A喜欢英语的理由
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 u sound to help them find their way around. They also make the sounds to talk to each other and to help them find food. We now know they do not u their ears to receive the sounds, but the lower part of the mouth, called the jaw.
Strangely, dolphins em 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 a 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 pasnger on a boat called The Penguin shot and wounded Jack. He recovered and for nine years more co
ntinued 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 the 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 u to help it find its way around?
A. Its no. 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 riously 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
5. What can we inter from the passage?
轴对称图案
A. Dolphins can communicate with men in their own language.古风网名男生
B. Dolphins can guide all ships through the a.
C. Many countries have made laws to protect dolphins.
D. Dolphins are clever than human beings.
求最小公倍数
1
B.
The Zhoukoudian Beijing Man Site is one of the most important world heritage sites in China．Since the discovery, which changed China's knowledge of its history, was made in the 1920s, Zhoukoudian has become an important place for archaeologists from all over the world．At the site in the south-west suburb of Beijing, there is, for example, the earliest evidence of the u of fire by humans．It has also been proved that people lived there continuously between 500,000 and 10,000 years ago．
电工仪表与测量 Today, however, Zhoukoudian is in rious danger．Parts of the cave have been badly affected by rain and exposure to the air．Some areas are almost completely covered in weeds, causing rious damage．Pollution from nearby cement factories has also contributed to the problem．
The site is extremely expensive to maintain and it will cost between three and five million yuan to repair it．At the moment, visitors are not allowed to visit the caves．
Zhoukoudian is on the World Cultural Heritage List, organized by UNESCO, the United Nations Educational, Scientific and Cultural Organization．The list is constantly checked．Any site which is riously damaged or which is not properly protected is an endangered heritage, and UNESCO is very quick to do something about situations like this．They have recommended that the site be clod and repaired．If nothing is done to repair it, it could be removed from the list．来学校的英文
This is a very rious matter and the Chine Academy of Sciences is trying to rai public awareness about it．They have suggested that the general public be encouraged to help with the problem．A professor at the Academy has propod that a fund be established to rai money．合肥有哪些大学
Dr Zhu Ming of the Academy said, " We have requested that the government get involved, but we also need assistance from ordinary people．They can help by contributi证券交易规则
ng to the cost of repairing the caves．They are a precious part of our cultural heritage-it is of vital importance that we do something．If not, it will be a catastrophe．"
1. Why does Zhoukoudian have become an important place for archaeologist?
A．Becau the site tells some information about how man lived in the old times．
B．Becau it has brought in lots of money as a place of interest．
