According to the passage, the greatest part of the solar energy that reaches the Earth is _____.
A、reflected back to space by snow and ice
B、concentrated at visible wavelengths
C、absorbed by carbon dioxide molecules
D、absorbed by atmospheric water vapor
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正确答案
试题解析
根据文章第一段第二句可知,“these molecules allow radiation at visible wavelengths, where most of the energy of sunlight is concentrated, to pass through”,由此可以推断选项B是正确的。