头围的测量在2岁以内最有价值。()
参考答案:对
(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