单选题 One way to maintain social stability is to crack down on crime while creating more jobs.
A. clamp down on B. settle down to
C. look down upon D. boil down to

【正确答案】 A

【答案解析】crack down on：打击；clamp down on：打击，抑制；settle down to：安心做……；look down upon：瞧不起；boil down to：归结为