Hearing the news they are ______joy and sorrow.A.alternativelyB.alternatelyC.jointlyD.mut

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Hearing the news, they are ______joy and sorrow.

A.alternatively

B.alternately

C.jointly

D.mutually

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。