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
Andrena Gravida is the name of a wild bee declining in the United Kingdom and the Netherlands. A (31) of months ago the recent d
Andrena Gravida is the name of a wild bee declining in the United Kingdom and the Netherlands. A (31) of months ago the recent d
admin
2009-06-24
31
问题
Andrena Gravida is the name of a wild bee declining in the United Kingdom and the Netherlands. A (31) of months ago the recent drop in migratory bird populations was known, based on a study (32) in the Netherlands. Now there’s more troubling news from that part of the world: a study released today by the journal Science reports that there’s been a dramatic loss of (33) among wild bees over the past 25 years in Holland.
There’s (34) to a 70% decline in the variety and (35) of bee (36) in some areas in Britain. A loss of biodiversity is more subtle (37) an overall drop in absolute numbers of (38) or plants, but it’s still (39) a problem because the (40) species in an ecosystem, the more the system (41) on each one of them, and if disease or some other (42) wipes out a species, its function could go unfilled. In the (43) of bees, that (44) is to pollinate plants, both wild and crop plants. And (45) the authors of the study show, there’s been a (46) decline in plants that were once pollinated (47) the disappearing bees. Indeed, it isn’t clear (48) came first, the plant decline or the decline in bees. It’s also not clear (49) any crops are in trouble, only that there’s a potential for it if this trend continues. It’s also not clear (50) it’s happening. Climatic changes caused by global warming are a possibility, but so is the destruction of wild habitat in both countries, as population and industry both expand.
选项
答案
which
解析
根据语法需要一个关系代词,指代上文描述的情况。
转载请注明原文地址:https://jikaoti.com/ti/jKSsFFFM
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
AliveabetterlifeBmadeupofmorethan50islandsChavemorefarmlandDnotbytheParliament,butbythepeopleEproduce
TheOriginoftheAirMailAtBlackpoolHoltThomasandGraham-Whiteagreedtomakeapracticalexperimentincarryingmails
WorkingMothersCarefullyconductedresearchesthathavefollowedthechildrenofworkingmothershavenotbeenabletoshow
EatingMeat—LessorMore?EverysecondintheUnitedStatesalone,morethan250animalsareslaughteredforfood,addingup
AImportanceofClassroomLearningBTelevision--ARichSourceofInformationCAdvertisementsasImportantMessagesfrom
Accordingly,anumberofothermethodshavebeenemployed.
A.Kripike’sresearchtool.B.Dangersofhabitualshortagesofsleep.C.CriticismonKripke’sreport.D.Awayofovercominginsom
NuclearPowerandItsDangerNuclearpower’sdangertohealth,safety,andevenlifeitselfcanbesummedupinoneword;rad
Withthehelpofthespace-shuttlecardedradar,archeologistsfound______."They"inthesecondlineofthelastparagraphre
______resultsin"Acidrain"?______islessthreatenedbyinternationalcrises?
随机试题
A.医源性传播B.垂直传播C.食物传播D.接触传播E.飞沫传播肠道传染病发生,通常是经
结核病传染的主要途径和方式为
水合氯醛在体内代谢成三氯乙醇,其反应催化酶为()。
下列选项叙述正确的是( )。
违约责任又称违反合同的民事责任,是指合同当事人故意不履行合同义务所应承担的责任。( )
工程监理合同的内容中,监理人的权利一般不包括()。
信息披露应遵循()的原则。
简述先行组织者技术。
【2015.四川】终身学习是我国《中小学教师职业道德规范》中的基本内容。()
我国最早的一篇文学专论,提出文章是“经国之大业,不朽之盛事”的观点是_____。
最新回复
(
0
)