精选优质文档-倾情为你奉上高考英语阅读理解专项练习（及答案）（一）It is not always easy to understand inventions and new developments in science. To understand fiber optics（光纤）, however, you can try an experiment.Put a drop or two of mile into the glass of water. Turn off the lights. Shine the light from your flashlight（手电筒） through the top of the glass at an angle（角度） of about 45 degrees. Put a piece of white paper against the glass when the beam（光束）of light is shining. Move the paper so you can see where the beam
