第二届夏季青年奥林匹克运动会将于2014年8月在南京举行,青奥会比赛将在“三大场馆区”的15个不同竞赛场馆进行26个项目比赛,将向世界奉献一届精彩的青奥会。在考察下列运动员的比赛成绩时,可视为质点的是() A . 马拉松 B . 跳水 C . 击剑 D . 体操 答案:A补全对话Li Lei: Oh, it's you, Lucy. 1 to see you. Lucy: Nice to 2 you, too. Mary. Li Lei: Come in, please, Mum, 3 is Lucy, my friend. She 4 American. And this is my mother, Lucy. Mum: 5 do you do, Lucy?Lucy: 6 do you do, Aunt?Mum: Sit down, please, Lucy. Li Lei: 7 you like 8 milk?Mum: I don't like 9 very much. Li Lei: 10 would you like?Lucy: I'd 11 a pear. Li Lei: OK. 12 you 13 ! What 14 something to drink?Lucy: All right. Li Lei: 15 it is!Lucy: Thanks!