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
In terms of the evolution of life on Earth, human beings have just arrived. 【C1】______ their short time on Earth, however, peopl
In terms of the evolution of life on Earth, human beings have just arrived. 【C1】______ their short time on Earth, however, peopl
admin
2010-06-26
101
问题
In terms of the evolution of life on Earth, human beings have just arrived. 【C1】______ their short time on Earth, however, people have brought about enormous changes to the surface of the planet—changes far out of【C2】______to the interval of time they have【C3】______ it.
With the【C4】______ of intelligence and manual skill, people have found ways to use plant and animal resources, mineral ores, fuels, and so on. As the number of people on Earth increases, it becomes increasingly difficult for the population to survive【C5】______ the resources of the land. The amount of land is limited. Although agricultural production can be increased by use of【C6】______such as tractors and the addition of fertilizer, the land【C7】______can produce only so much food and no more. As the human population grows, people【C8】______ more.
People are only a very small 【C9】______of all the living things on the planet. Yet their numbers create a 【C10】______ on resources that can’t be 【C11】______. For example, the amount of water on Earth is limited; this water is 【C12】______ through natural processes. However, the natural processes for 【C13】______ water can clean only a certain amount of water.【C14】______, a limited amount of petroleum can be found under the Earth’s surface.
All natural systems tend toward 【C15】______ among opposing factors or forces. Human activities can cause or 【C16】______ permanent changes in natural systems. The【C17】______ smoke from thousands of factories has caused enormous air pollution. Cleaning this smoke has【C18】______ the protective ability of natural processes. The forests cannot clean the air fast enough. The twentieth century began with powerful countries competing to take【C19】______ of the Earth. As an outcome of their hunger, the Earth was abused. Now that people are no longer【C20】______ of the causes of the sickness of our planet, they seek ways to rescue the Earth.
【C12】
选项
A、produced
B、circulated
C、cleaned
D、reduced
答案
C
解析
动词辨析题。句意为:地球上的水量是有限的,这些水通过自然作用得到净化。同时下句中也出现了clean一词,所以[C]cleaned是答案。
转载请注明原文地址:https://kaotiyun.com/show/G21K777K
0
专业英语四级
相关试题推荐
Thousandsofpeopleturnoutintostreetsto______againsttheprojectputforwardbythelocalauthorities.
Revolutionmeans______theproductiveforces.
Theevolutionofhumanbeingscannotbethoughtofas______inashortperiodoftime.
Withthefilmsprevalentacrossthewholeworld,however,mostcriticalplotpointsinHarryPotterandtheSorcerer’sStonecam
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmunizedfrombirthagainstmanyofthemostdangerousd
Externaldangersusuallyenforce______harmonyandsubordination.
AjuryhasfoundformerFrenchofficialMauriceMapontguiltyofcrimesagainsthumanityfor______.
Moreandmoreoftheworld’ssupplyofseafoodiscomingfromfarms.Although80%oftheworld’sseafoodcomesfrommarineha
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalfofagroupoffish【C1】______forthemarinefoodwe
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalfofagroupoffish【C1】______forthemarinefoodwe
随机试题
关于胃酸分泌有抑制作用的因素是
A.间歇性跛行B.“5P”征C.(指)趾端发黑、干性坏疽、溃疡形成D.搏动性肿块和杂音Buerger病局部缺血期的临床表现
上呼吸道最狭窄处位于()
关于法与道德的关系的论述,下列各项正确的有
[2013专业案例真题下午卷]某220kV变电站有180MVA,220/110/35kV主变压器两台,其35。kV配电装置有8回出线、单母线分段接线,35kV母线上接有若干组电容器,其电抗率为5%,35kV母线并列运行时三相短路容量为1672.2MVA。请
对于女职工和未成年工,国家制定了相关特殊保护规定,以下说法不正确的是()。
甲商品和乙商品的价格和收入按相同比例下降,则预算线()。
设X—N(3,0.22),则P(2X>6.8)=()。
投射,是指主观地将属于自身的一些不良的思绪、动机或情感,赋予到他人或他物身上,推卸责任或把自己的过错归咎于他人,从而得到一种解脱。根据上述定义,下列现象属于投射的是()。
Whatisthemainideaofthestory?Thelittlegirlboughtthenecklace______daysbeforetheChristmasEve.
最新回复
(
0
)