问题
单项选择题
Every modern government, liberal or otherwise, has a specific position in the field of ideas ; its stability is vulnerable to critics in proportion to their ability and persuasiveness.()
A. futile
B. susceptible
C. feasible
D. flexible
答案
参考答案：B
解析：
本题中，vulnerable的意思是“易受攻击的”。B项“susceptible易受影响的”符合题意，如：be susceptible to cold(容易感冒)。其他三项“futile无用的；feasible可行的；flexible灵活的”都不正确。