找出下列单词中不同类的一项。(10分)
( )(1)A.principal B.teacher C.school D.student
( )(2)A.cabbage B.pork C.eggplant D.carrot
( )(3)A.fresh B.food C.salty D.sweet
( )(4)A.cook B.sweep C.river D.set
( )(5)A.under B.near C.sky D.behind
( )(6)A.closet B.kitchen C.bedroom D.bathroom
( )(7)A.grass B.tree C.flower D.cloud
( )(8)A.clean B.farm C.park D.city
( )(9)A.tomorrow B.Monday C.Friday D.Thursday
( )(10)A.thin B.tall C.quiet D.strong