Question

Like all vertebrates(脊椎动物), fish have sense organs that tell them what is happening within their environment. The organs enable them to see, hear, smell, taste and touch.

A fish’s eyes differ from those of land vertebrates in several ways. For example, most fish can see to the right and to the left at the same time for the fact that a fish has no neck and so cannot turn its head. Fish also have no eyelids. For land vertebrates, eyelids(眼睑）help moisten(使湿润) their eyes and protect them from sunlight. A fish’s eyes are kept moist by the flow of water over them. They do not need to be shielded from sunlight because it is seldom extremely direct and bright underwater. Some fish have unusual adaptations of the eye. For example, a flatfish has two eyes on the same side of the head. A flatfish spends most of the time lying on its side on the ocean floor and so needs eyes only on the side that faces upward. The eyes of certain deep-sea fish are at the ends of short structures that stick out from the head. These structures can be raised upward, allowing the fish to see overhead as well as to the side and to the front.

A few kinds of fishes are born blind. They include certain species of catfish that live in total darkness in the waters of caves. Some of these fishes have eyes but no vision(视觉). Others lack eyes completely.

1.Why can’t a fish turn its head? (no more than 6 words)

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2.What can prevent land vertebrates’ eyes from sunlight? (no more than 3 words)

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3.Why are the flatfish’s eyes different from other fishes’? (no more than 14 words)

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4.What is the passage mainly about? (no more than 6 words)

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Answer 1

【答案】

1.Because it has no neck.

2.Their eyelids.

3.Because the flatfish has two eyes on the same side of the head.

4.A fish’s sense of sight.

【解析】

试题分析：

1.从第一段的句子：for the fact that a fish has no neck and so cannot turn its head. Because it has no neck.可知鱼没有脖子不能转头。

2.从第二段的句子：eyelids(眼睑）help moisten(使湿润) their eyes and protect them from sunlight. 可知答案是Their eyelids.

3.从第二段的句子：a flatfish has two eyes on the same side of the head.可知答案是Because the flatfish has two eyes on the same side of the head.

4.从第二段的句子：A fish’s eyes differ from those of land vertebrates in several ways.A fish’s sense of sight.可知这篇文章主要讲的是鱼的视觉。

考点：考查阅读表达

点评：阅读表达的题目要根据文章的内容进行回答，有的是细节题，到相关的段落寻找关键句，得出答案，还有推理题，要根据相关的句子找出作者想要表达的意思，考查学生的理解力。