Google Earth is a virtual globe program. It maps the entire earth by combining zillions of photographs taken by __41__ . Much more detailed close shots are taken from airplanes. With Google Earth, you can fly high above the earth and promptly zoom down to the ground at will. You can take a virtual trip anywhere in the world __42__ havingto buy tickets. Within seconds, you can zip from the mountains of central Taiwan to the unknown villages of acertain __43__ island, seeing whatever there is to see. You may also key in an appropriate name of whatever placeyou would like to __44__ . Google Earth will take you right there. You can then zoom in and zoom out in variouscombinations of angles and altitudes, __45__ things around in any way you choose. If you happen to be a teacher,perhaps you may also consider using Google Earth to bring the world inside your classroom.