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What colors are commonly seen in the auroras？
问题详情
What colors are commonly seen in the auroras？ Click on two answers．
A．Orange
B．Red
C．Green
D．Brown请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：BC
解析：Red and green are commonly seen in the auroras. The professor says An early twentieth- century explorer wrote about the "bloody red" and "ghostly green" lights; Most of the time they're greenish-yellow,but sometimes they take colors from violet to red. (2.2)
