Hes not our______son—we adopted him when he was three.A.primitiveB.naturalC.firstD.origina

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Hes not our______son—we adopted him when he was three.

A.primitive

B.natural

C.first

D.original

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_________。