______in the past he was extremely self-centered now he has genuine concern for others.A

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______in the past he was extremely self-centered, now he has genuine concern, for others.

A.Whereas

B.As if

C.Even as

D.When

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_________。