一道老prep的逻辑题，百思不得其解，向NN求助！

起风113

Which of the following most logically completesthe argument?

United Statesmanufacturers currently produce most of the world's solar-powergenerators--most of which are exported to Europe.  However, European manufacturers are emergingand probably will ultimately capture much of the European market.  The United States government is funding initiatives intended toencourage use of solar power within the United States.  If these initiatives succeed in increasingthe demand for solar-power generators in the United States, United  States manufacturers will probably maintainsignificant production levels, since __________.

(A) some United States manufacturers havebeen substantially increasing their output over the last several years

(B) the efficiency of solar-power generators inconverting energy from the Sun into electric power is not improving as fast asit once did

(C) just as European manufacturers enjoy certaincompetitive advantages in Europe, so do United States manufacturers in the United States

(D) European governments are currently undertakinginitiatives to stimulate the use of solar power within Europe

(E) the current market for solar-power generatorsin the United Statesis very limited

答案是C
我觉得是E 因为当前国内市场有限，增加需求了才能保证原来要出口的产量在国内有市场。C的翻译是“就像欧洲制造商喜欢欧洲的比较优势，美国制造商也喜欢国内的比较优势”，怎么可能对？
坐等牛牛解答！  

起风113

再来一道~
Tiger beetles are such fast runners that they can capture virtually any nonflying insect.  However, when running toward an insect, the beetles intermittently stop, and then, a moment later, resume their attack.  Perhaps they cannot maintain their pace and must pause for a moment's rest; but an alternative hypothesis is that while running tiger beetles are unable to process the resulting rapidly changing visual information, and so quickly go blind and stop.

Which of the following, if discovered in experiments using artificially moved prey insects, would support one of the two hypotheses and undermine the other?

(A) When a prey insect is moved directly toward a beetle that has been chasing it, the beetle immediately turns and runs away without its usual intermittent stopping.
(B) In pursuing a moving insect, the beetles usually respond immediately to changes in the insect's direction, and pause equally frequently whether the chase is up or down an incline.
(C) The beetles maintain a fixed time interval between pauses, although when an insect that had been stationary begins to flee, the beetle increases its speed after its next pause.
(D) If, when a beetle pauses, it has not gained on the insect it is pursuing, the beetle generally ends its pursuit.
(E) When an obstacle is suddenly introduced just in front of running beetles, the beetles sometimes stop immediately, but they never respond by running around the barrier.

求详细解释BCE

拧发条喵

题干说，如果国内需求增加，那么国内生产商不会怎么受到影响，
但如果国内需求被外国生产商瓜分了呢，比如正在崛起的欧洲生产商啊。
选项C否定了这个结论 因此加强了题干。

选项E，不要进一步考虑，它最直接的意思就是国内市场狭小，增加的需求有限，削弱

拧发条喵

Tiger beetles are such fast runners that they can capture virtually any nonflying insect.  However, when running toward an insect, the beetles intermittently stop, and then, a moment later, resume their attack.  Perhaps they cannot maintain their pace and must pause for a moment's rest; but an alternative hypothesis is that while running tiger beetles are unable to process the resulting rapidly changing visual information, and so quickly go blind and stop.

Which of the following, if discovered in experiments using artificially moved prey insects, would support one of the two hypotheses and undermine the other?

(A) When a prey insect is moved directly toward a beetle that has been chasing it, the beetle immediately turns and runs away without its usual intermittent stopping.
(B) In pursuing a moving insect, the beetles usually respond immediately to changes in the insect's direction, and pause equally frequently whether the chase is up or down an incline.
在捕捉移动对象时，B对猎物的移动立刻做出改变，而且在上移下移的过程中提顿的频率不变——即不是看不见，也不是累。因为上移下移要求的体力明显不一样
(C) The beetles maintain a fixed time interval between pauses, although when an insect that had been stationary begins to flee, the beetle increases its speed after its next pause.
停顿间隔一致+即使是静止猎物开始移动，B虫都是在停顿后增加速度——停顿后增加速度，说明不是体力问题，因为如果是要恢复体力，不会导致速度增加；而且停顿间隔一致，说明也不是体力问题，因为如果是体力问题，在刚开始追逐时停顿间隔一定会更长；而支持了看不见的假设，它需要看清猎物然后加速。（这个选项还有反过来的解释，就是加强体力 削弱视力假设，虽然我觉得这个解释不对，但怎样都是加强一个削弱一个 看你自己理解吧……）
(D) If, when a beetle pauses, it has not gained on the insect it is pursuing, the beetle generally ends its pursuit.
(E) When an obstacle is suddenly introduced just in front of running beetles, the beetles sometimes stop immediately, but they never respond by running around the barrier.
在B虫前突然加个障碍，B有时立刻停下，但从不围着那个障碍转——既不是看不见也不是跑不动。其实就是基本无关。

起风113

拧发条喵 发表于 2013-8-15 22:19
题干说，如果国内需求增加，那么国内生产商不会怎么受到影响，
但如果国内需求被外国生产商瓜分了呢，比如 ...

谢谢谢谢~~~~这个解释地好棒，的确是有瓜分需求的存在我没有想到，除去了潜在可能

起风113

拧发条喵 发表于 2013-8-15 22:27
Tiger beetles are such fast runners that they can capture virtually any nonflying insect.  However,  ...

我有了新理解~
这个C的a fixed time interval between pauses 应该是每隔相同的时间休息一次的意思吧？
是不是应该是削弱跑不动？因为每次休息以后加速了应该更累，导致提早休息，但是间隔时间还是一样？
看不见增强是因为明明看见停顿的猎物要跑了还休息。。。说明没看见？汗。。。

能不能再解释一下E的跑不动？我可以理解E削弱了看不见。。。
发条喵原谅我这只笨喵的智商哈~

拧发条喵

起风113 发表于 2013-8-15 22:49
我有了新理解~
这个C的a fixed time interval between pauses 应该是每隔相同的时间休息一次的意思吧？
...

是的呀 你理解没错

我觉得E跟跑不动无关啦，没有相关信息