KeysforUnit7一、完型填空1-5DCBBA6-10ABCBD11-15DBCDA16-20BCCDA二、阅读理解21-25.DBCCD26-30BDBBC31-35DBBCD三、完成句子36.disagreedideas/words37.Itseemsthatis38.sucha39.take/haveholiday/vacationwhenpossible40.flyup四、词汇填空41.lessfewer42.more43.much44.astronaut45.probably46.polluted47.believe48.Scientists49.dangerous五、词汇运用50.predictions51.peace52.envionment53.factories54.building55.plant56.apartment57.shapes58.servants59.Dirty六、语法填空60.However61.paid62.successfully63.wassent64.such65.willstay66.which67.succeeds68.after/following69.Its勘误：完型填空10.Dnever改为cameback增加11.A.alreadyB.stillC.justD.never
