下列统计指标中属于数量指标的有（）。
A.总收入
B.平均亩产量
C.平均工资
D.汇总人口数
E.农村人均所得
参考答案：A, D
绿化队，今年春天在一个山坡上共种杨树和柳树1920棵，种杨树和柳树的棵数比是5：3．杨树、柳树各种多少棵？
Why did she oppose the investment plan().
A.Because she thought that the plan was impractical.
B.Because she thought that the plan was risky.
C.Because she had her own investment proposal.
