(2013·河南豫西五校一模)With Hurricane Sandy ________ the US east coast, Obama had to cancel Wednesday's campaign events in order to focus on the rescue and response efforts for Sandy.

A．approach

B．approaching

C．approached

D．being approached

在数据库设计中，将E-R图转换成关系数据模型的过程属于______。

A．需求分析阶段

B．概念设计阶段

C．逻辑设计阶段

D．物理设计阶段