Creat as Newton was, many of his ideas        today and are being modified by the work of scientists of

our time.    [ ]

A.   have challenged        

B.   have been challenged    

C．have questioned      

D.   have been questioning

()配送中心规划资料分析一般包括订货变化趋势分析、订单分析、商品特性分析、物流工作分析等内容。

A．正确

B．错误