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

阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。

  Dolphins 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 other animals, dolphins 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 19^th 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 (伤害) 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 large brains

   C. are warm-blooded                                  D. have their own language

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

   A. Its nose.              B. Its ears.                  C. Its mouth.                 D. Its eyes.

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

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

   B. They enjoyed playing with him.

   C. He was seriously wounded.                     D. They wanted his help.

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

   A. dolphins are friendly and clever               B. People are cruel to animals

   C. Jack is different from other dolphins        D. dolphins should be protected by law

Do you know that women’s brains are smaller than men’s? Normally the women’s brain weighs 10% less than men’s. Since research has shown that the bigger the brain, the cleverer the animal, men must be more intelligent（聪明的） than women. Right? Wrong. Men and women always score similarly on intelligence tests, despite the difference in brain size. Why? After years of study, researchers have concluded that it’s what’s inside that matters, not just the size of the brain. The brain is made up of “grey matter” and “white matter”. While men have more of the white matter, the amount（数量）of “thinking” brain is almost the same in both men and women.
It has been suggested that smaller brain appears to work faster, perhaps because the two sides of the brain are better connected in women. This means that little girls may learn to speak earlier, and that women can understand sorts of different information at the same time. When it comes to talking to the boss on the phone, cooking dinner and keeping an eye on the baby all at the same time, it’s women who come out on top every time.
There are other important differences between two sexes（性别）. As white matter is the key to spatial（空间的）tasks, men know better where things are in relation to other things. “A great footballer always knows where he is in relation to the other players, and he knows where to go,” says one researcher. That may explain one of life’s great mysteries: why men refuse to ask for directions … and women often need to!
The differences begin when fetuses（胎儿）are about nine weeks old, which can be seen in the action of children when they are very young. A boy would try to climb a barrier before him or push it down while a girl would ask for help from others. These brain differences also explain the fact that more men take up jobs that require good spatial skills, while more women speech skills. It may all go back to our ancestors, among whom women needed speech skills to take care of their babies and men needed spatial skills to hunt, according to one research.
【小题1】Which of the following is TRUE according to Paragraph 1?