Inthelast20yearsseai的知识精选

Inthelast20years,seaice         intheArcticbecauseofglo...
问题详情:Inthelast20years,seaice         intheArcticbecauseofglobalwarming.A.haddecreasedB.decreased    C.hasbeendecreasingD.isdecreasing【回答】C知识点:动词时态与语态题型:选择题...
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