2013年全国医学考博英语统一考试真题07

希赛网英语频道为大家整理2012年全国医学博士英语统一考试真题。

Part IV Reading Comprehension (30%)

Passage Four

Despite the numerous warnings about extreme weather, rising sea levels and mass extinctions, one message seems to have got lost in the debate about the impact of climate change. A warmer won ’ t just be inconvenient. Huge swathes（片）of it, including most of Europe, the US and Australia as well as all of Africa and China will actually be uninhabitable一too hot, dry or stormy to sustain a human population. This is no mirage. It could materialize if the world warms by an average of just which some models predict could happen as soon as 2050. This is the world our children and grandchildren are going to have to live in. So what are we going to do about it?

One option is to start planning to move the at-risk human population to parts of the world where it will still be cool and wet. It might seem like a drastic move, but this thought experiment is not about scaremongering （危言耸听）.Every scenario is extrapolated from predictions of the latest climate models, and some

say that may actually turn out to be a conservative estimate.Clearly this glacier-free, decertified world—with its human population packed into high-rise cities closer to the poles—would be a last resort. Aside from anything else, it is far from being the most practical option： any attempt at mass migration is likely to fuel wars, political power struggles and infighting. So what are the alternatives? The most obvious answer is to radically reduce carbon dioxide levels now, by fast-tracking green technologies and urgently implementing energy-efficient measures. But the changes aren’t coming nearly quickly enough and global emissions are still rising. As a result, many scientists are now turning to “ Earth5 s plan B”.

Plan B involves making sure we have large scale geoengineering technologies ready and waiting to either suck CO2 out of the atmosphere or deflect the sun’s heat. Most climate scientists were once firmly against fiddling with the Earth5 s thermostat, fearing that it may make a bad situation even worse, or provide

politicians with an excuse to sit on their hands and do nothing.

Now they reluctantly acknowledge the sad truth that we haven51 managed to reorder the world fast enough to reduce CO2 emissions and that perhaps, given enough funding research and political muscle, we can indeed design, test and regulate geoengineering projects in time to avert the more horrifying conse-

quences of climate change. Whatever we do now is the time to act. The alternative is to plan for a hothouse world that none of us

would recognize as home.

76. To begin with, the author is trying to remind us of .

A. the likelihood of climate change making life inconvenient

B.the warning against worsening climate change

C. the inevitable consequence of global warming

D. the misconception of a warmer world

77. As the thought experiment shows, those at risk from global warming will .

A. live with the temperature raised by an average of

B.have nowhere to go but live in the desert

C. become victims as soon as 2050

D. move closer to the poles

78. It is clear from the passage that a practical approach to global warming is .

A. to reduce massively CO2 emissions

B. to take protective measures by 2050

C. to prepare a blueprint for mass migrations

D. to launch habitual constructions closer to the poles

79. Earth5 s Plan B is ambitious enough .

A. to stop climate scientists making a bad situation even worse

B. to remove the sources of CO2 emissions altogether

C. to regulate geoengineering projects for efficiency

D .to manage the Earth5s thermostat

80. Which of the following statements are the supporters of “Earth’s plan 巳” for?

A. It’s time to go green.

B.Energy-efficient measures must be taken.

C. Mass migration to the poles is inevitable.

D. For the planet it5 s geoengineer or catastrophe.

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