PPT预览
Language points
1. Have you noticed the "Tour" icon atthe top of the page?
at the top of ...在..….的顶部e.g.山上有座塔。
There is a tower at the top of thehill.
2.Just click on it, and you canvisit Asia, Africa,
click on..点击…..e.g.点击这个图标。
Click on this icon.
