股东凭借股票可以获得公司的股息和红利，参加股东大会并行使自己的权利。( )
参考答案：对
解析： 掌握股票的定义、性质、特征和分类。
一个三角形向右平移了3 cm，那么下列说法中错误的是[ ]
A．三角形的周长不变
B．三角形的面积不变
C．三角形的三个角的度数不变
D．三角形三个顶点移动的距离可能不一样
— Lucy looks very healthy. Do you know _____?
— At least half an hour.[ ]
A. how often she exercises.
B. how many vegetables she eats every day
C. how much milk she drinks every day
D. how long she exercises every day
