Once new difficulties in our new job we should learn to use our brains to solve them.A.

问题补充：

Once new difficulties in our new job, we should learn to use our brains to solve them.

A. rise

B. cause

C. arise

D. raise

答案：

A. rise

B. cause

(答案→)C. arise

D. raise

解析：考查动词辨析。句意：我们的新工作一旦出现困难，我们应该学着用智慧来解决他们。A上升，站起来，起床，升起；B引起，造成；C出现，由......产生；D举起，提高，起身，养育，筹集。Cause和raise是及物动词，故选C。