course2
http://riverdeep.misdtx.net/content/language_arts/destination_reading/DR2/dr2/dr2/CM/CMMenu2.html
course 3
http://real.doe.k12.ga.us/content/DeliverableCourse/DR3/DR_G4to8/DR_G4to8_Launch.html
http://real.doe.k12.ga.us/content/launcher/dr3.html
course 4
http://real.doe.k12.ga.us/content/DeliverableCourse/DR4/DR_G4to8/DR_G4to8_Launch.html
http://real.doe.k12.ga.us/content/launcher/dr4.html
course 1
http://riverdeep.misdtx.net/content/language_arts/destination_reading/DR1/dr1/dr1/CM/CMMenu1.html
这个也可以
http://168.221.27.94/content/language_arts/destination_reading/DR1/dr1/dr1/CM/CMMenu1.html