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今年三月二十二日,美国举办了第一届数学邀请赛(AIME),我国的北京市和上海市应邀参加了竞赛。竞赛分三个阶段进行。三月一日举行了初赛,也是第三十四届美国中学数学考试。初赛共30道选择题.要求用一个半小时答完,每题答对得4分,答错得一1分,并有底分30分,因此满分为150分。凡初赛成绩在95分以上的同学参加复赛。复赛共15道填空题,要求用二个半小时答完。在试卷的注意事项上己经指明每题只有一个正确答案,而且它是一个整数,每题1分。共计15分。下面向
On March 22nd this year, the United States hosted the first Mathematics Invitational Tournament (AIME). China’s Beijing Municipality and Shanghai Municipality were invited to participate in the competition. The competition takes place in three phases. The preliminary race was held on March 1st and it was also the 34th American Middle School Mathematics Exam. In the preliminary round, there were 30 multiple-choice questions. It took one and a half hours to answer, and each question was answered with 4 points. The wrong answer was scored 1 point, and there was a bottom score of 30 points, so the perfect score was 150 points. Students with a score of 95 or more in the preliminary round participate in the semi-finals. In the semi-finals, a total of 15 blanks were filled in, requiring two and a half hours to complete. It has been stated on the notes of the paper that there is only one correct answer for each question, and it is an integer with 1 point for each question. Total 15 points. Below to