天文学英文版PPT资料 (2)

iClickerQuestion1(donotansweruntilinstructed!)Doyouhavethetextbookfortheclass(“Universe”8theditionbyKaufmann&Freedman)?A)Yes,Ihavethetextbook.B)No,Idon’thaveityet.iClickerQuestion2(donotansweruntilinstructed!)Ifyouneedacopyofthetextbook,press“A”wheninstructed.Otherwise,donothing.Whichplanet(s)inoursolarsystemhas(have)beenvisitedbyspacecraft?A.VenusandMarsB.AlloftheterrestrialplanetsC.AllD.Mercury,Venus,Neptune,andMarsE.OnlyMarsQ1.3Whichplanet(s)inoursolarsystemhas(have)beenvisitedbyspacecraft?A.VenusandMarsB.AlloftheterrestrialplanetsC.AllD.Mercury,Venus,Neptune,andMarsE.OnlyMarsA1.3