMs will interest in is the antioxidant vitamins. What makes us age every day, every year? Because of the free radicals in our body that can damage cells throughout the body. When our body exposed to oxygen or a toxin, such as smoke, it forms free radicals. I heard there’s a new product named “OPC-3” which is basically an antioxidant can expel the excess free radicals from our body. I don’t know whether it’s better than intake antioxidants from our daily diet. So what kind of foods contains antioxidants? Foods rich in vitamin C and E, such as lemon, grape skin, etc. can help us gain more antioxidants. Maybe that’s the reason why MMs eat a lot of fruits are prettier. One American friend said that to his knowledge, the best antioxidant is Chinese green tea. Hehe, I believe so.

Ok. Too much. More than enough le. I’ll stop here. See what’s interesting things I'll find next time.

[此贴子已经被作者于2004-9-26 1:03:00编辑过]

babypace

刚和bettyamen讨论了og CR 173，怕后来忘了说了这么多，写下来会好些。

173. Researchers have found that when very overweight people, who tend to have relatively low metabolic rates, lose weight primarily through dieting, their metabolisms generally remain unchanged. They will thus burn significantly fewer calories at the new weight than do people whose weight is normally at that level. Such newly thin persons will, therefore, ultimately regain weight until their body size again matches their metabolic rate.

The conclusion of the argument above depends on which of the following assumptions?

1. Relatively few very overweight people who have dieted down to a new weight tend to continue to consume substantially fewer calories than do people whose normal weight is at that level.


2. The metabolisms of people who are usually not overweight are much more able to vary than the metabolisms of people who have been very overweight.


3. The amount of calories that a person usually burns in a day is determined more by the amount that is consumed that day than by the current weight of the individual.


4. Researchers have not yet determined whether the metabolic rates of formerly very overweight individuals can be accelerated by means of chemical agents.


5. Because of the constancy of their metabolic rates, people who are at their usual weight normally have as much difficulty gaining weight as they do losing it.

这题我在第一次做时选了C，其实选C是由于我不确定能选什么。隔了好一段时期我再做这题（我不太会总结CR，所以第一次错的题也没有看完解释），做对了。如我前面贴子所说，我在第一次做题和总结时入了泥沼，太过钻牛角尖，很多题目我还是建议用常识思维去分析（这点和mindfree的看法一致）。

说说这题我后来是怎么想的。

题干：研究发现过度超重的人相对的新陈代谢率较低。他们主要通过节食来减肥，而新陈代谢率保持不变。（这部分题目给出我们一个研究的结果，让我们知道了这些人减肥主要靠节食，而不是改变新陈代谢率）这些新瘦下来的人会燃烧比原来就那个体重上的人较少的卡路里（这句是从上面得出的，因为他们的新陈代谢率低）

结论：这些新瘦下来的人很快又会恢复原来的体重，来适应他们的新陈代谢率。（这句是说，由于他们的新陈代谢率低，所以多余的卡路里不会被消耗掉，而是储存起来，所以他们的体重会很快又上去，直到匹配他们的新陈代谢率）

读完题我试图感觉结论和提干之间缺少什么，也就是猜测可能的答案。明显，这个结论和提干之间是有gap的。读答案

A：     相对来说，超重人减肥到了新的体重后，几乎没有人继续摄入比原来就那个体重的人少很多的卡路里了。（这就是说，那些人不再节食了，而他们的新陈代谢率又低，所以会恢复到原来的体重。--这就是题目要的假设。如果这个假设不成立，也就是取非，他们如果继续节食，即使新陈代谢率低，他们也不会重新回到原来体重，因为这些人主要就是靠节食减肥的，这一点在题干第一句已经说了）

B：      不超重人的新陈代谢率比较容易变化相对那些曾经超重的人来说。（没看出来这和题目的结论有什么关系，是个无关选项）

C：     一个人每天燃烧的卡路里主要是由每天摄入的卡路里决定的，而不是体重。（题干里说过，新陈代谢率是不变的，所以这里不该讨论新陈代谢率的变化，而是应该讨论饮食对体重的影响。饮食是这个题目的变量，新陈代谢率是个恒量。）

D：     研究者还没有肯定原先超重的人的新陈代谢率是不是能通过药物加速。（无关选项）

E：      由于稳定的新陈代谢率，正常体重的人通常很难减肥和增重。 （又是个无关的选项）

从上面逐字逐句看下来，A是无疑的答案。其他答案大多连边都不沾。在我第一次做题时，没有充分搞清题目意思的情况下，C看上去还挺有那么点意思的，第二次翻到这题就发现C是违反了最基本的题干了。

感觉做题读题很重要，读题要的是对题目里的逻辑关系的了解，而不是字和句的意思。特别想起那句诗：不识庐山真面目，只缘身在此山中。从高一点的角度看题目，感觉会清楚很多，一下子能找到答案。题目读清楚了以后，其实心里面自然对答案有个猜测的。然后就用我们的常识逻辑去把正确的选出来。

[此贴子已经被作者于2004-9-27 2:54:10编辑过]

古镯

题目读清楚了以后，其实心里面自然对答案有个猜测的。然后就用我们的常识逻辑去把正确的选出来。

baby，好用功！星期六、星期天都怎么努力！

流沙

babypace总结的好详细，＋U＋U。这样下去一定很厉害的

bettyamen

看了babypace总结的和执行的情况，真的很感动。觉得自己是在全职复习，每天实在太懒了，每天都把时间浪费很多。得加把劲。

babypace

谢谢流沙和betty。

流沙是不是快考了，加油！

betty一个人坚持复习，真是不容易，其实你的复习也很仔细的，不放过每个不理解的地方。大家多多讨论会有很大帮助的。有时候一个人的思维多少有局限性。