Have you ever seen a horse with toes?Millions of years ago, horses had many toes. They had four toes on each front foot. They had three toes on each back foot. The horses were no bigger than the cats. 题目和参考答案——青夏教育精英家教网—

题目内容

Have you ever seen a horse with toes(脚趾)？Millions of years ago, horses had many toes. They had four toes on each front foot. They had three toes on each back foot. The horses were no bigger than the cats.These small horses lived in the forest. The toes helped the horses run on the soft, wet ground.

At first, it was very hot in the forest. But the weather changed. It became very cold. Many trees could not live in cold weather. The trees died and fell. Open fields took the place of forests. The sun made the ground dry and hard.

Horsed began to change, too. They began to get bigger. This took a long time. On the dry, hard land, horses needed only their middle toes for running. Their middle toes became hard. After a long time, horses had only one hard toe on each foot. Now we call this hard toe a hoof.

1.How many toes did a horse have millions of years ago?

A．14 B．12 C．16 D．13

2.What does the underlined word “hoof” mean in Chinese?

A．尾巴 B．马鬃 C．腿 D．蹄子

3.What was the weather like in the forest at first?

A．Very warm B．Very hot C．Very cold D．Very cool

4.Which is WRONG according to the passage?

A．The horses were much bigger than the cats millions of years ago.

B．The trees died and feel because the weather changed.

C．On the dry, hard land, horses needed only their middle toes for running.

D．The horses have fewer toes than before.

5.The main idea of the passage is that_______________.

A．horses had three toes on each back foot. B．horses lived in the hot forest

C．horses changed a lot over the years D．horses didn’t like the cold weather

【答案】

1.A

2.D

3.B

4.A

5.C

【解析】

试题分析：这篇短文主要介绍了马在多年来的进化情况。

1.根据第一段They had four toes on each front foot. They had three toes on each back foot.计算可知4*2+3*2=14，选A。

2.联系前一句After a long time, horses had only one hard toe on each foot.描述及常识，可知这个单词指的是马蹄，故选D。

3.根据第二段At first, it was very hot in the forest. 描述，可知选B

4.根据第一段The horses were no bigger than the cats.描述，可知那是马比猫不大，故选A。

5.这篇短文主要介绍的马的体型及马蹄的变化，故选C，多年以来马改变了很多。

考点：关于马的进化过程的说明文阅读

点评：本文浅显易懂，层次分明，学生很容易把握文章中心内容。答题中注意带着问题阅读短文，一般就能顺利找出答题依据。对于不能直接找到根据的问题注意联系上下文，根据短文中心总结出正确答案。

练习册系列答案

Air is very important to everything that lives. But the air we breathe is g【小题1】___ dirty. People all over the world are looking for w【小题2】___ to make it clean again.
Have you e【小题3】__ watched the smoke from chimneys rising high in the air? Have you s【小题4】__ the smoke from cars and trucks on roads or the smoke from planes? The smoke is not g【小题5】___ to breathe. If we want to keep well and strong, we need to breathe c【小题6】__ air.
W【小题7】___ more and more factories everywhere and more and more cars, trucks and planes, it is getting harder and harder to do with the air p【小题8】___.
Scientists have a【小题9】__ found ways to stop or slow down some of the things that make the air dirty. They will not stop working u【小题10】__ we have clean air again.

单词拼写（共10小题，计10分）
根据下列句子及所给单词的首字母，在答题纸上按题号写出各单词的完全形式（每空限填一词）。
【小题1】 Be careful. There is a wine b_______ on the table. You might break it.
【小题2】 The number after twenty-nine is t________.
【小题3】Have you e________ been to the Great Wall?
【小题4】It’s dangerous to d________ a car after you get drunk.
【小题5】Your parents are your f________ and mother.
【小题6】If a dream comes t________, it actually happens.
【小题7】W________ is the coldest season of the year.
【小题8】When snow f________, it comes down from the sky.
【小题9】It’s best to water plants either e________ in the morning or late at night.
【小题10】We don’t go to the c________ much for movies because we have a video.

根据短文内容及所给首字母提示写出所缺单词, 并将完整单词填在下面对应题号后的横线上。

Air is very important to everything that lives. But the air we breathe is g 1 dirty. People all over the world are looking for w 2 to make it clean again.

Have you e 3 watched the smoke from chimneys(烟囱) rising high in the air? Have you s 4 the smoke from cars and trucks on roads or the smoke from planes? The smoke is not g 5 to breathe. If we want to keep healthy and strong, we need to breathe c 6 air.

W 7 more and more factories everywhere and more and more cars, trucks and planes, it is getting harder and harder to do with the air p 8 .

Scientists have a 9 taken actions to stop or slow down some of the things that make the air dirty. They will not stop working u 10 we have clean air again.

1. 2. 3. 4. 5.

6. 7. 8. 9. 10.

根据首字母及上下文提示完成对话

A: Have you e_80___ been to Tokyo?

B: No, I have n___81__ been there before. But this summer I will go there with my parents.

A: I am s__82__ you will like it. My uncle u__83___ to work in Tokyo. But now he has g__84___to Paris for an i___85___ meeting. He will give a talk about how to p____86___ whales next week.

B: Paris? That is a really wonderful city with a very b__87_______ view.

A: R___88____? H__89___ I wish I could go there!

80____________81_____________82______________83______________84_____________

85____________86______________87_____________88______________89_____________

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