【单选题】My sister can play ______ guitar, while my friend Jack can play______ baseball. [ ]
【简答题】My sister can (sing).
【简答题】One of the main features of our human languages is arbitrariness. Can you briefly explain what this feature refers to? Support your argument with examples.
【单选题】My sister can play______violin very well.
【单选题】将一个设计好的菜单存盘,再运行该菜单,却不能执行,是因为()
【单选题】My sister can ______. [ ]
【简答题】My sister can play ___________ guitar, while my friend Jack can play ___________ baseball. [ ] A .a;the B. the;a C. /;the D. the;/
【判断题】在烧无烟煤时,炉膛容积热负荷qV应取小些好。
【单选题】My sister can play ______ guitar, while my friend Jack can play ______ baseball. [ ]
【单选题】将一个设计好的菜单存盘,再运行该菜单,却不能执行。因为______。