【導(dǎo)讀】Lookatthepictures,can. seeinthepictures.(beautifulcities;broadroads;tallbuilding;largepopulation.). Nowlet’setoPre-readinganddecide. Why?asmellygas,eoutof,inthefarmyards,toonervoustoeat,runoutof,look. forplacetohide,waterpipes,thinklittleofsth.,asusual,itseemedthat,atan. wide,cutacross,inruins,beinjury,thenumberof,reachmorethan400,000,of,givemilk,halfamillion,insteadof,beshocked,laterthatafternoon,is/wasnot…digout,thedead,tothenorthof,coalmines,builtshelters,freshwater