1680÷78÷56，
=1920÷56，
=2304（棵）；
答：梨树有2304棵．
–What do you think of my red gloves, Amy?
－___________.
A． Very well
B．I like it very much.
C．They’re nice.
D．It’s good.
生命周期理论认为，个人应当实现在某个生命周期阶段实现消费的最佳配置。( )
