Question

The first crocodiles(鳄鱼) lived on the Earth about 240 million years ago. How much do you know about these dangerous animals? Here are some amazing facts about them.

◆ The biggest crocodile is the saltwater crocodile. It can be as long as seven metres!

◆ If you take a bright light at night over a river with crocodiles inside, you will see pairs of red spots (点). Those are the crocodiles’ eyes. They can see well at night.

◆ When you see a crocodile with its mouth open, don’t be scared. That just tells you it’s too hot.

◆ On the beach, crocodiles get tired very quickly, but they can stay in the water for 2-3 hours.

◆ Most crocodiles can live up to 70 years old!

1. When did the first crocodiles live?

A. About 2,400,000,000 years ago. B. About 240,000,000 years ago.

C. About 24,000,000 years ago. D. About 2,400,000 years ago.

2. The writer thinks the crocodile is 　　 .

A. lovely B. dangerous

C. fun D. cool

3. What’s the meaning of the underlined word “scared”?

A. Happy. B. Sad.

C. Comfortable.D. Afraid.

4. Which of the following is right?

A. Crocodiles often open their mouths when it’s hot.

B. Crocodiles can stay on the beach for 2-3 hours.

C. All the crocodiles can live up to 70 years old.

D. The writer talks about four facts about crocodiles.

 

Answer 1

1.B

2.B

3.D

4.A

【解析】

试题分析：本文叙述了鳄鱼在2.4亿年前就生活在地球上，最大的鳄鱼是盐水里的鳄鱼，长达7米，晚上鳄鱼的视力也很好。当鳄鱼感到热的时候，它就会张着嘴。它的寿命一般能达到70年。

1.细节理解题。根据The first crocodiles(鳄鱼) lived on the Earth about 240 million years ago.鳄鱼在240，000，000年前生活在地球上，故选B。

2.细节理解题。根据How much do you know about these dangerous animals? 可知作者认为鳄鱼是危险的动物，故选B。

3.小题3】词义猜测题。根据When you see a crocodile with its mouth open 可推知这里可能误认为鳄鱼要吃人，所以人们都会感到害怕，故选D。

4.4】细节理解题。根据When you see a crocodile with its mouth open，That just tells you it’s too hot.可知鳄鱼热的时候就张着嘴，故选A。

考点：科普类短文阅读。