This is my mother, Mr Green. Mum, Jim. [ ]
A. this is
B. that is
C. he is
D. it is
答案:A
在windows系统中,能进行中英文标点切换的快捷键是( )。
A.Ctrl+,
B.Ctrl+.
C.Ctrl+/
D.Ctrl+;
产生异代换的方法是:()、()和()。