No ambitious politician will challenge an elected public official running 8 L; \4 e6 b. G$ t; V) hfor reelection unless that official appears vulnerable. Nonetheless,) c& Y" |' W @/ u; k. u7 }2 W& ~$ r
elected public officials who do not appear vulnerable as they attempt9 ^# X! I9 j( A9 D- W& q0 k) Y
to win reelection rarely run unopposed.9 K8 F: G$ |9 G" {/ l
If the statements are true, which of the following conclusions can be7 _* k% V: A( E; G8 ?! I6 W) ~
properly drawn from them?5 Z+ N2 A/ V1 S. y R" u
A If an elected official running for reelection appears vulnerable,0 P' m/ c8 U7 r( _0 C
that official's challengers will all be ambitious politicians. 3 ?" l+ C8 _7 m' U B Some elected officials running for reelection are challenged by3 W. \3 B1 y' n9 h) T
people who are not ambitious politicians. 5 I9 n* `% c; z I w
C Elected officials running for reelection who do not appear vulner-6 ^/ A& h( {+ v* Y) o
able are themselves ambitious politicians. ! c' t' T0 V; ` }. o% U D A person who is not an ambitious politician cannot win an election - W; |% u# U/ O* {/ ^4 H# b$ H$ B contested by the current officeholder. 2 A( a o9 u; n* O | E A politician's career will be seriously set back if the politician 9 E' ^9 V# c8 f5 a% \8 ] wages an unsuccessful campaign for elective office. . H; _# ~) S! v7 C$ J& E- g
答案：B
发表于 2012-8-15 12:40:43
