8086通过中断控制器最多可管理外部中断的个数为( )。
A．8个
B．64个
C．256个
D．不受限制
参考答案：B
一份印刷媒体每期实际印刷的份数被称为（）。
用所给单词的适当形式填空，每空一词。
1. Here are some ______ (orange) flowers for you.
2. His name is Jim Brown. Jim is his ______ (one) name.
3. What's ______ (it) name? It's Jimmy. It's ______ (I) cat.
4. She's an ______ (England) girl.
