Teacher:However,isourworldalwaysbeautifulandsafe
Student:No,itisn't
Teacher:Why
Student:Sometimesitisdestroyedbysomenaturaldisasters(1),soitisalsodangerous
Teacher:Howdoyouthinkofourworld
Isitbeautiful
Student:Yes,itis
Warming-up灾害floodTeacher:Whatnaturaldisastershaveyoueverseen
Student:Ihaveseen
firedroughtsnow(ice)earthquake(2)volcaniceruption
andsoon地震震动quake(3)3
PresentationanddrillingTeacher:PleasereadthisnewsreportabouttheTangShanearthquake
Teacher:Whatabnormal(不正常的)thingshappenedinthegroundbeforetheearthquake
Student:(1)
Thewaterinthevillagewells(4)roseandfellforthreedays
水井T:Nowlet’sreadthefirstparagraph
Thewellwallshaddeepcracks(5)
Asmelly(6)gascameoutofthecracks
裂缝难闻的Teacher:Whatabnormalthingshappenedonthegroundbeforetheearthquake
Student:Thewaterpipes(7)insomebuil