【1.Itisaknownfactthatchinahas__9.6millionkm2A.atotalareaoverB.atotalareaofover'C.totalareaofoverD.atotalareaofabout2.theyseeyouassomethingofaworrier,problems__whichdon'texistandcrossingbridgeslongbeforeyo】

　　1. Itisaknownfactthatchinahas__9.6millionkm2A.atotalareaoverB.atotalareaofover'C.totalareaofoverD.atotalareaofabout2. they seeyouassomethingof aworrier,problems__whichdon'texistandcrossingbridgeslongbeforeyoucometothemA.settlingB.discoveringC.seeingD.designing(麻烦翻译一下)3.__doyouthink__to?.A.whom,belongs B.who,itbelongsC.whose,belongingD.whom,belonging.