首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automob
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automob
admin
2019-05-15
34
问题
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automobile traffic. At present, we realize that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the east of the United States and brought health warnings in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be infected by air pollution. Some scientists consider that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels (coal and oil) is creating a " greenhouse effect" —conserving heat reflected from the earth and raising the world’ s average temperature. If this view is correct and the world’ s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be in water.
Another view, less widely held, is that increasing particular matter in the atmosphere is blocking sunlight and lowering the earth’ s temperature-—a result that would be equally disastrous. A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. Today we do not know for sure that either of these conditions will happen (though one recent government report drafted by experts in the field concluded that the greenhouse effect is very possible). Perhaps, if we are lucky enough, the two tendencies will
offset
each other and the world’ s temperature will stay about the same as it is now.
As pointed out at the beginning of the passage, people used to think that air pollution______.
选项
A、caused widespread damage in the countryside
B、affected the entire eastern half of the United States
C、had damaging effect on health
D、existed merely in urban and industrial areas
答案
D
解析
细节题。根据文章第一段第一句可知,以前人们认为,空气污染仅仅影响紧靠着有工厂或交通拥挤的大城市的地区,选项D(只存在于城市和工业区)正确。选项A(在农村造成大面积的损害)文中未提及。根据第一段第三句可知,重污染天气曾多次笼罩美国东部农村,选项B(影响美国东半部地区)范围过大且与题干不符。选项C(损害健康)与题于不符。故本题选D。
转载请注明原文地址:https://jikaoti.com/ti/vCDYFFFM
0
成人本科学位英语
相关试题推荐
OnNewYear’sEve,thecityholdsanoutdoor______whichattractsacrowdofamillionormorepeople.
Doyouknowinsurance(保险)?Buyinginsuranceisameansbywhichpeoplecanprotectthemselves【C1】______largelosses.Protection
Onceuponatimeapoorfarmertakingasackofwheattothemilldidnotknowwhattodowhenitslippedfromhishorseandfel
Myfatherwasaskedto______theNewYorkoffice.
Ayoungster’ssocialdevelopmenthasaprofoundeffectonhisacademicprogress.Kidswhohavetroublegettingalongwiththeir
Studythefollowingcartooncarefullyandwriteanessayonit.Inyouressay,youshould(1)describethecartoonbriefly:(2)a
Whatexactlyisalie?Isitanythingwesaywhichweknowisuntrue?Orisitsomethingmorethanthat?Forexample,supposea
Hewaswriting________theglasssuddenlyfellonthefloor.
Acomposer’sguildisplanningitsspringconcert,andtenpieceshavebeensubmittedforconsideration.Thedirectorofthegui
Inaseriesofraces,10toycarsareraced,2carsatatime.Ifeachcarmustraceeachoftheothercarsexactlytwice,howm
随机试题
一线单位的HSE组织为HSE管理委员会,由()任主任。
企业发展型战略
Ⅳ型高脂血症的血脂变化为
A.羊角B.鸡眼C.羊肚子D.鸡爪形E.狮子头冬虫夏草药材的子实体顶端膨大部分称为
关于面神经麻痹的叙述,哪项是错误的()
我们所追求的增长是数量和质量的统一,其标志是()。
我国目前实行增值税采用的类型是( )。
成为抗日战争取得完全胜利的重要标志的是()。
设an(x—1)n在x=一1处收敛,则此级数在x=2处().
Accordingtothepassage,whendidHerakleionandEasternCanopusdisappear?Accordingtotheauthor,thefortunesofHerakleio
最新回复
(
0
)