Global climate change, often seen as a
process stretching over thousands of years, could in fact occur abruptly and
unexpectedly-quickly pushing up temperatures by as much as 18 degrees Fahrenheit
and wreaking havoc(大破坏，浩劫) on human society, scientists warned on
Wednesday.
"Climate change is not always smooth. Sometimes it is
abrupt," said Richard Alley, a climate expert at Pennsylvania State University
and lead author of a new National Academy of Sciences report on the threat of
rapid climatic shifts.
"If you have a very large, abrupt change,
a lot of people and a lot of ecosystems are going to notice," he said．"The
bigger and faster it is, the harder it will be to deal with."
The new National Academy of Sciences report, released this week, warns
that gradual global warming coupled with other human impacts on the envir
A. sudden world climate change
B. gradual global warming
C. long-term influence of climate shift
D. political havoc on human society
更多"Passage Four
Global clima"的相关试题:
[单项选择] Passage Four
Global climate change, often seen as a
process stretching over thousands of years, could in fact occur abruptly and
unexpectedly-quickly pushing up temperatures by as much as 18 degrees Fahrenheit
and wreaking havoc(大破坏，浩劫) on human society, scientists warned on
Wednesday.
"Climate change is not always smooth. Sometimes it is
abrupt," said Richard Alley, a climate expert at Pennsylvania State University
and lead author of a new National Academy of Sciences report on the threat of
rapid climatic shifts.
"If you have a very large, abrupt change,
a lot of people and a lot of ecosystems are going to notice," he said．"The
bigger and faster it is, the harder it will be to deal with."
The new National Academy of Sciences report, released this week, warns
that gradual global warming coupled with other human impacts on the envir
A. geological shifts
B. human impacts on the environment
C. natural disasters
D. long-term droughts
[单项选择] Passage One
Climate scientists need to swallow
their mistrusts and share their data and working methods with their critics. So
concludes an inquiry by British members of parliament into the "climategate"
affair, in which damaging emails were copied from a computer server at the
University of East Anglia in Norwich, UK, and published on the Internet. But,
unexpectedly, the House of Commons Science and Technology Committee has placed
more blame on the university than on the scientists at its Climatic Research
Unit (CRU), whose emails were stolen, and the unit’s director Phil
Jones.
This verdict puts the official university inquiry
launched last December in a strange position. Vice-chancellor Edward Acton asked
the inquiry to report on possible misdeeds at CRU. Now MPs suggest that the
university itself may be at least as much to blame. The M
A. to share their information with the public
B. to take more responsibility for the affair
C. to be open to their critics about their date and approaches
D. to examine the computer server at the university of east Anglia in Norwich
[单项选择] Passage 1
The climate of Earth is changing.
Climatologists are confident that over the past century, the global average
surface temperature has increased by about half a degree Celsius. This warming
is thought to be at least partly the result of human activities, such as the
burning of fossil fuels and the clearing of forests for agriculture. As the
global population grows and national economies expand, the global average
temperature is expected to continue increasing by an additional 1.0℃ to 3.5℃ by
the year 2100.
Climate change is one of the most important
environmental issues facing human- kind. Understanding the potential impacts of
climate change for natural ecosystems is essential if we are going to manage our
environment to minimize the negative consequences of climate change and maximize
the opportunities that it may offer. Beca
A. The burning of fuels such as coal or oil.
B. The clearing of forests.
C. The cultivation of farmland,
D. The negative consequences of human activities.
[单项选择] Passage Three
In the world of climate change, it is
in the Earth’s Cold regions where trends can most easily be seen. The
cryosphere, where water is found in solid form, is among the most sensitive
regions to temperature change.
The sensitivity of ice and snow
to temperature changes is an early indicator of even relatively small
differences, says University of Colorado at Boulder senior researcher Richard
Armstrong. He has found that today’s receding and thinning sea ice, mountain
glacier mass losses, decreasing snow extent, melting permafrost (永久冻土), and
rising sea level are all consistent with warming.
Global mean
temperatures have risen one degree Fahrenheit over the past 100 years, with more
than half of the increase occurring in the last 25 years, observes Armstrong who
is affiliated with the National Snow and Ice Data Center headq
A. in the oceans
B. in icy and snowy regions
C. on high mountains
D. in the south hemisphere
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