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
61
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] 【C2】
选项
A、discovered
B、introduced
C、brought
答案
B
解析
本句是说有两种情况会导致生态失衡:一种是某一动物的灭绝,另一种情况是异类侵入,introduce意为“引入,进入”,符合语境,故选B。
转载请注明原文地址:https://tihaiku.com/zcyy/3360909.html
相关试题推荐
Although______happenedinthedevelopedcountrysoundslikesciencefiction,i
______inarecentsciencecompetition,thethreestudentswereawardedscholars
Although______happenedinthatdevelopedcountrysoundslikesciencefiction,i
LivinginthecentralAmericandeserthasitsproblems,______obtainingwateris
Whatdowemeanbyasatisfactorystandardofliving?Obviously,itmustincl
Whatdowemeanbyasatisfactorystandardofliving?Obviously,itmustincl
AftersixmonthsoflivinginNewZealand,Irealizedonething.Despitemy【C
AftersixmonthsoflivinginNewZealand,Irealizedonething.Despitemy【C
AftersixmonthsoflivinginNewZealand,Irealizedonething.Despitemy【C
AftersixmonthsoflivinginNewZealand,Irealizedonething.Despitemy【C
随机试题
[img]2011q1/ct_etoeiclm_etoeiclzp_0401_2010126[/img][br][originaltext](A)Th
Therearefourbasictypesofcompetitioninbusinessthatformacontinuum
[originaltext]Inmychildhoodhome,dinnerwasenjoyedwithhushedvoices,
不要管其他人怎样想,作为一个个体,这是一个你必须自己做的选择。(regardlessof)Thisischoiceyouhavetomakefo
TherecessionistakingaserioustollonAmericanretail,bute-commerceco
建筑施工特种作业人员应当参加年度安全教育培训或者继续教育,每年不得少于()学时
贷款人受理借款人贷款申请后,应履行尽职调查职责,对个人贷款申请内容和相关情况的(
根据中国证监会、住房城乡建设部《关于推进住房租赁资产证券化相关工作的通知》,下列
下列有关审计质量控制的措施中,属于对审计作业过程进行控制的有( )。A.审核审
一住店客人未付房钱即想离开旅馆去车站。旅馆服务员揪住他不让走,并打报警电话。客人
最新回复
(
0
)