单选题 The participants in a race consisted of 3 teams with 3 runners on each team. A team was awarded 6-n points if one of its runners finished in nth place, where 1≤n≤5. If all of the runners finshed the race and if there were no ties, was each team awarded at least one point?
(1)No team was awarded more than a total of 6 points.
(2)No pair of teammates finished in consecutive places among the top five places.

【正确答案】 A
【答案解析】[解析] 根据题意可知,前5名分别得5,4,3,2和1分,总分为15分。(1)充分,三个队中没有一个队超过6分,而总分又为15分,所以其结果一定是这三个队中的每个队都得了5分;(2)不充分,因为在满足题中条件的情况下,很容易使这三个队中的每一个队都至少得到1分,但另一方面当第一个队中的成员获得第1,第3和第5名,第二队的成员获得第2和4名时,第三个队则1分也没有得到。