1．People could hear on radio and television the talk between the astronaut (宇航员) and the flight controllers.
2．Proper physical and mental (精神的) exercise can increase your chances for health and wealth.
3．The satellite (卫星) enables us to calculate their precise location anywhere in the world.
4．All glass bottles which can’t be refilled can be recycled (回收利用)．
5．Time is your most valuable resource (资源)，especially in examinations.
6．A fresh egg will sink and an old egg will float (漂浮)．
7．Going away to college has made me much more independent (独立自主的)．
8．The details of today’s flights are displayed on the monitor (显示屏)．
EN-US>__shortages 能源短缺
