2. 外语
  3. On July 1st the ratio of men to women in Club X was 9 to 20. During the month, 2 additional men and 2 additional women joined th

On July 1st the ratio of men to women in Club X was 9 to 20. During the month, 2 additional men and 2 additional women joined th

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问题 On July 1st the ratio of men to women in Club X was 9 to 20. During the month, 2 additional men and 2 additional women joined the club, and no members dropped out.

Column A                                    Column B
The ratio of men to women in
Club X at the end of July                    1/2
选项 A、if the quantity in Column A is greater
B、if the quantity in Column B is greater
C、if the two quantity are equal
D、if the relationship cannot be determined from the information given
答案D
解析 7月1日X俱乐部的男女比例是9：20。这个月中又有2名男子和2名女士加入该俱乐部，且无会员退出。
解：本题的正确答案为(D)。比较的左项是在7月底X俱乐部的男女比。考生在做此题时，最易犯的错误是把9：20当成是男女的人数，从而进行计算时得到(9+2)：(20+2)=1/2，认真思考，考生就能发现9：20是比例，而2是数字，两者不能相加。
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