题目内容
15.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 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 1871to 1903Jack met every boat in the area and showed it the way.Then in 1903a 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.
24.Dolphins are different from many other animals in that theyD.
A.live in groups
B.have their own language
C.are warm-blooded
D.have large brains
25.Which of the following does the dolphin use to help it find its way around?A
A.Its jaw.
B.Its ears
C.Its nose.
D.Its eyes.
26.By telling the story of Jack the writer wanted to show thatC.
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
27.Why did the sailors off the coast of New Zealand look for Jack?A
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.
分析 本文介绍了海豚的情况,文中详细介绍了海豚的生活习性及其他的情况,并举例说明海豚是人类的朋友.
解答 24.D.细节理解题.由第一段第五句Their brain is nearly the same size as our own,可知海豚与其他动物最大的不同就是他们的脑子和人类的脑子几乎一样大,故选D.
25.A.细节理解题.由第一段第六句dolphins use sound to help them find their way around.可知海豚是通过声音确定方向的,故选A.
26.C.推理判断题.细节理解题.根据文章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可知全文都在讲海豚的聪明与友好,故选C.
27.A.推理判断题.由第三段Jack met every boat in the area and showed it the way.可知海员们寻找Jack的原因是Jack为这些航船在危险航段指明方向,故选A.
点评 考察学生的细节理解和推理判断能力,做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确的选择.在做推理判断题不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.
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