Dolphins (海豚) are not fish, but warm-blooded animals. They live in groups, and speak to each other in their own language. In this 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, dolpins use sound to help them find their way around. They also make 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. are warm-blooded B. have large brains

C. live in groups e D. have their own languag

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

A. Its nose B. Its mouth

C. Its eyes. D. Its ears..

3.Why did the sailors off the coast of New Zealand look for Jack?

A. He was seriously wounded.

B. They enjoyed playing with him.

C. They wanted his help

D. He was lonely and liked to be with people.

4.By telling the story of Jack the writer wanted to show that _____.

A. Jack is different from other dolphins

B. people are cruel to animals

C. dolphins are friendly and clever

D. dolphins should be protected by law

Can dolphins talk? Maybe they can’t talk with words, but they talk with sounds. They show their feelings with sounds.
Dolphins travel in a group. We call a group of fish a “school”. They don’t study, but they travel together.
Dolphins are mammals（哺乳动物）, not fish, but they swim together in a school. Dolphins talk to the other dolphins in the school. They give information. They tell when they are happy or sad or afraid. They say“welcome”when a dolphin comes back to the school. They talk when they play.
They make a few sounds above water. They make many more sounds under water. People can’t hear these sounds because they are very, very high. Scientists make tapes of the sounds and study them.
Sometimes people catch a dolphin for a large aquarium.(An aquarium is a zoo for fish.) People can watch the dolphins in a show. Dolphins don’t like to be away from their school in an aquarium. They are sad and lonely.
There are many stories about dolphins. They help people. Sometimes they save somebody’s life. Dolphin meat is good, but people don’t like to kill them. They say that dolphins bring good luck. Many people believe this.
【小题1】A school of dolphins means_____.

Can dolphins talk? Maybe they can’t talk with words, but they talk with sounds. They show their feelings with sounds.

Dolphins travel in a group. We call a group of fish a “school”. They don’t study, but they travel together.

Dolphins are mammals（哺乳动物）, not fish, but they swim together in a school. Dolphins talk to the other dolphins in the school. They give information. They tell when they are happy or sad or afraid. They say“welcome”when a dolphin comes back to the school. They talk when they play.

They make a few sounds above water. They make many more sounds under water. People can’t hear these sounds because they are very, very high. Scientists make tapes of the sounds and study them.

Sometimes people catch a dolphin for a large aquarium.(An aquarium is a zoo for fish.) People can watch the dolphins in a show. Dolphins don’t like to be away from their school in an aquarium. They are sad and lonely.

There are many stories about dolphins. They help people. Sometimes they save somebody’s life. Dolphin meat is good, but people don’t like to kill them. They say that dolphins bring good luck. Many people believe this.

1.A school of dolphins means_____.

A．a zoo for dolphins                       B．a show by dolphins

C．a group of dolphins                      D．a library of dolphins

2. A dolphin feels _____in an aquarium.

A．afraid

B．happy with people watching them

C．lucky

D．sad and lonely

3.Which sentence is true?

A．Dolphins talk with words.

B．Dolphins always bring good luck.

C．Dolphins make more sounds above water.

D．Dolphins can’t breathe（呼吸） under the water.

4.People can’t hear the dolphins’ sounds because they are         .

A．low              B．high              C．soft              D．quiet

5.From the passage we know_____.

A．Dolphins travel together.

B．Dolphins talk with words when they play.

C．Dolphins like to live in aquariums.

D．All people want to catch dolphins and eat them.

Can dolphins talk? Maybe they can't talk with words，but they talk with sounds．

Dolphins travel in a group．We call a group of fish a “school”．They don't study but they travel together．Dolphins are not fish，but they swim together in a school．Dolphins talk to other dolphins in the school．They give information．They tell when they are happy or sad or afraid．They say “welcome” when a dolphin comes back to the school．They talk when they play．

They make a few s6unds above water．They make many more sounds under water．However，people can't hear these sounds．Scientists make tapes of the sounds and study them．

Sometimes people catch a dolphin for a large aquarium．People watch the dolphins in a show．Dolphins don't like to．be away from their school．In the aquarium they are sad and lonely．There are many stories about dolphins．They can help people．Sometimes they save somebody's life．Dolphin meat is good but people don't like to kill them．They say that dolphins bring good luck．Many people believe this．

1．Dolphins can talk with ________．

A．sounds                B．words                  C．1anguage

2．Dolphins ________ be in their school．

A．don't like to          B．like to                  C．dislike

3．Dolphins always bring ________．

A．sadness               B．bad luck               C．good luck

4．Dolphins make ________ sounds above water．

A．many                   B．a few                   C．much

5．Which of the following is TRUE?

A．Dolphin meat is good，so people like to kill them．

B．Sometimes dolphins save somebody's life．

C．People can hear these sounds from under water．