問題詳情


(E)In the animal kingdom, different kinds of animals have different ways to avoid predators. Gazelles can run fast —43一 skunks spray predators with something that smells bad There are chameleons that change color to look iike part of the background. However, scientists say that the need to hide from the predators is not the biggest reason —44— chameleons developed the ability to change colors. University of Melbourne's Dr. DeviStuart-Fox says that "chameleons —45— color change for signaling. For example, to tellanother male to back off, a chameleon will turn bright red. 46 changing colors to communicate, a chameleon might also change to help keep its body temperature —47— When the test chameleons were shown predators, their color changes were not as big. It seems that chameleons usually use color not to hide 一48— communicate with other chameleons. —49— we realize this, we may soon be able to start eavesdropping on these messages. —50— we succeed in eavesdropping someday, we will have a much better understanding of these animals. In future, the dream may come true.
43.
(A) as
(B) when
(C) while
(D) though

參考答案

答案：C
難度：非常困難0
統計：A(2),B(1),C(0),D(0),E(0)

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