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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
查看习题详情和答案>>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
查看习题详情和答案>>of nurse, companion and security guard, will soon be in the market to look after the growing number of old
people with no one to look after them.
Cameras fixed under the "eyebrows" of the robot enable it to "see" as it moves around in a house. The
images can be sent to the latest mobile phones, which can show the pictures. Wakamaru speaks with either
the voice of a boy or a girl. It is also designed to provide companionship, saying hello to its "papa" when he
comes home. Based on a vocabulary of around 10,000 words, it is the first household robot which is able to
hold simple conversations. It can not only speak, but also understand answers and react accordingly. It will
ask "Are you all right?" if its owner doesn't move for some time. If the answer is no, or there is no answer, it
will telephone preset numbers, send images and work as a speakerphone. It can recognize up to 10 faces and
be set to tell forgetful people when it is time to take medicine, eat and sleep.
However, like most robots, it cannot climb stairs. Mitsubishi developed Wakamaru from robots which have
already been made to go around nuclear power facilities."Looking at the ageing of society and the falling birth
rate we decided that this could work as a business. We want to offer it as a product that helps society,"said the
project chief. The developers plan to sell the robot from April this year at between5,000 and 6,000 pounds.
The life expectancy (寿命) of Japanese women has shot up to almost 85, the highest in the world. At the
same time, large families are being replaced by nuclear families. This has left many Japanese anxious about
their elderly parents. Therefore, the technology has gained nation-wide publicity in Japan.
B. solve the ageing problem
C. tell people the rapid development of technology
D. tell people how to use the robot
B. the robot is likely to have a promising market
C. the robot enables the Japanese to live longer
D. many elderly Japanese are anxious about their future
B. small families without a parent
C. families with children and old people
D. families with parents and their children only
B. Japanese Robot and the Ageing Society
C. Large Market of the New Robot
D. Japan-made Robot Helps the Old
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.
B. reduce
C. disappear
D. remove
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.
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
B. Objective
C. Optimistic
D. Concerned
eat boxes of ice cream, bowls of noodles and plates of meat -- and all the while be losing
weight?
You might hate me, thinking 1 have one of those good metabolisms (新陈代谢) that just
burn up fat when it enters my body. You might wonder if I have an eating disorder. Or maybe
you'd just shrug your shoulders and figure I have a rich fantasy life. You'd be wrong.
For my body to perform such a surprising task, I would have to be a mouse. Not just any
mouse, but one lucky enough to be involved in a new study at Baylor College of Medicine in
Houston.
In the study, after discovering an enzyme (酶) that allows fat to be stored in the body,
scientists fed mice without those enzymes, and found those mice were able to eat far more
food than other mice and still weighed 10 to 15 percent less.
Best of all, the mice without the enzyme were in very good health, were able to produce
baby mice without any problem and generally acted like any other mouse. That's great news
for researchers, who think that scientists may figure out a way to prevent the fat-metabolizing
enzyme in humans as a way to control weight gain. And such a pill would be very exciting for
many struggling to get rid of dangerous extra pounds.
But don't start planning any big dinner just yet: At this point, of course, any pill for humans
is but a twinkle (闪烁) in the eye of every drug company's CEO. More tests are to be conducted,
and eventually humans will be tested. But for now, unfortunately, controlling what you eat is still
the key to losing weight.
B. Burning fat very quickly.
C. Controlling your diet.
D. Having a rich fantasy life.
B. proved that there is a kind of enzyme which can cause weight gain
C. only included mice which didn't have the fat - metabolizing enzyme
D. proved that all mice can control their weight easily
B. Scientists can't find the key to discovering the enzyme.
C. The best way for people to lose weight now is still to control their diet.
D. Drug companies will make a lot of money in the future.
B. eating a healthy diet is a good way to prevent disease
C. the fat -metabolizing enzyme can improve metabolisms
D. the pills that help people control weight gain will be very popular if they are available