Question

【題目】The color of animals is by no means a matter of chance; it depends on many considerations, but in the majority of cases tends to protect the animals from danger by making it less outstanding Perhaps, it may be said that if coloring is mainly protective, there ought to be fewer brightly colored animals. 【1】. The kingfisher itself, though so brightly colored, is not easy to see.

【2】. Thus, for instance, the lion, and the wild donkey are all sand—colored. “Indeed, in the desert, neither trees, brushwood, nor even undulation (起伏) of the surface afford the slightest protection to its enemies.【3】.” says an expert.

The next point is the color of the mature caterpillars(毛蟲), some of which are brown. This probably makes the caterpillar even more outstanding among the green leaves. What would you do if you were a big caterpillar? Why, like most other defenceless creatures, you would feed by night, and lie hidden by day. 【4】. When the morning light comes, they go down the stem of the food plant, and hide among dry sticks and leaves around the ground, and it is obvious that under such circumstances the brown color really becomes a protection. While we may say as a general rule that the large caterpillars feed by night and hide by day, it is by no means always the case that they are brown: some of them still remain green.【5】, and that the brown color is a later adaptation.

A. So do these caterpillars

B. Therefore, the color of the animals is bright

C. We can say that they formed a good habit

D. Desert animals are generally the color of the desert

E. We may conclude that the habit of hiding themselves by day comes first

F. However, there are some cases where vivid colors are themselves protective

G. So the color of birds, snakes and even smaller animals, is of one uniform sand color

Answer 1

【答案】

【1】F

【2】D

【3】G

【4】A

【5】E

【解析】這是一篇議論文。本文主要講了動(dòng)物的身上的顏色是具有保護(hù)性的，他們會(huì)因生活區(qū)域的不同而顏色不同，例如在沙漠中的動(dòng)物大多是沙色的。

【1】空前一句提到如果動(dòng)物的顏色是具有保護(hù)性的，那么顏色鮮艷的動(dòng)物應(yīng)該更少。后一句提到翠鳥本身雖然顏色鮮艷，但不容易看到。可知，前后矛盾，所以該空是轉(zhuǎn)折句，對(duì)前一句的否定，所以F選項(xiàng)“然而，在某些情況下，鮮艷的色彩本身就是保護(hù)性的�！鼻蓄}，空后一句提到的翠鳥與該選項(xiàng)相呼應(yīng)。

【2】根據(jù)空后的for instance，該句是總結(jié)句，for instance后的句子是證明該句是正確的。故D選項(xiàng)“沙漠動(dòng)物通常是沙漠的顏色�！鼻蓄}。選項(xiàng)中的 Desert animals 對(duì)應(yīng)文中的in the desert。

【3】上一句提到在沙漠中，樹木，草叢都不會(huì)對(duì)他們起到保護(hù)作用。該句說明的是具有沙漠色的重要性，故G選項(xiàng)“因此，鳥類，蛇類甚至小動(dòng)物的顏色都是一種均勻的沙色�！鼻蓄}。

【4】上一句提到“像大多數(shù)其他沒有防御能力的生物一樣，你會(huì)在夜間喂食，白天隱藏起來�！毕乱痪渲v的是棕色的毛蟲白天是怎樣隱藏的，所以該句講的是棕色的毛蟲和其他沒防御能力的動(dòng)物一樣需要躲藏。故A“這些毛毛蟲也是如此。”切題。

【5】上一句提到那些晚上覓食白天躲藏的毛蟲并不總是棕色的，他們中有一些是綠色的。也就是說不管是什么顏色的毛蟲，都會(huì)有白天躲藏的習(xí)慣。所以E選項(xiàng)“我們可以得出結(jié)論，白天隱藏自己的習(xí)慣是首要的。”切題。