4,6,5,7,7,9,11,13,19,21,() A. 27,29 B. 32,33 C. 35,37 D.41,43 4,6,5,7,7,9,11,13,19,21,()A. 27,29B. 32,33C. 35,37D.41,43 参考答案 查看答案