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The green turtle is listed as endangered by the International Union for the Conservation of Nature. Under the U.S. Endangered Species Act of 1973, the green turtle was listed as threatened except for the breeding populations in Florida and on the Pacific coast of Mexico, where it is listed as endangered.

Green turtles continue to be caught for money by humans, and the destruction and loss of nesting and foraging(觅食)sites is a serious problem. Humans have already caused the decrease of large green turtle populations, including those that once nested in Bermuda and Cayman Islands. The situation of green turtle populations is difficult to determine because of our lack of knowledge about their life cycles. The number of nests in Florida appears to be increasing, but we don't know whether this is due to an increase in the number of nests or because we have started to monitor(监控)nesting beaches more closely.

The green turtle is the largest hard­shelled sea turtle. Adults of this species commonly reach 100 cm in length and 150 kg in mass. The average size of a female nesting in Florida is 101.5 cm straight in length, with an average body mass of 136 kg.

Growth rates of green turtles have not been measured under natural conditions. Green turtles grow slowly.

In the southern Bahamas, green turtles grow from 30 to 75 cm in 17 years, and according to Bjorndal and Bolten, growth rates decrease with increasing length. Growth rates measured in green turtles from Florida and Puerto Rico fall within the range of growth rates measured in the southern Bahamas. Based on growth rate studies of wild green turtles, the researchers Balazs, Frazer and Ehrhart estimate the age of sexual maturity(成熟)can range anywhere from 20 to 50 years.

1.The main idea of the passage is to tell us________.

A.something about an endangered animal

B.how green turtles got extinct

C.how heavy a green turtle is

D.how long a green turtle can live

2.Which of the following is NOT a reason why green turtles are endangered?

A.Humans catch them to get profit.

B.They lose their nests.

C.They have fewer places to find food.

D.People like to keep them as pets.

3.According to the passage, the green turtle________.

A.can reach 100 cm in length in 17 years

B.lives in the sea and grows very slowly

C.lives only in Florida and on the Pacific coast of Mexico

D.can grow from 30 to 75 cm in 17 years in southern Florida

4.Why is it hard for us to know the number of green turtles?

A.Because it is difficult for us to be close to them.

B.Because we have limited knowledge about them.

C.Because we haven't measured their growth rates.

D.Because they grow too slowly.

 

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WASHINGTON, Sept. 6 (Xinhua) -- U.S. President Barack Obama on Monday announced a new plan to renew and expand the nation's roads, railways and runways, in a bid (努力) to restart the sluggish economy and to help create jobs.
Obama announced the billion-dollar infrastructure(基础设施) spending program at an event in Milwaukee, Wisconsin, marking the Labor Day holiday in the United States.
The proposal calls for investments over six years, including rebuilding and modernizing 150,000 miles (241,350 kilometers) of roads, 4,000 miles (6,430 kilometers) of railways and 150 miles ( 241 kilometers) of runways.
"It sets up an Infrastructure Bank to leverage(杠杆;利用) federal dollars and focus on the smartest investment. All of this will not only create jobs now, but will make our economy run better over the long haul," Obama said.
"This is a plan that will be fully paid for and will not add to the deficit over time," said Obama.
The U.S. unemployment rate rose to 9.6 percent in August, reflecting business reluctance to hire among uncertain economic prospects, the U.S. Labor Department reported on Friday.
The president admitted that new jobs "have not been coming fast enough" in the United States.
"These years would be some of the most difficult in our history. The problems facing working families are nothing new, but they are more serious than ever. And that makes our cause more urgent than ever," he added.
【小题1】What does the underlined word “sluggish” probably mean?

A.繁荣的B.崩溃的C.疲软的D.行动迅速的
【小题2】What’s the main idea of this passage?
A.The US president launched a new program aiming at improving the nation’s infrastructure.
B.The US unemployment rate rose according to the Labor Department.
C.These years will be the most difficult in the American history.
D.More roads, railways and runways will be rebuilt and modernized.
【小题3】Which of the following will be changed most in length?
A.Roads.B.Railways.C.Runways.D.Highways.

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Who Owns the Moon?

Within the next ten years, the U. S., China, Israel, and a crowd of private companies plan to set up camp on the moon. So if and when they plant a flag, does that give them property rights?

A NASA working group hosted a discussion this week to ask: Who owns the moon? The answer, of course, is no use. The Outer Space Treaty, the international signed by more than 100 countries, states that the moon and other celestial bodies (天体) are the province of all mankind. No doubt that would annoy all of the people throughout the ages, like monks from the Middle Ages, who have tried to claim the moon was theirs.

But ownership is different from property rights. People who rent apartments, for example, don’t own where they live, but they still hold rights. So with all of the upcoming missions (派遣团) to visit the moon and beyond, space industry thought leaders are seriously asking themselves how to deal with a potential land rush.

“ This is a very relevant discussion right now. We’ve got this wave of new lunar missions from around the world,” said William Marshall, a scientist in the small-spacecraft office at NASA, but who spoke this week at an event hosted by NASA’s Co Lab, a collaborative(协力完成的) public-private working group. He was speaking from his personal interest and not on behalf of the agency.

To be sure, the United States aims to send astronauts back to the moon by as early as 2015, in a mission that would include a long-term settlement. China and Israel, among others, are also working on lunar projects. And for the first time, several private groups are building spacecraft to land on the moon in an attempt to win millions of dollars in the Google Lunar X Prize. Some participants say that they plan to gain some property rights in the mission.

1.In the passage the writer seems to be worrying that ________.

A.the US will live on the moon forever

B.the moon will not be able to hold all mankind

C.the potential land rush will become more and more frequent

D.no one can answer the question “ Who owns the moon?”

2.“ The Google Lunar X Prize” aims to ________.

A.encourage private groups to land on the moon

B.help NASA host a discussion about land rush on the moon

C.help some developing countries to complete their lunar projects

D.reward some countries or private groups which haven’t stepped on the moon

3.The underlined word “ that” in the first paragraph refers to ________.

A.the Outer Space Treaty

B.if and when they plant a flag

C.the NASA working group

D.monks from the Middle Ages

4.What is the main idea of the last paragraph?

A.The U. S. astronauts will live on the moon for longer time.

B.Many countries and private groups plan to go to the moon.

C.Why some private groups wish to land on the moon.

D.It is easy to gain some property rights on the moon.

5.We can infer from the passage that ________.

A.it’s a waste of time to work on the lunar project

B.“ The Outer Space Treaty” forbids private groups to land on the moon

C.all mankind has the right to land on the moon

D.whenever you come to the moon, you’ll get some property rights on it

 

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At Yale University, enrollment in basic Chinese in 2005 grew rapidly, and for the first time professors can remember, large numbers of freshmen were arriving with enough knowledge of the Chinese language to start in second- or third-year Chinese language class, rather than basic Chinese.

The American interest in China is not just at the university level. In the 2006 school year, high-school students will be offered an Advanced Placement test, which is one of the national exams American students take for university admission, in Chinese. This is the first time Chinese is offered in the Advanced Placement test, which is usually limited to the most important subjects that high school students take.

What is surprising is that earlier last year, an organization that tracks university students surveyed high schools throughout America, asking if they planned to offer the language courses that prepare students for the language Advanced Placement test. They expected that only a hundred high schools, mostly in California, New York, and a few other places with large immigrant populations, would show interest in each of the new language programs. Although that was true for the courses in Italian, Russian and Japanese, it was not true for the Chinese language course. There were thousands of American high schools that indicated that they planned to build their Chinese programs to levels where students could take the Advanced Placement exam for Chinese language. The demand for courses in Chinese is rising so rapidly that it is rapidly overtaking all other foreign languages except Spanish.

According to the passage many freshmen at Yale University today       .

   A. know enough basic Chinese

   B. needn’t learn Chinese any more

   C. take courses in the Chinese language

   D. go to university to study Chinese

For university entrance, the American high-school students       .

   A. have to learn Chinese B. learn more than one foreign language.

   C. take the Advanced Placement Test  D. used to have a test in Chinese

We can learn from the passage that        .

   A. Chinese will overtake all foreign languages in American high schools

   B. Americans will know more about China and its people

   C. the U.S. government pays much attention to language studies

   D. Chinese may take the place of English in American universities

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