同义句转换

1. He concentrated his energies on study.

   He        _his energies _       study.

2. I must concentrate on my new task.

   I must be      _ _  my new task.

3. He fixed his eyes on his book and didn't notice we came in.

   He       his attention       his book and didn't notice we came in.

医学道德修养的内容是（）

A.医学道德规范体系

B."应该如何"内容

C."事实如何"内容

D."为什么如何"内容