题目内容
3."City trees,popularly thought to remove pollutants (污染物)and improve urban life,may also increase the amount of polluted air that people breathe,"says the UK body which gives independent health guidance to national and local government."Leaves and branches slow airflow,causing pollutants to settle.They may also act as sinks for chemicals that may have direct or indirect effects on air quality.Air quality under trees may deteriorate at street level near vehicles,"says the National Institute for Health and Care Excellence ( NICE) in new draft guidance for local government to fight against air pollution.
NICE does not recommend the government cut down trees in leafy areas to meet pollution limits,but urges planners,local authorities and developers to take into account the bad effects that trees can have on air quality if badly sited or unmanaged.
"It is not always true that trees reduce air pollution.Their effect is dependent on factors including species,time of year and wind direction."it says.
The guidelines also question the unintended consequences of other measures often taken by cities to improve people's quality of life."Road humps(隆起)aimed at slowing traffic and noise barriers alongside busy roads can both increase air pollution,"says NICE.
It proposes(建议)the government consider air pollution at every stage of the planning process.This could extend to where new housing is sited and recommending that developers build new houses with the living room situated furthest away from roads.
"Schools and nurseries should be sited away from main roads,"says NICE.But it also ants to see drivers educated on how to reduce pollution.This could include switching the ngine off when they are dropping people off,or making deliveries,and avoiding rapid ccelerations(加速)and decelerations.
According to the guidelines,action is needed both to insure vehicles on the road are clean nd that there are fewer of them.
32.What does the underlined word"deteriorate"in Paragraph 2probably mean?A
A.worsen
B.improve
C.end
D.exist
33.According to the text,the effect of trees on air quality might be connected withD.
A.the size of trees
B.the speed of wind
C.the growth rate of trees
D.the types of trees
34.What can we infer from the text?D
A.Tall trees are beneficial to air quality.
C.The number of trees might affect air quality.
B.New houses should be built away from trees.
D.Unsteady driving might contribute to pollution.
35.What is mainly talked about in the text?C
A.People should plant fewer trees in the city.
B.Polluted air is mainly caused by city trees.
C.Trees may increase air pollution on city streets.
D.More work should be done to prevent air pollution.
分析 文章介绍了树在给我们提供生活质量的同时,也给我们带来的空气污染.
解答 ADDC
32.A 猜测词意题.根据They may also act as sinks for chemicals that may have direct or indirect effects on air quality.可知,植物也会积聚一些对空气质量有直接或间接影响的化学物质,树下的空气会减低到街上有机动车的层次,所以此处的deteriorate的意思是使…恶化,故选A.
33.D 细节题.根据Their effect is dependent on factors including species,time of year and wind direction."it says.可知,树的影响因素包括树种,时间和风向,故选D.
34.D 细节题.根据Road humps(隆起)aimed at slowing traffic and noise barriers alongside busy roads can both increase air pollution可知,道路的不平整也会增加空气的污染,故选D.
35.C 主旨大意题.根据全文尤其是第一段的介绍可知,树也会给空气带来污染,故选C.
点评 考查学生的细节理解和推理判断能力.做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确选择.在做推理判断题时不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.
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