Question

【题目】Dolphins are not fish, but warm-blooded animals. They live in groups, and speak to each other in their own language. In this way they are like other animals, such as bees and birds. But dolphins are very different from almost all land animals. Their brain is nearly the same size as our own, and they live a long time --- at least twenty or thirty years.

Like some animals, dolphins use sound to help them find their way around. They also use these sounds to talk to each other and to help them find food. We now know they do not use their ears to receive these sounds, but the lower part of the mouth, called the jaw.

Strangely, dolphins seem to like man, and for thousands of years there have been stories about the dolphin and its friendship with people.

There is a story about sailors in the 19th century. In a dangerous part of the sea off the coast of New Zealand, they learnt to look for a dolphin called Jack. From 1871 to 1903 Jack met every boat in the area and showed it the way. Then in 1903 a passenger on a boat called The Penguin shot and wounded Jack. He recovered and for nine years more continued to guide all ships through the area－except for The Penguin.

Today, some people continue to kill dolphins, but many countries of the world now protect them and in these places it is against the law to kill them.

【1】Dolphins are different from many other animals in that they _____.

A. live in groups B. have their own language

C. are warm-blooded D. have large brains

【2】Which of the following does the dolphin use to help it find its way around?

A. Its jaw. B. Its ears

C. Its nose. D. Its eyes.

【3】By telling the story of Jack the writer wanted to show that _____.

A. people are cruel to animals

B. Jack is different from other dolphins

C. dolphins are friendly and clever

D. dolphins should be protected by law

【4】Why did the sailors off the coast of New Zealand look for Jack?

A. They wanted his help.

B. They enjoyed playing with him.

C. He was lonely and liked to be with people

D. He was seriously wounded.

Answer 1

【答案】

【1】D

【2】A

【3】C

【4】A

【解析】

试题分析：本文介绍了海豚的特点和对人类的友好帮助，呼吁人们保护海豚。

【1】D细节理解题。根据第一段Their brain is nearly the same size as our own海豚的大脑几乎和人类的一样大，由此可判断，海豚与其他动物最大的不同在于大脑的体积。故选D。

【2】A细节理解题。根据文章第二段第一句Like some animals, dolphins use sound to help them find their way around像其他一些动物一样，海豚用声音辨认道路.。故选A。

【3】C词义猜测题。根据第四段描述的海豚Jack给它遇见的船只带路，除了那艘伤害它的企鹅号。可知海豚对人友好并且很聪明。故选C。

【4】A推理判断题。根据第四段中Jack met every boat in the area and showed it the way.杰克给遇到的每艘船只带路，因此可知在新西兰沿岸的水手寻找杰克是为了让它带路。故选A。