高中英语 unit3 Under the sea 新人教版选修7

1、成才之路 英语,路漫漫其修远兮 吾将上下而求索,人教版 选修7,Under the sea,Unit 3,Dolphins (海豚) are not fish, but warmblooded 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.

2、 Its brain is nearly the same size as our own, and they live a long timeat 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 re

3、ceive 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 coa

4、st 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 areaex

5、cept for The Penguin,Today, some people continue to kill dolphins, but many countries in the world now protect them and in these places it is against the law to kill them. 文章大意：本文讲述了海豚这种热血动物，除了具有其他动物的特征之外，它还和人类一样有感情,1Dolphins are different from many other animals in that they _. Alive in groups Bhav

6、e large brains Care warmblooded Dhave their own language 答案：B细节理解题。由第一段最后两句“But dolphins are very different from almost all land animals. Its brain is nearly the same size as our own，and they live a long timeat least.”可知正确答案为B,2Which of the following does the dolphin use to help it find its way arou

7、nd? AIts nose.BIts ears. CIts mouth.DIts eyes. 答案：C细节理解题。由第二段最后一句“We now know they do not use their ears to receive these sounds，but the lower part of the mouth，called the jaw.”可知，C项正确,3Why did the sailors off the coast of New Zealand look for Jack? AHe was lonely and liked to be with people. BThey

8、enjoyed playing with him. C. He was seriously wounded. DThey wanted his help. 答案：D推理判断题。由第三段的“In a dangerous part of the sea. in the area and showed it the way.”可推知他们需要Jack为他们带路。故D项正确,4By telling the story of Jack the writer wants to show that _. Adolphins are friendly and clever Bpeople are cruel to