吉林省实验中学2015届高三上学期第五次模拟考试 英语试题（解析版）
第一部 听力（1-20小题）在笔试结束后进行
第二部分 阅读理解(共两节，满分40分)
第一节(共15小题:每小题2分，满分30分)
阅读下列短文，从每题所给的四个选项(A. B. C和D)中，选出最佳选项，并在答题卡上将该项涂黑•
A
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 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.
21. By telling the story of Jack the writer wanted to show that _____.
A. people are cruel to animals B. dolphins are friendly and clever
C. Jack is different from other dolphins D. dolphins should be protected by law
22. Dolphins are different from many other animals in that they _____.
A. live in groups B. have their own language
C. are warm-blooded D. have large brains
