求助PREP 1-33

scorpio2rd

33.   (31934-!-item-!-188;#058&005658)

 

When a caterpillar emerges from the egg on a tree branch, it immediately climbs upward until it finds a leaf bud to eat.  Biologists thought that this behavior displayed an innate tendency to move in the direction opposite to the pull of gravity.  In a recent experiment, a strong light source was placed at the bottom of a tree, and caterpillars, after hatching, climbed downward.

 

Which of the following hypotheses is best supported by the statements given?

 

(A) Caterpillars have an innate tendency to move in the direction of gravity.

(B) Newly hatched caterpillars are unable to see in the dark.

(C) Newly hatched caterpillars move towards the strongest light source in the environment.

(D) Newly hatched caterpillars move toward the leaf bud nearest to them.

(E) The eyes of newly hatched caterpillars become less sensitive to light over time.

答案是C

为什么A 不对呀... 我选的时候在A 和C挣扎了半天...结果选了A......求NN指导...

vincentwh

以下是引用scorpio2rd在2008-11-26 10:05:00的发言：

33.   (31934-!-item-!-188;#058&005658)

 

 

When a caterpillar emerges from the egg on a tree branch, it immediately climbs upward until it finds a leaf bud to eat.  Biologists thought that this behavior displayed an innate tendency to move in the direction opposite to the pull of gravity.  In a recent experiment, a strong light source was placed at the bottom of a tree, and caterpillars, after hatching, climbed downward.

 

 

Which of the following hypotheses is best supported by the statements given?

 

 

(A) Caterpillars have an innate tendency to move in the direction of gravity. 毛虫有先天的向重力方向移动的能力。文章明明说它从蛋里出来后，向上爬。

(B) Newly hatched caterpillars are unable to see in the dark.

(C) Newly hatched caterpillars move towards the strongest light source in the environment.

(D) Newly hatched caterpillars move toward the leaf bud nearest to them.

(E) The eyes of newly hatched caterpillars become less sensitive to light over time.

答案是C

为什么A 不对呀... 我选的时候在A 和C挣扎了半天...结果选了A......求NN指导...

怎么会选A呢？ 假设也就是支持结论！

caoxueting

文章说 Biologists thought that this behavior displayed an innate tendency to move in the direction opposite to the pull of gravity

而A选项相当于反对原文，当然不对了

smallmole

lulud

那为什么不选B呢？