死锁的防止是根据( )采取措施实现的。

A．防止系统进入不安全状态

B．配置足够的系统资源

C．破坏产生死锁的四个必要条件之一

D．使进程的推进顺序合法

Lewis was much admired ______ his work on the advanced medical research.

A．on

B．in

C．for

D．with