单选题 Which of the following most logically completes the argument?
Virtually all respondents to a recent voter survey reported allegiance to one of the two major political parties. But over a third of the voters from each party reported being so disenchanted with the governing philosophies of both parties that they might join a third major party if one were formed. Even if this poll reflects general voter sentiment, however, there is no chance that a new party could attract a third of all voters, since______.

A、 the current level of disenchantment with the governing philosophies of the two major parties is unprecedented
B、 the disenchanted members of the two major parties are attracted to very different governing philosophies
C、 most respondents overestimated the proportion of voters disenchanted with both parties, saving that the proportion was more than 50 percent
D、 nearly half of all respondents reported that they would be more likely to cease voting altogether than to switch their party affiliation
E、 (E) any new party would be likely to inspire citizens who have not voted before to join and to become regular voters

【正确答案】 B

【答案解析】[解析] 本题作为本套题中第二个完成句子题，体现出了1998年度的考题倾向，与GMAT、LSAT题目的融合度逐渐增加，思路同第3题。(B)说明两党不满成员所倾向的主张完全不同，所以任意成立一个第三党不可能获得两类完全不同的选票，所以第三党不可能获得1/3选票，所以(B)正确。