根据迈克尔·波特的竞争战略理论，单一营销策略具有针对性强、营销成本高的特点。()
参考答案：对
请把下列句子按正确语序排列。
( ) This is Zhang Ping. What are you doing now?
( ) Hello, Amy!
( ) Hello! Who is speaking?
( ) Nothing much.
( ) Will you go shopping with me? And...
Is there any way of ensuring we’ll have enough time( )our talks
A．in B．onC．with D．for
