2015年考研英语阅读理解精选20篇(第十五篇)
考研英语中阅读理解是重头戏，所占比例较大，考生在复习提高的过程中需要多付出精力。可是对于阅读理解来说，要提高并不是一蹴而就的事情，阅读能力需要日积月累，才能够提高速度和做题的技巧效率。为此，新东方在线小编为广大考生奉上20篇阅读理解，希望大家通过积累来最终提升综合阅读能力。下面请看2015年考研英语阅读理解精选20篇(第十五篇)
气候变化--终于传来了好消息
CLIMATE science is famously complicated, but one useful number to keep in
mind is “climate sensitivity”. This measures the amount of warming that can
eventually be expected to follow a doubling in the atmospheric concentration of
carbon dioxide. The Intergovernmental Panel on Climate Change, in its most
recent summary of the science behind its predictions, published in 2007,
estimated that, in present conditions, a doubling of CO2 would cause warming of
about 3°C, with uncertainty of about a degree and a half in either direction.
But it also says there is a small probability that the true number is much
higher. Some recent studies have suggested that it could be as high as 10°C.
If that were true, disaster beckons. But a paper published in this week’s
Science, by Andreas Schmittner of Oregon State University, suggests it is not.
In Dr Schmittner’s analysis, the climate is less sensitive to carbon dioxide
than was feared.
Existing studies of climate sensitivity mostly rely on data gathered from
weather stations, which go back to roughly 1850. Dr Schmittner takes a different
approach. His data come from the peak of the most recent ice age, between 19,000
and 23,000 years ago. His group is not the first to use such data (ice cores,
fossils, marine sediments and the like) to probe the climate’s sensitivity to
carbon dioxide. But their paper is the most thorough. Previous attempts had
considered only small regions of the globe. He has compiled enough information
to make a credible stab at recreating the climate of the entire planet.
The result offers that rarest of things in climate science—a bit of good
news. The group’s most likely figure for climate sensitivity is 2.3°C, which is
more than half a degree lower than the consensus figure, with a 66% probability
that it lies between 1.7° and 2.6°C. More importantly, these results suggest an
upper limit for climate sensitivity of around 3.2°C.
Before you take the SUV out for a celebratory spin, though, it is worth
bearing in mind that this is only one study, and, like all such, it has its
flaws. The computer model used is of only middling sophistication, Dr Schmittner
admits. That may be one reason for the narrow range of his team’s results. And
although the study’s geographical coverage is the most comprehensive so far for
work of this type, there are still blank areas—notably in Australia, Central
Asia, South America and the northern Pacific Ocean. Moreover, some sceptics
complain about the way ancient data of this type were used to construct a
different but related piece of climate science: the so-called hockey-stick
model, which suggests that temperatures have risen suddenly since the beginning
of the industrial revolution. It will be interesting to see if such sceptics are
willing to be equally sceptical about ancient data when they support their point
of view.
付出会有回报，提高需要努力，小编希望每一位决定了考研的考生都能够坚定自己的目标，并为实现目标努力奋斗，坚持不懈，只有这样才能收获丰厚的果实。2015年考研圆梦，大家一起努力。
课程推荐：2015 考研英语签约全程班、2015 考研英语签约全程班、2015考研政英签约全程联报班
书籍推荐：(2015)考研英语阅读理解基础进阶88篇、(2015)考研英语分类阅读高分进阶(120篇)、(2015)考研英语阅读理解精读100篇(高分版)
页:
[1]