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  3. Air quality in Britain has improved considerably in the last 30 years. Total emissions of smoke in the air have risen by over 8

Air quality in Britain has improved considerably in the last 30 years. Total emissions of smoke in the air have risen by over 8

admin2010-06-18  98
问题    Air quality in Britain has improved considerably
in the last 30 years. Total emissions of
smoke in the air have risen by over 85 per cent        【1】______
since 1950. The domestic smoking control               【2】______
program has been particularly important in achieving                    
this result. London and other major cities are no      【3】______
longer have the dense smoke-laden "smogs" of the                    
1950s, but in central London winter sunshine has       【4】______
increased about 70 per cent since 1958.                【5】______
   Since 1990, daily air pollution data from the                    
British monitoring network has been made available     【6】______
to the public by the Department of the                              
Environment’s Air Quality Bulletins. These give the                     
concentrations of three main pollutants--ozone, nitrogen         
dioxide and sulfur dioxide -- and grade air quality                    
on a scale between "very weak" and "very               【7】______
good". The information features in television and                    
radio weather reports, appears in many national and    【8】______
local newspapers. Therefore, the data are available    【9】______
on a special free telephone number and on videotext                    
systems.                                                            
   A comprehensive review of the issue of urban                    
air quality was published in January 1992. Three                    
independent committees of which experts have been      【10】______
established to advise on different aspects of the problem,
and will set guidelines and targets for air quality.
The network is also being extended and up-
graded at a cost of ￡ 10 million.
【M7】
选项
答案将weak改为poor或bad。
解析 good的反义词是poor或bad，例如:It’s wiser being good than bad; it’s safer being meek than fierce．行善比做恶明智，温顺比狂暴保险。Solitude is a good place to visit but a poor place to stay．当你偶尔光顾时，独处是一个美妙的境地，但是如果久留，它却是一个糟糕的地方。
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