首页
登录
职称英语
An influential early view held that ecosystems contain niches for a limited numb
An influential early view held that ecosystems contain niches for a limited numb
游客
2024-01-10
62
管理
问题
An influential early view held that ecosystems contain niches for a limited number of species and that competition for resources among species—whether native or nonnative invading ones—determines ecosystems’ species composition. However, factors other than competition often help explain invading species’ success. For example, the American grey squirrel, often cited as a classic example of competitively superior invading species, was introduced in England in 1876 and now thrives, while the native red squirrel population has declined. Although scientists have found gray squirrels to be more efficient foragers than red ones, they also note that even before the gray squirrel’s arrival, Britain’s red squirrel populations had a periodic tendency to die out, only to be subsequently reintroduced. Furthermore, many gray squirrels are silent carriers of a disease fatal to red squirrels. [br] It can be inferred that the author of the passage mentions the efficiency with which gray squirrels forage primarily in order to
选项
A、identify a factor that explains a certain phenomenon
B、call attention to an inconsistency in a particular theory
C、suggest that competition cannot be the factor responsible for a particular outcome
D、acknowledge a fact that appears to support a view that the author intends to qualify
E、cite evidence that is not consistent with an early influential view about species competition
答案
D
解析
根据efficient定位到第四句。该句说灰松鼠因为其捕食能力强而导致红松鼠数量减少,强调了灰松鼠的竞争性。fact指的是竞争,作者确实承认有竞争的因素。a view指的是早期观点,这个早期观点是作者要限制的。故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3350593.html
相关试题推荐
Skincontainsmillionsofsensoryreceptorswhichinformthebrain,throughelec
Byanymeasure,computersareamongthemostinfluentialandpowerfultoolsoft
AtacertainperiodinEarth’shistory,itsatmospherecontainedalmostnooxyge
Althoughplantandanimalspeciesthatbecomeestablishedinecosystemswhereth
Someecosystemsaremore(i)______thanothers,betterabletowithstandchanges,
AlthoughA.S.Byatt’sstoriesareelaborateandsometimescontainsupernaturale
InJapaneseaesthetics,especiallybutnotonlyinNoh,beautycontainstheidea
Theskinofthepoisondartfrogcontainsdeadlypoisonscalledbatrachotoxins.
AlthoughHarryStackSullivanisoneofthemostinfluentialsocialscientistso
Thereare,asyet,novegetationtypesorecosystemswhosestudyhasbeen(i)___
随机试题
Youshouldspendabout20minutesonQuestions27-40,whicharebasedonReading
Whenyoungcollegegraduatesdecidewheretomove,theyarenotjustlooking
AccordingtotheUNHumanDevelopmentReport,whichisthebestplaceforwomen
Whendidtheaccidenthappen?______.[br]Whatwerethetwoboats?Onewa
对于可能造成报警管路误报警的原因,维修方法有()。A.按照安装图纸核对报警阀组组
Governmentreports,examinationcomposit
下列人员中,可以由委任制产生的是( )。 A.国务委员 B.外交部副部长
Thearchitectureisharmoniousandnobu
关于架空线路绝缘子污闪电压的结论,下列哪些叙述是正确的?( )A.绝缘子污闪电
男,18岁。急起四肢无力,进行性加重。病前有腹泻病史。查体:四肢肌力3级。最可能
最新回复
(
0
)