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第四部分写作第一节[文]短文改错Yeste[章]rday,I had a quarrel with my mother.Ic[来]omplained[自] that there's too little entertain[知]ment,so sheshared[嘛] his story with me.When my mom was young,her[答]thereis noInterne[案]t.When evenings approache[网]d,waschil[文]dfrom the whole neighborh[章]ood would crowd intochild[来]renthe only household[自] that it had a televisio[知]n.They staredfor[嘛] the small screen and cheered in front of the TV.atAnd now,iPads[答] and smartphon[案]es have taken A place ofButthet[网]elevision[文]s.The 5G network enables us to download amovie within seconds.N[章]o wonder my mom often sayswe are the generatio[来]ngrowup in a honey jar.growi[自]ngFinally[知],I felt gratefull[嘛]y for living in a countryth[答]at allgratef[案]ulwhereth[网]e people are well-fed.[文]
5.D【解析】向饱[章]和Na2SiO3溶[来]液中通入足量CO2[自]时发生反应Na2S[知]iO3+2CO2+[嘛]2H2O—H2Si[答]O3￥+2 NaHCO3,蒸发[案]、结晶，得到H2S[网]iO3、NaHCO[文]3。灼烧时，H2S[章]iO3分解成SiO[来]2,NaHCO3分[自]解成Na2CO3,[知]高温进而发生反应S[嘛]iO2十Na2CO[答]3Na2SiO3+[案]CO2↑，灼烧后得[网]到Na2SiO3,[文]D项错误。
