Passage 3
　　Questions 11to 1 5 are based on the following passage：
　　All the useful energy at the surface of the earth comes from the activity of the sun'．The sun heats and feeds creatures and mankind．Each year it provides men with two hundred million tons of grain and nearly ten million tons of wood，coal，oil，natural gas，and all other fuels are stored energy from the sun．(80)Some was collected by this season's plants as carbon compounds．Some was stored by plants and trees ages ago．Even waterpower derives from the sun．Water turned into vapor by the sun fails as rain．It courses down the mountains arid is converted to electric power．
　　Light transmits only the energy that comes from the sun’s outer layer，and much of this energy that is directed towards the earth never arrives．About nine tenths of it is absorbed by the atmosphere of the earth．In fact，the earth itself gets only one half millionth of the sun’s entire output of radiant energy．
　　11．The sun is the source of all of the following EXCEPT
　　A．gasoline
　　B．natural gas
　　C．atomic power
　　D．animal fat
　　12．Radiant energy is stored as carbon compounds by
　　A．plants
　　B．water
　　C．rock
　　D．creatures
　　13．The sun’s energy provides US with all EXCEPT
　　A．rain
　　B．teal
　　C．water
　　D．light
　　14．The largest part of the light energy directed towards the earth is
　　A．stored up by the plants
　　B．absorbed by the earth’s atmosphere
　　C．stored up by the animals in the form of body fat
　　D．used for electric power
　　15．Of me sun’s total output of radiant energy，the earth receives
　　A．one tenth
　　B．one millionth
　　C．all that comes from the surface of the sun
　　D．a very small portion

学位英语:2015年成人学位英语报名专题强化试题及答案 阅读理解题高分必备 历年真题