根据下面资料，回答下面试题
　　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.Some was collected by this season’s plants as carbon compounds.Some was stored by plants and trees ages ago.Even water power derives from the sun.Water turned into vapor by the sun fails as rain.It courses down the mountains and 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.
　　第36题 The sun is the source of all of the following EXCEPT_____.
　　A.gasoline B.natural gas C.atomic power D.animal fat
　　答案：C
　　第37题 Radiant energy is stored as carbon compounds by_____.
　　A.plants B.water C.rock D.creatures
　　答案：A
　　第38题 The sun’s energy provides US with all EXCEPT_____.
　　A.rain B.teal C.water D.light
　　答案：B
　　第39题 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
　　答案：B
　　第40题 Of the sun’s total output of radiant energy，the earth receives_____.
　　A.one tenth B.one millionth.
　　C.all mat comes from the surface of the sun D.a very small portion’
　　答案：D

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