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
People who live in heavily industrialized areas do not get as much sunlight as they should. Dust【C1】______over a city at altitud
People who live in heavily industrialized areas do not get as much sunlight as they should. Dust【C1】______over a city at altitud
admin
2020-02-21
5
问题
People who live in heavily industrialized areas do not get as much sunlight as they should. Dust【C1】______over a city at altitudes (海拔) of between 4,000 and 8,000 feet cuts out between 20 and 50 percent of the sunlight and up to 90 percent of the ultraviolet light (紫外线). But dust is not the only thing to【C2】______about. When fuels are burned, whether in a factory, or in a home, or in the engine of a car, CO
2
is given off. CO
2
in the atmosphere acts as a kind of【C3】______around the earth, keeping warms in and so slowly raising the【C4】______of the earth. This could really change the climate all over the world.
Everybody wants to have a car.【C5】______, while they are giving us so much pleasure, cars are also poisoning us. The amount of dangerous substances sent out by a car is quite【C6】______. Did you know, for example, that a hundred cars produce on【C7】______a third of a ton of CO, as well as many other【C8】______substances every day?
Now, more and more people are realizing the importance of clean air. Schools are now teaching about the pollution problems. Scientists and engineers are trying to【C9】______new engines for cars. But what about the millions of cars already in use? Must they all be thrown away? It might be very【C10】______to change them so that they, too, are pollutiorvfree.
A. forge B. screen C. expensive D. floating
E. unfortunately F. average G. poisonous H. develop
I. temperature J. surprising K. overtaking L. essential
M. regulation N. generously O. worry
【C2】
选项
答案
O
解析
此处应为动词,可与about搭配为动词词组。结合上一句,可以推断作者想表达灰尘并不是唯一令人担忧的东西,因此答案为worry。
转载请注明原文地址:https://kaotiyun.com/show/Llp7777K
0
大学英语四级
相关试题推荐
A"memorypill"thatcouldaidexamrevisionandhelptopreventpeopleforgettingimportantanniversariesmaysoonbeavailable
A"memorypill"thatcouldaidexamrevisionandhelptopreventpeopleforgettingimportantanniversariesmaysoonbeavailable
A"memorypill"thatcouldaidexamrevisionandhelptopreventpeopleforgettingimportantanniversariesmaysoonbeavailable
I’musuallyfairlyskepticalaboutanyresearchthatconcludesthatpeopleareeitherhappierorunhappierormoreorlesscerta
I’musuallyfairlyskepticalaboutanyresearchthatconcludesthatpeopleareeitherhappierorunhappierormoreorlesscerta
I’musuallyfairlyskepticalaboutanyresearchthatconcludesthatpeopleareeitherhappierorunhappierormoreorlesscerta
A、Theykillednomorethan50people.B、TheyfiredagainstNATOtroops.C、TheyattackedanairportinAfghanistan.D、Theykilled
随机试题
A.蒙氏结节B.初乳C.浮球感D.Braxton-Hicks收缩E.Hegar征妊娠12~14周起出现的无痛性收缩,称为
呼吸道异物X线征象有
由患者的家长、家属或他人作出求医决定的求医类型是
在运用成本法时,其中最主要的是要注意()。
干式电除尘法的优点是()。
( )是合同的重要组成部分,其内容是说明合同标的物应达到的质量标准及其施工技术要求,也是合同支付的实物依据和计量方法。
所谓国家安全,包括( )。
2014年国务院印发的《社会信用体系建设规划纲要(2014—2020年)》是社会信用体系建设的首部国家级别规划。其中,推进诚信建设的重点领域有()。
(1987年)与两直线及都平行,且过原点的平面方程为____________.
操作员甲和乙录入数据错误概率均为1/1000。为了录入一批重要数据,通常采取甲、乙两人分别独立地录入这批数据,然后由程序对录入数据逐个进行比较,对不一致处再与原数据比较后进行修改,这种录入数据的方式,其错误率估计为(43)。
最新回复
(
0
)