题目内容

XI'AN - China's conservation work for the endangered crested ibis(朱鹮)is facing new challenges, including an increasing mortality rate due to inbreeding, and the conflict between the need to expand natural habitats and local communities' economic interests, bird experts have warned.
The crested ibis, once widespread in Japan, China, Russia and the Korean Peninsula, almost became extinct in the first half of the 20th century.
Before 1981, when seven crested ibis were accidentally found in Yangxian county, in Northwest China's Shaanxi province, academics thought the species had been extinct in China for almost 17 years.
Due to the huge effort put into species protection since 1981, the number of crested ibis in China has risen to an estimated 1,617, including 997 in the wild, the State Forestry Administration said at a meeting on crested ibis protection in Xi'an on Monday.
However, although the ibis population exceeds 1,000, the birds are still not free from the threat of extinction, said Fang Shengguo, director of the State Conservation Center for Gene Resources of Endangered Wildlife at Zhejiang University.
“Ornithologists used inbreeding in the early stages of protection so that numbers of the precious birds could increase quickly, but that method had consequences,” Fang said.
"Studies have proved that as a result of inbreeding, crested ibis have the lowest genetic diversity of all endangered birds," Fang said.
"It means a high mortality rate and more physical defects for hatched chicks."
“The government should collect genetic information from all crested ibis and establish a genetic database as soon as possible, then design a scientific mating plan for the species,” Fang said.
So far, about 90 percent of crested ibis live in Shaanxi province, and fewer than 140 ibis live in three zoos in other parts of the country, including Beijing Zoo, according to Liu Dongping, an assistant researcher at the National Bird Banding Center of China, which is affiliated to the Chinese Academy of Forestry.
The bird has lost the ability to migrate, he said, adding that if an unexpected natural disaster occurred in Shaanxi province or an infectious disease spread through the area, the ibis population could be greatly reduced.
Experts also warned that the increased population of ibis, whether in the wild or in captivity, requires a larger and more varied natural habitat.
Rampant hunting, the massive loss of habitat caused by deforestation and the overuse of pesticides, which killed aquatic insects on which the ibis feed, are believed to be the main reasons for the sharp reduction in the ibis population before 1981.
So, in 1983, a State-level natural reserve was set up in Shaanxi province to protect the bird. But the struggle for living space between human and animal has never stopped, said Lu Baozhong, deputy director of the Shaanxi Crested Ibis Conservation Station.
"For example, ibis often look for loaches in farmers' rice fields. Sometimes their claws trample the rice seedlings. In another case, villagers discovered some land with abundant mineral resources which happened to be a habitat for ibis," said Lu, who has devoted 30 years to ibis protection.
A long-term win-win solution for ibis and local communities needs to be developed, one that would provide ecological compensation for local residents, Lu said.
【小题1】. What’s the best title for the passage?

A.The Rare Bird in ChinaB.New Problems for the Crested Ibis
C.The Way to Save the Crested IbisD.The Reason for the Crested Ibis’s Extinction
【小题2】  Which of the following statement is TRUE ?
A.The crested ibis is a native of China.
B.Before 1981, the crested ibis was extinct in China.
C.The crested ibis is now free from the threat of extinction.
D.Most of the crested ibis are in Shaanxi province.
【小题3】. Why did the experts adopt the way of inbreeding to protect the crested ibis?
A.To increase the mortality rate.
B.To increase the number of the crested ibis.
C.To get more physical defects for hatched chicks
D.To have the lowest diversity of the endangered bird.
【小题4】. What may be the reason for the reduction in the population of the crested ibis before 1981?
A.inbreedingB.economic development
C.over huntingD.sandstorm
【小题5】. What can we learn from the passage?
A.Due to our great efforts, the crested ibis lives in the wild well.
B.Scientists will choose a better habitat for the crested ibis.
C.The problems of the crested ibis have not been solved now.
D.The government has established a genetic database of the crested ibis.


【小题1】.B
【小题1】.D
【小题1】.B
【小题1】.C
【小题1】.C

解析

练习册系列答案
相关题目

What is your favorite English letter?  Many of you may say Q. Why?  Because
so many of you chat with your friends on QQ. What do you like about QQ?  What do you talk about?  The CCTV reporter,  Miss Wang,  interviews three kids. Let’s listen to what they say.
When do you chat on QQ?  What do you talk about?
 Lin Yuhan,  Xi’an:  On weekends. We talk about homework and chat with each other.
  Tang Xuting,  Shanghai:  At weekends and when I don’t have much homework. We exchange test answers and chat.
Yang Yuhang,  Dalian:  Our class goes online together at 4: 00~6: 00pm on weekends. We complain about homework,  chat and talk about computer games.
  What do you put on your QQ blog(博客)?
  Lin: I put good articles I have found online on my blog. I also write articles myself. They are about funny things that have happened in my class.
 Tang: I put pictures on my blog. Not my own photos,  but pictures from my favorite Japanese cartoons(动画片)like Tennis Prince Conan.
  Yang: I put DV films on my blog. I shoot(拍摄)them during sports meetings and school parties. The most popular one is about a dancing teacher,   he is so funny that everyone watches it.
   How do you like QQ?
 Lin: It’s a good space for us to make a record of our lives of both good times and sad times.
  Tang: My friends and I may not have time to chat at school. But we can do it on QQ. It’s very helpful to our friendships.
  Yang: If you chat with friends on the telephone,  your parents sometimes listen to your conversation. There’s no such problem with QQ. You can relax and talk freely.
【小题1】What does Yang Yuhang talk about on QQ on weekends?
①homework     ②chat
③test answers   ④computer games

A.①②B.②③
C.①②④D.②③④
【小题2】What does Lin Yuhan put on her QQ blog?
A.Some pictures.B.Good articles.
C.DV films.D.Japanese cartoons.
【小题3】Which one is TRUE according to this article?
A.Lin says QQ is very helpful to their friendships.
B.Yang says he can chat freely with many friends and relax on QQ.
C.Tang says QQ is a good space for them to make a record of their lives.
D.Tang says he chats on QQ on weekends though he has lots of homework.

14 days from just £2, 090 pp
Fully inclusive from the UK
Price cover international airfares, departure taxes, fuel charge, local transportation all meals, entrance fees, guides, daily tours and visas for UK citizens.  
Days 1-3: UK-Shanghai
Fly to the great city of Shanghai and in the evening sample traditional shanghai food. Visit the beautiful YU Garden, Old Town. Shanghai Museum, cross the Great Nampa Bridge and tour the Pudong area. Also explore Xintiandi with its 1920’s style Smkomen buildings and end your stay in shanghai with an amazing Huangpu river evening tour.  
Days 4-7: Shanghai-Yangtze River Tour
Fly to Yichang and change (approx: one hour)to board your Yangtze River ship for the next four nights. Enjoy a tour of the three Gorges Dam before sailing on the grand Yangtze River, passing through the impressive Three Gorges. We take a side tripe to the lesser Three Gorges or travel up the Shennong Stream in a peapod boat and enjoy various shore trips along the way.  
Day8: Chongqing—Chengdu
Get off in Chongqing and drive to Chengdu for an overnight stay.  
Day9-10: Chengdu-Xi’an
Visit the famous Panda Reserve to see the lovely animals We then fly to the historic city of Xi’an for two nights stay and enjoy traditional Shuijiao. Next day, explore one of the most important discoveries of the 20th century—the Terracotta Warriors(兵马俑),followed by the ancient City wall and a performance of Tang Dynasty dancing.  
Day11-13: Xi’an-Beijing
Visit little wild goose pagoda and see the ancient objects at the well-known Shanxi provincial museum before walking through the lively militia Quarter to see the Great Mosque. Later fly to Beijing for three nights stay and try Peking Duck. During our stay in Beijing, we stroll through Tiananmen Square to the Forbidden city, the largest and best preserved collection of ancient buildings in china, and visit the summer palace. Next day we take a walk on the Great wall, tour the unique Temple of Heaven and enjoy an attractive Chinese Acrzibatio show.  
Day14: Beijing-UK
Fly back to the UK, arriving home later the same day filled with happy memories.  
【小题1】. The underlined word “sample” in the passage probably means “___________”

A.buyB.reserveC.tasteD.make
【小题2】. The first and last scenic spots to be visited in Xi’an are __________. 
A.the Terracotta Warriors and the Great Mosque
B.the Terracotta Warriors and shanghai provincial Museum
C.little wild goose Pagoda and Great Mosque
D.little wild goose Pagoda and the Muslim Quarter
【小题3】. The ad is mainly intended to ___________. 
A.encourage the British to travel in China
B.attract the British to traditional Chinese food
C.offer service of booking air tickets to tourists
D.provide the British with a better understanding of China.

第三部分:阅读理解(共20小题;每小题2分,满分40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。

On the evening of June 21, 1992, a tall man with brown hair and blue eyes entered the beautiful hall of the Bell Tower Hotel in Xi’an with his bicycle. The hotel workers received him and telephoned the manager, for they had never seen a bicycle in the hotel ball before though they lived in “the kingdom of bicycles”.

Robert Friedlander, an American, arrived in Xi’an on his bicycle trip across Asia which started last December in New Delhi, India.

When he was 11, he read the book Marco Polo and made up his mind to visit the Silk Road. Now, after 44 years, he was on the Silk Road in Xi’an and his early dream were coming true. Robert Friedlander’s next destinations(目的地) were Lanzhou, Dunhuang, Urumqi, etc. He will complete his trip in Pakistan.

1. The best headline (标题) for this newspaper article would be ___________.

A. The Kingdom of Bicycles            B. A Beautiful Hotel in Xi’an

C. Marco Polo and the Silk Road         D. An American Achieving His Aims 

2. The hotel workers told the manager about Friedlander coming to the hotel because ___________.

A. he asked to see the manager          

B. he entered the hall with a bike

C. the manager had to know about all foreign guests

D. the manager knew about his trip and was expecting him

3. Friedlander is visiting the three countries in the following order, _________.

A. China, India, and Pakistan            B. India, China, and Pakistan

C. Pakistan, China, and India            D. China, Pakistan and India

4. What made Friedlander want to come to China?

A. The stories about Marco Polo.         B. The famous sights in Xi’an.

C. His interest in Chinese silk.           D. His childhood dreams about bicycles.

 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网