任务型阅读，给图片选择正确的句子。

  1. _____           2. _____           3. _____          4. _____           5. _____

A. You can see there are lots of computers in the room..

B. Where is Beijing? It's near Tianjin..

C. My favourite food is chicken..

D. Don't talk in the library.

E. What colour is this flower?

对每笔成交的证券及相应价款进行逐笔交收的主要目的是( )。

A．防止证券商的信用风险
B．防止在市场风险特别大的情况下净额交收使风险积累的情况发生
C．防止买空卖空行为的发生，保护市场正常运行
D．简化操作手续