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, 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 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.
小題1:Dolphins are different from many other animals in that they _____.
A．live in groupsB．have large brainsC．a(chǎn)re warm-bloodedD．have their own language
小題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.
小題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.
小題4:By telling the story of Jack, the writer wanted to show that _____.
A．dolphins are friendly and cleverB．people are cruel to animals
C．Jack is different from other dolphins D．dolphins should be protected by law

小題1:B
小題2:C
小題3:D
小題4:A

試題分析：本文介紹了海豚的情況，并舉例說明海豚是人類的朋友。
小題1:細(xì)節(jié)題：由第一段第五句Their brain is nearly the same size as our own,可知海豚與其他動物最大的不同就是他們的腦子和人類的腦子幾乎一樣大，故選B。
小題2:細(xì)節(jié)題。由第一段第六句dolphins use sound to help them find their way around.可知海豚是通過聲音確定方向的，故選C。
小題3:由第三段Jack met every boat in the area and showed it the way.可知海員們尋找Jack的原因是Jack為這些航船在危險航段指明方向，故選D。
小題4:全文都在講海豚的聰明與友好，所以正確答案是A；其他三個選項不能涵蓋全文，只是文章的一個細(xì)節(jié)。
點(diǎn)評：以細(xì)節(jié)題的考查為主，要求考生準(zhǔn)確閱讀文章，在確定考查內(nèi)容所在文章位置的時候，要根據(jù)上下文的語義串聯(lián)來確定答案。
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