unemployment and crime are high, it can be assumed that the latter is due to the former.
A. Before
B. Where
C. Unless
D. Until
网友回答
A. Before
(答案→)B. Where
C. Unless
D. Until
解析：句意：哪里失业人数多，犯罪就高。可以确定后者是由前者决定的。Before在……之前 Where在哪里 Unless除非Until到……为止，选B。