Unit10Whenwasitinvented
Selfcheck及教学资源教案SELFCHECK1FillingblanksOnpage73isaboxwith4sentences
Readthesentencesandfillintheblankwithacorrectword
crispysweetsaltysour1
Idon’tlikeeatingchocolate
Thetasteistoosweet
Momaddedsaltbutitstillwasn’tsaltyenough
Ipreferlemonstooranges
Ilikethesourtaste
Shelikescrispycookies
Theyarehard,dryandeasilybroken
Nowyouareaskedtomakeyourownsentenceswitheachofthefourwords
Thesnowiscrispy
Thecrackersaren’tcrispy
Theymusthavegotwet
Mycoffeeistoosweet—Iputtwospoonfulsofsugarinit
Doyoulikesweetdrinks
Seawaterisverysalty
Thissoupisverysalty
Ithinkyouhaveputtoomuchsaltinit
Theseorangesareassouraslemons
2Writingaboutinventionsonpage733000BC-Theabacus,builtoutofwoodandbeads,usedtheconceptsofonesetofobjectsstandinginforobjectsinanotherset,butalsotheconceptof