Pollution in Asia is changing global climate patterns by making the chemistry of the atmosphere different, scientists say．
Research published in the Proceedings of the National Academy of Sciences this week shows how increasing pollution creates more intense storms in the north Pacific region, affecting how global temperatures are regulated．
Renyi Zhang and colleagues from the Texas A＆M University studied satellite cloud measurements from 1984 to 2005．They found that the number of a particular type of cloud－deep convective(对流)clouds－had increased by 20 to 50 per cent between 1994 and 2005, compared with the previous decade．
Deep convective clouds play a role in regulating the Earth's temperature．Their formation and duration and the amount of rainfall they produce can be influenced by aerosols(气雾剂)－particles suspended in the atmosphere．The burning of coal results in human-made aerosols such as sulphate and soot．
Zhang found that the activity of the Pacific storm track－a weather phenomenon which plays an important role in regulating the Earth's temperature－is enhanced in the winter months, most likely due to the rise in deep convective clouds due to air pollution in Asia at this time．
According to the study, pollution tends to increase in Asia in winter as coal-burning is still the main source of heat and energy．
Zhang says that further air pollution from Asia, caused by rapid industrialisation and urbanisation, will continue to greatly influence storms over the Pacific, contributing to global warming．
(1)
From the satellite cloud measurements of the scientists we know ________．
[ ]
A．
a particular type of cloud has appeared
B．
the number of a particular type of cloud has risen
C．
changeable weather has appeared
D．
the sky is no longer clear
(2)
The scientists drew the conclusion by ________．
[ ]
A．
observing the nature for years
B．
doing research in the areas concerned
C．
studying the satellite cloud measurements in the past
D．
using information from the Internet
(3)
The increase of storms in Asia is probably due to ________．
[ ]
A．
the increase of deep convective clouds
B．
the fall of the increased deep convective clouds
C．
the large amount of rainfall
D．
the activity of the Pacific storm track
(4)
The best title of the passage should be ________．
[ ]
A．
New Measures on How to Improve the Environment
B．
Asian Air Pollution is Changing the Global Climate
C．
Global Temperature Trend：Past and Future
D．
Why Asian People Burn Coal for Energy
(5)
According to the passage, air pollution in Asia will lead to ________．
