Paul eventually came to Kate's house with a police officer, ________ he was reunited with his car.[    ]

A. where  

B. which

C. that  

D. there

采用电子头脑风暴法，所有成员可同时产生想法，在交流中具有平等性，这体现了电子头脑风暴法（）的优点。

A.匿名性

B.社会互动减少

C.更多人员参与

D.思想平行而入