题型:问答题 简答题 ____________ his accent, he is from the south of China.A.Judged byB.Judging toC.Judging byD.To judge 查看答案
题型:问答题 简答题 水稻的糯性、无籽西瓜、黄圆豌豆×绿皱豌豆→绿圆豌豆,这些变异的来源依次是[ ]A.环境改变、染色体变异、基因重组B.染色体变异、基因突变、基因重组C.基因突变、环境改变、基因重组D.基因突变、染色体变异、基因重组 查看答案