题目

- Did you remember to give Mary the money you owed her?    -Yes. I gave it to her ________ I saw her.     A. while            B. the moment      C. suddenly            D. once   答案：B△ABC中,∠A、∠B的对边分别为a,b，且∠A=60°,,那么满足条件的△ABC                                                      （  ）        A．有一个解        B．有两个解                C．无解    D．不能确定