前臂缺血性肌挛缩造成的特有畸形是

A．“锅铲”畸形

B．“枪刺刀”畸形

C．垂腕畸形

D．爪状手畸形

E．猿手畸形

You should get down to your study from now on.Please________what is of great importance for

your future development.   [ ]

A. concentrate on  

B. depend on

C. put on  

D. take on