某种水果每千克3元，小强购买这种水果花了m元，则小强购买了水果______千克．

人们的汽车梦能否实现，主要取决于(　　)

A．人们的收入水平和汽车价格

B．国家的汽车、交通、税收等配套政策

C．汽车的质量、性能、售后服务

D．人们的消费观念

移动硬盘300G

The investment policy statement is important to investors because:（）

A. it assures them that they will get the return they desire.

B. it helps them understand the risk-return tradeoff of their investment plan.

C. it helps investors understand financial markets.

巨幼细胞贫血的骨髓象表现为"核老质幼"的核、质发育不平衡的贫血；缺铁性贫血的骨髓象表现为"核幼质老"的核、质发育不平衡的贫血。（）

对非正式组织进行有效管理可以从哪几个方面进行？