
搜考试题目使用:法宣在线题库助手(http://gongxuke.net/)
Whichofthefollowingstatementsaboutthesalinityofabodyofwatercanbestbeinferredfromthepassage?
A、Thetemperatureofthewateristhemostimportantfactor.
B、Howquicklythewatermovesisdirectlyrelatedtotheamountofsalt.
C、Oceansalinityhaslittleeffectonsealife.
D、Variousfactorscombinetocausevariationsinthesaltcontentofwater.
正确答案:公需科目题库搜索
答案解析:答案选D。文章提到赤道、沿海以及南极洲地区不同的海水含盐量,由此可以得知D项能被推断出来。
WhydoestheauthormentiontheWeddellSea?
A、toshowthatthisbodyofwaterhassalinityvariations.
B、tocompareAntarcticwaterswithArcticwaters.
C、togiveanexampleofcold-watersalinity.
D、topointoutthelocationofdeepwaters.
正确答案:公需科目题库搜索
答案解析:答案选C。文章最后一段说IntheWeddellSea,offAntarctica,thedensestwaterintheoceansisformedasaresultofthisfreezingprocess,whichincreasesthesalinityofcoldwater,由此可知选项C正确。
Whyareantscomparedtoecosystemengineers?
A、ecausetheybuildtheirownnests.
B、ecausetheycollectfood.
C、ecausetheiractivityaffectstheenvironment.
D、ecausetheyarepredators.
正确答案:公需科目题库搜索,题库助手微-信(go2learn_net)
答案解析:答案选C。短文的第一段提供了答案。A不是正确答案,因为并不是因为蚂蚁会筑巢才被誉为生态系统工程师,而是因为它们筑巢和获取食物的方式改变了土壤的营养水平,为整个食物链提供了很好的生态环境(见第二段)。
Whatdoesthepassagemainlydiscuss?
A、Theelementsofsalt
B、Thebodiesofwateroftheworld
C、Themanyformsofoceanlife
D、Thesalinityofoceanwater
正确答案:公需科目题库搜索
答案解析:答案选D。通篇都出现了关键词salinity,因此选D。
Whatdoesthepassagemainlydiscuss?
A、Theelementsofsalt
B、Thebodiesofwateroftheworld
C、Themanyformsofoceanlife
D、Thesalinityofoceanwater
正确答案:公需科目题库搜索
答案解析:答案选D。通篇都出现了关键词salinity,因此选D。
WhichofthefollowingisNOTmentionedinthefirstasareasonforpopularinterestinbirds?
A、Theirecologicalvalue
B、Theirappealinghabits
C、Theirvisibility
D、Theirbeauty
正确答案:公需科目题库搜索
答案解析:答案选A。其他三项在第一段都提到了。
WhydoestheauthormentiontheWeddellSea?
A、toshowthatthisbodyofwaterhassalinityvariations.
B、tocompareAntarcticwaterswithArcticwaters.
C、togiveanexampleofcold-watersalinity.
D、topointoutthelocationofdeepwaters.
正确答案:公需科目题库搜索
答案解析:答案选C。文章最后一段说IntheWeddellSea,offAntarctica,thedensestwaterintheoceansisformedasaresultofthisfreezingprocess,whichincreasesthesalinityofcoldwater,由此可知选项C正确。
Whatdoesparagraph6tellus?
A、ntsbringaboutanegativeinfluencetoanareawhentheirpopulationissmall.
B、ntsbringaboutapositiveinfluencetoanareawhentheirpopulationissmall.
C、nts’predationcounteractsthepositiveinfluencetheymayhaveonanarea.
D、thigherdensity,antsproduceapositiveinfluenceonanarea.
正确答案:公需科目题库搜索,继续教育助理微Xin[xzs9519]
答案解析:答案选B。短文第六段第二句的大概意思是,蚂蚁数量小(alowdensityofants)的话,能使其他动物的品种和数量增加(increasedthediversityanddensityofotheranimals),从而给环境带来积极影响;第三句说,如果蚂蚁的数量大(Athigherdensities),就不可能产生同样的影响,或者是相反的影响,这表明,蚂蚁的掠食活动会抵消蚂蚁给环境带来的积极影
Whyareantscomparedtoecosystemengineers?
A、ecausetheybuildtheirownnests.
B、ecausetheycollectfood.
C、ecausetheiractivityaffectstheenvironment.
D、ecausetheyarepredators.
正确答案:公需科目题库搜索
答案解析:答案选C。短文的第一段提供了答案。A不是正确答案,因为并不是因为蚂蚁会筑巢才被誉为生态系统工程师,而是因为它们筑巢和获取食物的方式改变了土壤的营养水平,为整个食物链提供了很好的生态环境(见第二段)。
Whichofthefollowingstatementsaboutthesalinityofabodyofwatercanbestbeinferredfromthepassage?
A、Thetemperatureofthewateristhemostimportantfactor.
B、Howquicklythewatermovesisdirectlyrelatedtotheamountofsalt.
C、Oceansalinityhaslittleeffectonsealife.
D、Variousfactorscombinetocausevariationsinthesaltcontentofwater.
正确答案:公需科目题库搜索
答案解析:答案选D。文章提到赤道、沿海以及南极洲地区不同的海水含盐量,由此可以得知D项能被推断出来。