. If law and order , neither the citizen nor his family is safe.
A. are not preserved
B. is not preserved
C. were not preserved
D. have not been preserved
网友回答
A. are not preserved
(答案→)B. is not preserved
C. were not preserved
D. have not been preserved
解析：考查主谓一致。句意：如果法律法规得不到保护那么居民以及家人的安全得不到保障。 law and order指的是一个概念看成单数谓语也要用单数故选B