What kind of emotion does the blues express?A.Sadness.B.Happiness.C.Joking.D.All of the ab

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What kind of emotion does the blues express?

A.Sadness.

B.Happiness.

C.Joking.

D.All of the above.

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗