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阅读理解

  Scientists have long understood the key role that oceans play in regulating the Earth's climate.Oceans cover 70 percent of the globe and store a thousand times more heat than the atmosphere does.What's newer is the understanding of how this key component of our climate system responds to global warming.

A brake on global warming-for now

  One of the ocean's most important climate functions is absorbing heat and carbon dioxide(CO2), one of the gases that cause global warming.Acting as a heat sponge(海绵), the oceans have absorbed huge amounts of heat and CO2 in the last forty years.

  Fujita explains that “the oceans are saving us from faster climate change-they are a big flywheel that delays rapid overheating of the earth, putting a brake on the climate system.”

  “That's the good news,” he adds.“The bad news is that the oceans only slow the atmospheric warming.Once the oceans come to balance with a greenhouse-gas warmed earth, the extreme heat will remain in the atmosphere and things will get much hotter.” But where and how the oceans release this accumulated(积累)heat is uncertain.And as the ocean stores heat, fragile underwater ecosystems are struggling.

  The most recent scientific report from the Intergovernmental Panel on Climate Change(IPCC)also notes with concern that the ocean is acidifying because of increased absorption of atmospheric CO2, and thus causing a threat for shell-forming species.Sharp increases in carbon dioxide levels will cause further acidification of the ocean.

Currents distributing heat

  Another important role the oceans play is that of distributor.Oceans deliver heat and life-sustaining nutrients around the globe.Just as blood vessels bring oxygen and nutrients to cells in the human body, the ocean's currents carry oxygen, nutrients and heat throughout the Earth.The ocean distributes 25 to 50 percent of the energy the planet receives from the sun.For example, the Gulf Stream carries heat across the Atlantic.This warm current gives northwestern Europe a milder climate than it would normally have so far north.A change to the ocean's circulation(循环)patterns could throw Europe into a colder period, even as the rest of world experiences warmer temperatures.

(1)

We can infer from the passage that ________.

[  ]

A.

the oceans cause global warming

B.

the oceans stop global warming

C.

the oceans release nutrients and heat

D.

the ocean ecosystems face more dangers

(2)

From the passage we can learn that the ocean's currents ________.

[  ]

A.

produce oxygen and nutrients everywhere

B.

absorb 25~50% of the energy from the sun

C.

distribute heat and nutrients around

D.

change the ocean's circulation patterns

(3)

Which of the following is NOT the result of the ocean absorbing heat and carbon dioxide?

[  ]

A.

It causes further acidification.

B.

It affects shell-forming species.

C.

It makes the atmosphere hotter.

D.

It regulates the Earth's climate.

(4)

This passage mainly talks about ________.

[  ]

A.

the roles of oceans

B.

global warming

C.

ocean currents

D.

carbon dioxide

答案:1.D;2.C;3.C;4.A;
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阅读理解

  Thirteen vehicles lined up last March to race across the Mojave Desert, seeking a million in prize money.To win, they had to finish the 142-mile race in less than 10 hours.Teams and watchers knew there might be no winner at all, because these vehicles were missing a key part-drivers.

  DARPA, the Defense Advanced Research Projects Agency, organized the race as part of a push to develop robotic vehicles for future battlefields.But the Grand Challenge, as it was called, just proved how difficult it is to get a car to speed across an unfamiliar desert without human guidance.One had its brake lock up in the starting area.Another began by throwing itself onto a wall.Another got tied up by bushes near the road after 1.9 miles.

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can do effortlessly whatever tasks living things can

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can take part in a race across 142 miles with a time limit

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can show off their ability to turn themselves upside down

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can move from place to place without being driven by human beings

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In the race, the greatest distance one robotic vehicle covered was ________.

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for a robotic vehicle to finish a 142-mile race without any difficulties

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科目:高中英语 来源:浙江省杭州二中2011-2012学年高一上学期期中考试英语试题 题型:050

阅读理解

  Phone producers show us every year some really superb concept phones and even if 99% of those phones never see the production line, they give us a small glimpse(一瞥)of what the phones will look like in the near future.We’ve made a list of what we think are the coolest concept phones presented in 2010.This is not a top, so the order is random(随机的).Oh, and one more thing, remember, these are concept phones, which means they are not in production and are not for sale, so please don’t ask us where you can get them and what the prices are.

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[  ]

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make advertisements for the new phones

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阅读理解

  Thirteen vehicles(车辆)lined up last March to race across the Mojave Desert, seeking a million in prize money.To win, they had to finish the 142-mile race in less than 10 hours.Teams and watchers knew there might be no winner at all, because these vehicles were missing a key part-drivers.

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raise money for producing more robotic vehicles

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阅读理解

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A fascinating story.

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阅读理解

阅读下列短文,从A、B、C、D四个选项中选出最佳选项。

  Superman, Spider-Man, Batman and Iron Man….There is no shortage of superheroes.You find them in comic books, on the TV and the big screen.

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[  ]

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How Bruce Wayne develops into a superhero.

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How to overcome childhood fears.

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Why superheroes enjoy great popularity in Britain.

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[  ]

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his curiosity about bats

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his childhood fear of bats

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Why does Wayne live like a playboy?

[  ]

A.

He prefers the lifestyle of a playboy.

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He doesn't know how to run a company.

C.

He loves freedom more than anything else.

D.

He needs to disguise his crime fighting activities.

(4)

Which of the following statements is true about Batman?

[  ]

A.

Batman is a born superhero

B.

He has special powers

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The turning point of his life is due to his parents' sudden death

D.

He actually lives the lifestyle of a millionaire playboy

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