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
Ecology is the science of how living creatures and plants exist together and depend on each other and on the local environment.
Ecology is the science of how living creatures and plants exist together and depend on each other and on the local environment.
admin
2022-02-12
30
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.
【C13】
选项
A、old
B、adult
C、young
答案
C
解析
结合上下文可知,本句说的是应该由年轻人去完成,故选the young,故选C。
转载请注明原文地址:https://kaotiyun.com/show/aFtO777K
0
成人本科学位英语
相关试题推荐
InWesternculture,anengagementbeginswith"yes"toasimplequestion:"Willyoumarryme?"Theseheart-stoppingwordsoften
Sincethebeginningofhistory,manhasbeenattractedbytheideaoflivingforever,ofwinningthefightagainstdeathanddis
Imagineonedayreadingthatyouhadbeenasubjectinariskyscienceexperimentwithoutknowingit.Atschool,youhadbeenfe
Alltheusefulenergyatthesurfaceoftheearthcomesfromtheactivityofthesun.Thesunheatsandfeedscreaturesandmank
ItwasabeautifulsummerdayandIwastakingawalkinthedowntownareaofMadrid.WhenIturnedastreet【C1】______Iheardth
Notallmemoriesaresweet.Somepeoplespendalltheirlivestryingtoforgetbadexperiences.Violenceandtrafficaccidentsc
Notallmemoriesaresweet.Somepeoplespendalltheirlivestryingtoforgetbadexperiences.Violenceandtrafficaccidentsc
Lastyearhelearned______hehadexpectedbecauseheworkedalotharder.
一个销售员以$100买进了一件夹克,他设定卖价等于在买价的基础上加上50%的卖价;在销售这件夹克的时候,这个人又在卖价的基础上打2折出售,那么这个销售员的净利润是多少?
有1,2,3,4,5,6六个数,从中任意取出两个不相等的数相加,得到一个偶数。问两个数相加和为偶数的情况中两个数都是奇数的概率?
随机试题
直径114mm的管件,定位焊焊缝通常为()。
A.反胃B.噎膈C.嗳气D.呃逆饮食入胃,宿食不化,经过良久反出的是
下列哪种试验不能用来:检出G-6-PD缺乏A.高渗冷溶血试验B.高铁血红蛋白还原试验C.变性珠蛋白小体试验D.G-6-PD荧光斑点试验E.红细胞包涵体试验
关于骨骼肌兴奋-收缩耦联,哪项是错误的
A、桑白皮B、白鲜皮C、合欢皮D、海桐皮E、地骨皮质韧,难折断,易纵向撕裂,撕裂时有粉尘飞扬;气微,味微甘的药材是()。
医嘱的内容不包括
不属于国际上业主方工程建设物资采购模式的是()
将阻尼材料涂在振动源上,属于传播途径的控制中的()。
分析国民党政权崩溃的原因。
Stoppingcigarettesmokinghasbecomeabigproblemforallgovernments.Indemocraticcountries,theeconomicstrengthofthe
最新回复
(
0
)