Recent studies have identified four major global environmental risks— acid rain, ozone depletion, deforestation and the greenhou

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问题 Recent studies have identified four major global environmental risks— acid rain, ozone depletion, deforestation and the greenhouse effect.

选项 A、recognized
B、proved
C、got rid of
D、multiplied

答案A

解析

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考博英语

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Recent studies have identified four major global environmental risks— acid rain, ozone depletion, deforestation and the greenhou

考博英语

Uponreachinganappropriateage(usuallybetween18and21years),childrenareencouraged,butnotforced,to"leavethenest"

Yetthedifferenceintoneandlanguagemuststrikeus,sosoonasitisphilosophythatspeaks:thatchangeshouldremindusth

The______ofgiftedchildrenintoacceleratedclasseswillstartnextweekaccordingtotheiracademicperformance.

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IntheUnitedStates,36statescurrentlyallowcapitalpunishmentforseriouscrimessuchasmurder.Americanshavealwaysargu

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ThesuddendemiseofBritain’soldestinvestmentbank______globalmarkets.

Itisinevitablethatastechnologydevelops,traditionalculturesmustbelost.Technologyandtraditionamincompatible—youca

Hawaii’snativeminorityisdemandingagreaterdegreeofsovereigntyoveritsownaffairs.Butmuchofthearchipelago’spoliti

Thehighunemploymentratesoftheearly1960soccasionedaspiriteddebatewith,intheeconomicsprofession.Onegroupfoundth

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