在二十四节气中,白昼和黑夜一样长的是( )。A.立春、立秋 B.春分、秋分 C.立春、清明 D.春分、白露

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问题 在二十四节气中,白昼和黑夜一样长的是( )。
选项 A.立春、立秋 B.春分、秋分 C.立春、清明 D.春分、白露
答案 B
解析 一年中太阳两次直射在赤道上时,分别为春分和秋分,这也就到了春、秋两季的中间,这两天白昼和黑夜一样长。故本题选B。

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