求大神解答几题helr上不懂得题目

415lethe

1. In order to stop hair loss, a shampoo company plans to use Angelica sinensis, an eatable herb, as an important additive in its shampoo. Angelica sinensis can only be found at Yangshuo, a smal town in China, and the hair of residents in Yangshuo who use Angelica sinensis as shampoo is extremly healthy and black. Clearly, therefore, the product of shampoo with Angelica sinensis should be effective to stop hair loss

Which of the following is an assumption on which the argument depends?


A.Angelica sinensis will not be ineffective if synthesized with other ingredients in many shampoos.
B.If the residents in Yangshuo leave to other cities, many of them will suffer hair loss.
C.Some of the shampoo company's consumers do not suffer from hair loss.
D.Even if the shampoo company adds Angelica sinensis to its product, the sales of shampoo will remain stable or even decrease slightly because of its poor band image.
E.It can be estimated that in the year after the company adds Angelica sinensis, there would not be a greater variety of shampoos on the market than there was during the previous year.







正确答案：B
楼主选的A 很纠结AB啊 ，求大神解答







2.Parasitic wasps lay their eggs directly into the eggs of various host insects in exactly the right numbers for any suitable size of host egg. If they laid too many eggs in a  host egg, the developing wasp larvae would compete with each other to the death for nurtrients and space. If too few eggs were laid, portions of the host egg would decay, killing wasp's larvae.

Which of the following conclusions can properly be drawn from the information above?

A. The size of the smallest host egg that a wasp could theoretically parasitize can be determined from the wasp's egg-laying behaviour.
B. Host insects lack any effective defenses against the form of predation practiced by parasitic wasps.
C. Parasitic wasps learn from experience how many eggs to lay into the eggs of different host species.
D. Failure to lay enough eggs would lead to the death of the developing wasp larvae more quickly than laying too many eggs would.
E. Parasitic wasps use visual clues to calculate the size of a host egg.






正确答案：A
纠结于C
如果按照题目的意思 这种寄生性的黄蜂根据宿主昆虫的size来考虑产多少卵，如果产的太多，则黄蜂的幼虫可能因为争夺营养和空间而死亡，如果产的太少，则宿主会腐烂而杀死黄蜂幼虫。 黄蜂根据宿主的size来产卵，而A中宿主的size可以由黄蜂的产卵活动决定， 不是把因果关系说反了吗？






3.Car telephones have become increasingly popular because they permit people to make or receive business calls while driving. As an additional benefit, motorists can quickly call for help in the event of an accident or breakdown. Nevertheless, car telephones should be prohibited because their use causes hazardous driving.


It can be concluded that from the statements above the author is comitted to the truth of which of the following statements?


B. The reason twhy the use of car telephones causes hazardous driving is that while dialing calls drivers cannot keep both hands on wheel.


C. The advantanges afforded by car telephones do not outweigh the risks of hazardous driving created by them.


D. In order to dial or receive telephones calls, drivers must momentarily take their eyes off the road, and this practice is hazardous






正确答案C
求问BD为什么不可以， BD也是说的手机导致的危险驾驶啊。。。

谢谢~~

chenzhi1989

ashleesun 发表于 2016-5-11 15:07
1. In order to stop hair loss, a shampoo company plans to use Angelica sinensis, an eatable herb, as ...

那可不可能，即使那些居民去到其他地方，他们依旧可以使用含有那种物质的洗发也呢？

10109

ashleesun 发表于 2016-5-11 15:16
2.Parasitic wasps lay their eggs directly into the eggs of various host insects in exactly the right ...

同意！               

liuyongxue

阳朔人的头发又黑又密，有可能是当地的sinesis导致的，也有可能是当地的水土/气候/饮食等等诸多因素导致的；阳朔人离开了阳朔就开始掉头发，并不能证明就是sinesis这种物质导致了头发好这个结果，个人觉得这个选项B是有问题的

liuyongxue

alzn2765 发表于 2016-4-26 22:14
我看了第一题，你做的哪里的题？明显答案有误。

同意！               

zjj1997

ashleesun 发表于 2016-5-11 15:07
1. In order to stop hair loss, a shampoo company plans to use Angelica sinensis, an eatable herb, as ...

您好，我想请问一下，这些居民去别的地方就发生了脱发，可能是由多种因素造成的呀（比如水土等等），而且题目中没有说other cities就没有AS呀；如果说把B选项理解成other cities也有AS，但是却脱发，这样一来不就否定了AS对脱发的因果关系吗？

lynnwang922

额 才看到还有第二页 请无视我

lynnwang922

415lethe 发表于 2016-5-11 21:55
谢谢解答！
可是 题目中不是通过用AS洗头的人头发都很健康 推导出 加了AS的【洗发水】对头发好 gap不应该 ...

hello 有点晚了 不过想想作者费这么多口舌 非要说一下中国这个特别地区 这个应该是origin 这个题gmat想考的是 AS这个element不一定是那个地区的人头发质量好的唯一因素，也有可能跟他们当地少数民族特有的生活习惯 或者 遗传有关， 如果他们离开了居住地 which means 再也接触不到AS了 头发依然duang duang duang 那就跟AS 没啥关系了。 我第一反应也是A 其实，不过想想， A想defy的点是 一个东西 单独有用 跟别的合在一起就不一定了 但我又看了一次原文————“residents in Yangshuo who use Angelica sinensis as shampoo is extremly healthy and black” 当地人也拿AS 当shampoo 所以看来AS做shampoo这功能 已经是默认的了 而且原文没说一定要合成 可能人家就是拿当归水来洗头呢

个人觉得 A否定的很片面 只能是否定了这个命题的一半或者分支 B否定的是整个命题
希望有帮助～～祝好运

alzn2765

klarag 发表于 2016-5-23 22:49
我也想要二维码

klarag

alzn2765 发表于 2016-5-10 10:39
Here you are

我也想要二维码