Question

【題目】Have you ever wished you could see in the dark as well as an animal? In action movies, we often see characters wearing special glasses that reveal（顯示）things that can't be seen in darkness. Everything looks green, but we can see the shapes and outlines clearly. As a matter of fact, this is somewhat similar to the way animals' night vision (視力) works.

You may have noticed eyeshine in pictures of animals, or seen it for yourself when light hits an animal's eyes. Dogs, cats, and many other animals have tissue (組織) called the tapetum lucidum（光神經(jīng)纖維層） in each eye. The purpose of this tissue is reflect (反射) light deeper into the eye. For many animals, it leads to their excellent night vision, and it helps them hunt.

Different types of animals have different colors of eyeshine. The light reflecting back from the eyes of dogs and cat is likely to be yellow. Rats and birds usually have eyes that shine red. Other animals’ eyes may reflect white, yellow, green, or pink light. In each case, the color is related to the type of cells that make up the tapetum lucidum, as well as the chemicals inside the cells.

Eyeshine has the function of improving animals' night vision, but humans have found other uses for it. For example, when people are searching for certain types of animals, their eyeshine may be helpful in recognizing or discovering them. Also, eyeshine has inspired humans to invent substance (物質(zhì)) that reflect light at night. Strips containing this substance are used to warn us of safety risks such as raised parts of roads. Even though humans cannot see so well at night, we have still found ways to benefit from this amazing animal feature.

【1】How does the tapetum lucidum help animals' night vision?

A. It sends out light in the dark. B. It makes everything appear green.

C. It reflects light back into the eyes. D. It enables them to see colors at night.

【2】How does the author mainly develop Paragraph 3?

A. By providing reasons. B. By giving examples.

C. By following space order. D. By doing experiments.

【3】What can we learn about scientists' research on eyeshine?

A. They've put it to practical uses.

B. They're using it to protect some animals.

C. They're trying to include more animal types.

D. They've invented special glasses based on it.

【4】What is the text mainly about?

A. How humans' night vision works. B. Different colors of animals' eyes.

C. How animals see in the dark. D. Eyeshine and its benefits.

Answer 1

【答案】

【1】C

【2】B

【3】A

【4】D

【解析】

本文是一篇說明文。文章講述的是Eyeshine和它的好處。

【1】細節(jié)理解題。根據(jù)第二段中Dogs, cats, and many other animals have tissue (組織) called the tapetum lucidum（光神經(jīng)纖維層） in each eye. The purpose of this tissue is reflect (反射) light deeper into the eye. For many animals, it leads to their excellent night vision, and it helps them hunt.可知，它反射光線回到眼睛來幫助動物的夜間視力。故選C。

【2】推理判斷題。根據(jù)第三段中Different types of animals have different colors of eyeshine. The light reflecting back from the eyes of dogs and cat is likely to be yellow. Rats and birds usually have eyes that shine red. Other animals’ eyes may reflect white, yellow, green, or pink light. 可知，作者主要是通過舉例子來發(fā)展第3段的。故選B。

【3】推理判斷題。根據(jù)最后一段中eyeshine has inspired humans to invent substance (物質(zhì)) that reflect light at night. Strips containing this substance are used to warn us of safety risks such as raised parts of roads.可知，我們能從科學家對眼睛的研究中了解到他們已經(jīng)把它放在實際用途上。故選A。

【4】主旨大意題。根據(jù)第二段第一句You may have noticed eyeshine in pictures of animals, or seen it for yourself when light hits an animal's eyes.第三段第一句Different types of animals have different colors of eyeshine.和第四段第一句Eyeshine has the function of improving animals' night vision, but humans have found other uses for it.可知，本文講述的是Eyeshine和它的好處。故選D。

抓住文章主線和關(guān)鍵詞語，歸納文章中心

要注意不是所有的段落都有主題句，有時主題句暗含在句中。閱讀這樣的文章，就需要自己根據(jù)文章的細節(jié)來分析，概括出段落的主題，從而推導(dǎo)出文章的主旨。分析的方法是：先弄清該段落主要講了哪幾方面的內(nèi)容，這些內(nèi)容在邏輯上有什么聯(lián)系，然后加以歸納形成主題。本題第4小題，根據(jù)第二段第一句You may have noticed eyeshine in pictures of animals, or seen it for yourself when light hits an animal's eyes.第三段第一句Different types of animals have different colors of eyeshine.和第四段第一句Eyeshine has the function of improving animals' night vision, but humans have found other uses for it.可知，本文講述的是Eyeshine和它的好處。故選D。