A-A+
What is the main subject of the conversation？A
问题详情
What is the main subject of the conversation？
A．The importance of pure water
B．Factors that affect the color of water
C．How the human eye perceives color
D．The colors of the light spectrum请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析： The speakers mainly discuss factors that affect the color of water. The student asks ... why is water blue, like blue glass? The tutor says It's because water transmits light of every color, but it's clearest for colors with shorter wavelengths; Well,there are actually lots of factors that affect the color of water. (2.1)
