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A. Nuclear reactions as the lasting source of the sun’s energy. B. The most important source of energy. C. Types of electromagne
A. Nuclear reactions as the lasting source of the sun’s energy. B. The most important source of energy. C. Types of electromagne
admin
2009-06-15
35
问题
A. Nuclear reactions as the lasting source of the sun’s energy.
B. The most important source of energy.
C. Types of electromagnetic energy.
D. The machines used for energy generation.
E. Seeking new sources of energy.
F. The use of ultraviolet radiation in medicine.
A. when it is absorbed by matter
B. when it is cloudy
C. because they can pass through solid objects
D. when the sunrays are fierce
E. when a change in the nucleus of an atom takes place
F. when electron rearrangement takes place
选项
答案
B
解析
借助问题句中的特征词sunburn作为答案线索词,在文章第1段的第4句找到答案相关句:On a cloudy day it is possible to get a sunburn even though you feel cool.判断答案为B。
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