题目

请补全三视图中所缺的三条图线 答案：解：如图所示：从B栏中找出相对的应答语，将其序号填在题前括号内。      A                                B21. Hello，Bob!                A.    Good morning, Mike!22. Good afternoon, Cindy!    B.  I’m very well, thanks. And you? 23. How are you?              C.    Hi, Betty!24. Good evening, Ken!        D.    Good afternoon，Bell!25  Good morning, Eric!       E.    Good evening，Grace!