从艺术表现角度看，字幕分成两大类：修饰性字幕、说明性字幕。（）
参考答案：错
下面选项中，不属于微型计算机性能指标的是( )。
A．字长
B．存取周期
C．主频
D．硬盘容量
We thought there were 35 students in the dining hall, ____, in fact, there were 40.
A．while
B．whether
C．what
D．which
