题目列表(包括答案和解析)
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,并在答题卡上将该项涂黑。
WASHINGTON(AP)—Good news for dinosaur fans:There are probably a lot more of them waiting to be discovered.At least,their fossils are.
Peter Dodson of the University of Pennsylvania and Steve Wang of Swarthmore College estimate that 71 percent of all dinosaur genera(种类)—groups of dinosaur species—have yet to be discovered.
“It’s a safe bet that a child born today could expect a very fruitful career in dinosaur paleontology(古生物学),”Dodson said in a statement.
The estimate appears in Tuesday’s issue of Proceedings of the National Academy of Sciences.
Dodson—a professor of anatomy at Penn’s School of Veterinary Medicine and professor at Penn’s Department of Earth and Environmental Sciences—first estimated the potential number of dinosaur genera in 1990 and is revising that upward.
The estimates are based on the rates of discovery—about 10 to 20 annually—and the recent increase in finds of fossils in China,Mongolia and South America.
Dodson suggests that 1,850 genera will eventually be discovered.So far 527 genera have been found.
Fossilization itself is a rare event,they note,and as many as half of the dinosaur genera that ever existed may have left no remains.
“I would never suggest that this prediction.however statistically(统计上地)sound.is the final word on dinosaur diversity,“Dodson added.”My intention is to fuel the discussion using the facts at hand,and this is the best estimate we can make with the data available.”
56.The best title for the passage would be______________.
A.Much more dinosaur once lived on the earth
B.Good news for dinosaur fans
C.A very fruitful career in dinosaur paleontology
D.Dinosaurs remain to be discovered
57.Who made the first estimate about the possible number of dinosaur genera?
A.The author of the passage. B.Steve Wang.
C.Peter Dodson. D.Both B and C.
58.Which of the following statements is NOT mentioned in the passage?
A.The number of dinosaur fans is getting larger and larger.
B.More dinosaur fossils are expected to be found in future.
C.The estimate was based on plenty of facts of dinosaur paleontology.
D.Not all the dinosaur genera left their fossils.
59.It can be inferred from the text that______________.
A.dinosaurs will return to the world once again
B.about 3700 dinosaur genera once lived on the earth
C.only half of the dinosaur fossils have been found so far
D.all dinosaur fossils have been find in China.Mongolia and South America
60.The underlined sentence in the last paragraph most probably means____________.
A.Enough research work has been done on dinosaur diversity
B.it is probable that more information about dinosaur diversity will be found in future
C.the conclusion drawn by Dodson is not exactly right
D.Dodson will continue his research work on dinosaur diversity
C【2011·河南省示范性高中五校联考】
What's black and orange and growing for the first time in decades? India's tiger population! On Monday, officials announced the results of the latest tiger count. The census(统计) totaled 1,706 tigers in forests across the Asian country—about 300 more than four years ago. "These numbers give us hope for the future of tigers in the world," said Jim Leape, international director of the World Wildlife Fund.
A century ago, about 100,000 tigers lived in India's forests. But by 2002, a count showed that there were only 3,600 left. The number dropped to 1,411 in 2007. What caused India's tiger population to shrink so dramatically?
More than anything else, experts say, development has taken a toll. People have moved into tiger territory and destroyed much of the animal's habitat. Today, tigers live on a just small part of the land they occupied 100 years ago.
Illegal hunting has also contributed to the decline. Poachers(盗猎者) can demand high fees for tiger parts, which are a key ingredient in traditional Chinese medicine. The parts from one tiger can sell for tens of thousands of dollars.
India's news is a step in the right direction. But while the number of tigers has increased there in the last four years, the animals' habitat has shrunk. Roads and construction projects have blocked off many tiger corridors—routes used by the big cats to go from one forest to another. "Securing these corridors should be taken up as a priority," says Rajesh Gopal, of the National Tiger Conservation Authority.
Last November, leaders from the 13 countries that are home to wild tigers met in St. Petersburg, Russia, to develop a plan to help the endangered cats. They set a goal to double the world's tiger population by the year 2022. Will we reach that goal? With India's tiger population on the rise and conservationists around the world focused on helping the big cats, it seems it just might happen.
63. The underlined word “shrink” in Paragraph 2 most probably means .
A. develop B. reduce C. disappear D. remove
64. Which is one of the reasons why India's tiger population declines?
A. Some living areas of India's tigers are destroyed by humans.
B. Roads and construction projects have bridged tiger corridors.
C. Some India's tigers have been hunted for to attract visitors.
D. Too many tigers are used in making traditional Chinese medicine.
65. It can be inferred from the passage that _______.
A. 1,411 India’s tigers were killed between 2002 and 2007
B. Rajesh Gopal is in charge of the World Wildlife Fund
C. the world's tiger population will surely be doubled by 2022
D. international efforts are being made to protect India's tigers
66. What is the author’s attitude towards the future of India's tigers?
A. Critical B. Objective C. Optimistic D. Concerned
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