题目内容
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
【小题1】D
【小题2】C
【小题3】A
【小题4】B
【小题5】B