求教大家几道题，都是模考当中的，麻烦大家了：

1.People with a certain eye disorder are virtually unable to see in moderately bright light, which seems to them unbearably intense, since the cells of their retinas are overwhelmed by moderately bright light. These people do, however, show normal wensitivity to most components of dim light. Their retinal cells are also not excessively sensitive to red components of modertely bright light.

The information above best supports which of the following hypotheses about people with the disorder described, if they have no other serious visual problem?

a. in all moderately dim light in which people without the disorder can read large print, people with the disorder cannot read such print.

b.in an otherwise dardened concert hall, these people will see a dimly illuminated red exit sign more clearly than small dim white lights that mark the aisles.

c.eyeglasses that are transparent to red components of light but filter out other components of light help these people see in moderately bright light.

（这一题为什么答案是C呢？）

2. A significant number of complex repair jobs carried out by ACE Repairs have to be rewored under the company's warranty. The reworked jobs are invariably satisfactory. When initial repairs are inadequate, therefore, it is not because the mechanics lack competence; rather, there is clearly a level of focused concentration that complex repairs require that is elicited more reliably by rework jobs than by first-time jobs.

THe argument above assumes which of the following?

a. there is no systematic difference in membership between the group of mechanics who do first-time jobs and the group of those who do rework jobs.

b. there is no company that successfully competes with ACE Repairs for complex repair jobs.

c. ACE Repairs's warranty is good on first-time jobs but does not cover rework jobs.

d.ACE Repairs does not in any way penalize mechanics who have worked on complex repair jobs that later had to be reworked.

e. there is no category of repair jobs in which ACE Repairs invariably carries out first-time jobs satisfactorily.

（这道答案A。但是我是用排除法做出来的，其实感觉A也怪怪的－－！）

第一题：亮光里看不清，暗光里看的清。但是视网膜在亮光里对红色的部分并不超过一种敏感度以至于

看不清。

那么有眼疾的人，对红色的部分是应该看起来没什么问题的，如果只让那些人看红光，其他光不看的话，

眼睛就看的见了。C

a错，红光是看的清的

B暗光里做比较，错，应该都是看的清的

第二题：

有两播人负责修理，第一次修理不好的会交给复杂修理人员，复杂修理的工作总是一如既往的令人满意。得出的结论是： 术业有专攻。并非是机械师的问题。

那么必须有个前提，大家都是兢兢业业的为大家修理的，只不过有些是初级问题，有些是复杂问题，需要不同的人来修理，这样的话才能得出如上结论。

如果初级修理的人一开始并不好好修理，而是推给复杂修理的人员。结论就有问题了。

这道题的关键是要理解最后一句话的意思。" 这些人的视网膜细胞对适度的亮光里的红光不是过分的敏感“根据第一句话”which seems to them unbearably intense“可以看出，视网膜细胞对某种光过分敏感会导致看不清,所以，c 答案是正确的。（如果过滤了除红光以外的光，就可以看见了）

many  thanks ！！