精选优质文档-倾情为你奉上Unit 6 An old man tries to move the mountains.一、单项选择(每小题1分,共25分) ( )1._ jeans were invented over 100 years ago, theyre still in fashion today.A.BecauseB.IfC.AlthoughD.Since( )2.Since you are tired, youd better and have a good rest.A.to stop to studyB.stop to studyC.stop studyingD.to stop studying( )3.If you dont like the drink you , just leave it and try a different one.A.ordered B.are orderingC.will order