A61的精選

問題詳情：設等比數列的前項和爲，若，，則（  ）A.61                 B.62                 C.63                 D.75【回答】C【解析】分析：利用等比數列*質求.詳解：由...

問題詳情：閱讀短文，掌握其大意，從每題所給的A、B、C、D四個選項中，選出最佳選項。WangFengqin,a61-year-oldwomaninBeijing,volunteerstosort(分類)rubbishinherlivingareainBeijing’sChaoyangDistrict.At6:30everymorni...

問題詳情：Tosupporthissickwifeandearnapaycheck,a61-year-oldIowamannamedSteveSimoffsometimeswalks35milestohisjobasanovernightgatekeeper.Simofsaidthatheleaveshisbasementapartmentinasmalltownatabout3:30p.m...