Experience the newly opened Grand Ganyon(大峡谷) West Skywalk in Colorado. Departing from Grand Canyon's South Rim by Airplane to Grand Canyon's West Rim, you will land and take a ground tour to the Skywalk! Walk on air for 70 feet over the edge of Grand Canyon West.

　　This skywalk has been open since March 28,2007. Daily visitor ship to the Skywalk has been over 4,000 people. Please be patient to enjoy your moment on the Skywalk.

　　After you have experienced the one and only Grand Canyon Skywalk Glass Bridge, you will return to the Grand Canyon West Airport and take your Airplane for a flight back to the South Rim of the Canyon. This is a tour never to be forgotten as you will have walked on air over the Grand. Canyon.

　　64．This advertisement is for __________.

　　 A．Grand Canyon West B．Grand Canyon South

　　 C．Grand Canyon D．the Skywalk

　　65．The package fee does NOT cover the cost of _________.

66．The Grand Canyon Skywalk Bridge is make of glass because __________.