题目内容

【题目】The lake is __________ with fish.

What a beautiful scene !

A. living

B. alive

C. live

D. lively

【答案】B

【解析】句意:湖里满是游来游去的鱼。多么美的景色啊! be alive with“充满(活的或动的东西)”,符合句意。

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【题目】 Apparently everyone knows that global warming only makes climate more extreme. A hot, dry summer has caused another flood of such claims. And one of the players that benefit the most from this story is the media: the idea of “extreme” climate simply makes for more exciting news.

Consider Paul Krugman writing breathlessly in The New York Times about the “rising incidence of extreme events.” He claims that global warming caused the current drought in America’s Midwest, and that supposedly record-high corn prices could cause a global food crisis(危机)。

But the United Nations’s latest assessment tells us precisely the opposite—there has an overall slight tendency toward less dryness in North America. Moreover, there is no way that Krugman could have identified this drought as being caused by global warming without a time machine since climate models estimate that such detection will be possible by 2048, at the earliest.

And, fortunately, this year’s drought appears unlikely to cause a food crisis, as global rice and wheat supplies are plentiful. Moreover, Krugman overlooks inflation(通货膨胀):Prices have increased six-fold since 1969.So, the inflation-adjusted price of corn was higher throughout most of the 1970s.

Finally, Krugman forgets that concerns about global warming are the main reason that corn prices have skyrocketed since 2005.Nowadays 40 percent of corn grown in the United States is used to produce ethanol(乙醇),which raises the price of corn –at the expense of many of the world’s poorest people.

Bill Mickbben similarly worries in The Guardian About the Midwest drought and corn prices.He confidently tells us that fierce wildfires from New Mexico and Colorado to Siberia are “exactly” what the early stages of global warming look like.

In fact, the latest study on global wildfire suggests that fire incidence has declined over the past 70 years and is now close to its preindustrial level.

When well—meaning campaigners want us to pay attention to global warming, they often end up making overstatements. And exaggerated(夸张的) claims merely fuel public distrust and unconcern. That is unfortunate, because global warming is a real problem, and we do need to address it.

【1】In what way do the media benefit from extreme weather?

A. They can give voice to different views.

B. They can make themselves better known.

C. They can choose from a greater variety of topics.

D. They can attract people’s attention to their reports.

【2】 What is the author’s comment on Krugman’s claim about the current drought in America’s Midwest?

A. It will eventually get proof in 2048.

B. It is based on an erroneous climate model.

C. So far there is no way to prove its validity.

D. A time machine is needed to tell if it is true.

【3】What is the chief reason for the rise in corn prices according to the author?

A. Inflation rates have been skyrocketing since the 1970s.

B. A considerable part of corn is used to produce green fuel.

C. Climate change has caused corn supply to drop markedly.

D. Demand for food has been rising in the developing countries.

【4】 What does the author think of the exaggerated claims in the media about global warming?

A. They lead to public distrust about science.

B. They create confusion about climate change,

C. They are strategies to raise public awareness.

D. They do a disservice to addressing the problem.

【题目】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 oceans’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), oceans have absorbed huge amounts of heat and CO2 in the last forty years.

Fujita explains that "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 oceans only slow the atmospheric warming. Once 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 oceans release this accumulated (积累的) heat is uncertain. And as oceans store heat, fragile underwater ecosystems are struggling.

The most recent scientific report from the Intergovernmental Panel on Climate Change (IPCC) also notes with concern that oceans are 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 oceans.

Currents distributing heat

Another important role 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, oceans’ currents carry oxygen, nutrients and heat throughout the Earth. Oceans distribute 25 percent 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 oceans’ circulation (循环) patterns could throw Europe into a colder period, even as the rest of world experiences warmer temperatures.

1We can infer from the passage that .

A.oceans cause global warming

B.oceans stop global warming

C.oceans release nutrients and heat

D.ocean ecosystems face more dangers

2From the passage we can learn that oceans’ currents .

A.produce oxygen and nutrients everywhere

B.absorb 25% to 50% of the energy from the sun

C.distribute heat and nutrients around the globe

D.change oceans’ circulation patterns

3Which of the following is NOT the result of oceans 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.

4This passage mainly talks about .

A.the roles of oceans B.global warming

C.ocean currents D.carbon dioxide

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