Unit 7,A Visit to a Middle School,Part A,New words,middle school,teachers office,physics,lab,Welcome to middle school,The school library is on the first floor,The teachers office is on the second floor,Where are the chemistry lab,They are on the ninth floor,Where are the computer rooms,They are on the 9th floor,reading room which floor,science lab which floor,physics lab which floor,Answer,1,The reading room is on the third floor. 2,The science lab is on the fourth floor. 2,The physics lab is on
