在面向对象方法中，______描述的是具有相似属性与操作的一组对象。
参考答案：类
如图的电路中电表连接正确的是[ ]
A．
B．
C．
D．
Which of the following activity may not be done correctly by college students().
A. To figure out a tip.
B. To balance a checkbook.
C. To compare prices.
D. All of the above.
