3.Last night's meteor(流星) shower left many people in the community dissatisfied and demanding answers.According to Gabe Rothsclild,Emerald Valley's mayor,people gathered in the suburbs of the city,carrying heavy telescopes,expecting to watch the brightly burning meteors passing through the sky.What they found instead was a sky so brightened by the city's lights that it darkened the light of the meteors passing overhead.
"My family was so frustrated,"admitted town resident Duane Cosby,"We wanted to make this an unforgettable family outing,but it turned out to be a huge disappointments."
Astronomers-scientists who study stars and planets--have been complaining about this problem for decades.They say that light pollution prevents them from seeing objects in the sky that they could see quite easily in the past.They call on people and the government to take measures to fight against it.
There is yet a population besides professional and amateur star observers that suffers even more from light pollution.This population consists of birds,bats frogs,snakes,etc.For example,outdoor lighting severely affects migrating(迁徙的)birds.According to the International Dark-Sky Association."100million birds a year throughout North America die in crashes with lighted buildings and towers."
Countless more animals casualties(伤亡)result from the use of artificial lighting.Clearly,people enjoy the benefits of lighting their evenings,but some scientists think it can be harmful for humans,too.They worry that exposure to light while sleeping can increase person's chances of getting cancer.
Emerald Valley is only one community that is becoming aware of the negative effects of hight pollution.For years,Flagstaff,Arizona,has enforced lighting regulations in its city in order to assist astronomers at the Lowell Observatory.Similar efforts have been made worldwide,and a movement is underway to remind us to turn off lights when we are not using them,so that other creatures can share the night.
41.It happened last night thatA
A.the city's lights affected the meteor watching B.the meteors flew past before being noticed
C.the city light show attracted many people D.the meteor watching ended up a social outing
42.What do the astronomers complain about?C
A.Meteor showers occur less often than before
B.Their observation equipment is in poor repair
C.Light pollution has remained unsolved for years
D.Their eyesight is failing due to artificial lighting
43.What the author concerned about according to Paragraph 4?D
A.Birds may take other migration paths
B.Animal'living habits may change suddenly
C.Varieties of animals will become sharply reduced
D.Animals'survival is threatened by outdoor lighting
44.Lighting regulations in Flagstaff,Arizona are put into effect toB
A.Lessen the chance of getting cancer
B.create an ideal observation condition
C.ensure citizens a good sleep at night
D.enable all creatures to live in harmony
45.What message does the author most want to give us?C
A.Saving wildlife is saving ourselves
B.Great efforts should be made to save energy
C.Human activities should be environmentally friendly
D.New equipment should be introduced for space study.
分析 本文是一篇议论文,文章是由一个事例进而引发出要讨论的话题.作者在文章中表示许多人想在晚上看流星雨,但结果由于光线太亮,而影响了他们的观看效果,由此引发了人们对光污染的思考.
解答 41.A 推理判断题.根据题干关键词last night快速定位第一段.根据a sky so brightened by the city's lights that it darkened the light of the meteors passing overhead可知"城市的夜空被灯点缀的是如此明亮以至于头上飞过的流星的光亮暗淡了,因此影响了人们观星".故选A.
42.C 推理判断题.根据题干关键词astronomers快速定位第三段.根据they say that light pollution prevents them from seeing objects …they could see quite easily in the past.可以推断光污染问题一直没有得到解决,这才是他们所抱怨的.故选C.
43.D 推理判断题.根据题干快速定位第四段.根据There is yet a population besides professional and amateur star observers that suffers even more from light pollution.可知讲述了灯光污染对鸟类、蝙蝠、青蛙、蛇等动物的影响,尤其是其严重影响了鸟类的迁徙,因此可知讲述的是动物的生存受到户外灯光的影响,故选D.
44.B 推理判断题.由题干中的大写Flagstaff,Arizona可快速定位文章最后一段,根据Flagstaff,Arizona,has enforced lighting regulations in its city in order to assist astronomers at the Lowell Observatory可知推行此规定的目的是为了让天文学家能更好的观察.故选B.
45.C 写作意图题.文章主要讲的是灯光污染给人类和其它生物带来的影响,而灯光的直接造成原因就是人类本身,因此作者写本文主要是要告知人们人类的活动应该要注意环保,减少光污染.故选C.
点评 做阅读理解时要快速的浏览全文,把握文章主旨大意,带着问题回到原文,寻找细节或概括相应的答案,最后要理清作者写作思路.