首页
登录
职称英语
Ecology is the science of how living creatures and plants exist together and
Ecology is the science of how living creatures and plants exist together and
游客
2024-01-14
19
管理
问题
Ecology is the science of how living creatures and plants exist together and depend on each other and on the local environment. Where an environment is undisturbed, the ecology of an area is【C1】________ balance, but if a creature is exterminated (灭绝) or an alien (异类) species【C2】________, then the balance of nature will be【C3】________.
Man is a part of the【C4】________and has done more to upset the ecology during【C5】________short span on earth than【C6】________other living creature. He has done this by his ignorance, his【C7】________, his thoughtless foolishness and his uncontrolled wastefulness. He has poisoned the【C8】________and polluted both land and water. He has wasted the earth’s natural resources with no【C9】________for the future, and has thought out the most devastating ways of killing his fellow men and every other sort of life at the same time.
Since man has done so much【C10】________, it is【C11】________to man to try to put matters right—if it is not already too【C12】________.If there is to be any remedy for our ills, that remedy ultimately lies in the hands of the【C13】________, and the sooner they start doing something about it, the【C14】________.
One of the main【C15】________of the earth’s troubles is that the world is overpopulated and that this overpopulation is growing【C16】________an ever-increasing rate. At the same time we are【C17】________up our natural resources—fuels and mineral ores—at an ever-increasing speed with no hope of replacing them. For many years the earth has been unable to【C18】________enough food for these rapidly expanding populations and the position is steadily deteriorating【C19】________the fertility of some of our richest soils has been lost and vast areas that were【C20】________fertile lands have turned into barren deserts. [br] 【C15】
选项
A、reasons
B、effects
C、causes
答案
C
解析
causes一般指客观原因,而reasons则表示主观原因,故应选前者;effects表示结果,故选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3360922.html
相关试题推荐
Sincethebeginningofhistory,manhasbeenattractedbytheideaofliving
Sincethebeginningofhistory,manhasbeenattractedbytheideaofliving
Sincethebeginningofhistory,manhasbeenattractedbytheideaofliving
Sincethebeginningofhistory,manhasbeenattractedbytheideaofliving
Imagineonedayreadingthatyouhadbeenasubjectinariskyscienceexper
Imagineonedayreadingthatyouhadbeenasubjectinariskyscienceexper
Asweknow,physics______thescienceofenergy.A、wasB、wereC、isD、areC本题考查名词单复
Livingthingsare______cells,andcellsdonotgrowtomorethantwicethesize
Whatdowemeanbyasatisfactorystandardofliving?Obviously,itmustinc
Whatdowemeanbyasatisfactorystandardofliving?Obviously,itmustinc
随机试题
[originaltext]AlanTongwastheworstdriverintown.Hehadanaccidentof
A.堤坝路 B.傍山险路 C.落石路 D.临崖路
下图为楼地面变形缝构造,其性能主要适用于以下哪种缝设计? A.高层建筑抗震缝
()是风险监管的第一步,与现场检查、非现场检查和市场退出共同构成风险监管的完
关于地方政府债券,以下说法不正确的是()。A.一般债券是针对没有收益的公益性
我国房地产经纪行业中较早发展起来,且市场参与度尚不够高的房地产经纪机构是( )
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
控制病因未明的哮喘发作宜选 A.氨茶碱B.吗啡C.异丙肾上腺素D.
可引起听力减退或暂时耳聋的利尿药是A.螺内酯 B.呋塞米 C.乙酰唑胺 D
施工测量作业人员应遵循( )的原则,掌握工程测量的各种测量方法及相关标准,熟练
最新回复
(
0
)