I like winter. I can ____ snow. [ ]
A. play with
B. play on
C. playing in
答案：A
This is Susan and that is Mary. _ my _ .
A．She's, friend
B．He's, friend
C．They're; friends
D．They're, friend
电焊条药皮具有去除有害杂质，保证焊缝一定（）的性能。
