Issue 题目 Colleges and universities should require their students to spend at least one semester studying in a foreign country.
Argue题目 The following appeared on the Mozart School of Music Web site. "The Mozart School of Music should be the first choice for parents considering enrolling their child in music lessons. First of all, the Mozart School welcomes youngsters at all ability and age levels; there is no audition to attend the school. Second, the school offers instruction in nearly all musical instruments as well a wide range of styles and genres from classical to rock. Third, the faculty includes some of the most distinguished musicians in the area. Finally, many Mozart graduates have gone on to become well-known and highly paid professional musicians."
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Q 1、条件：只有黄绿两种颜色的球，一共8个，取球无放回。如果第一次取为绿色，第二次取仍为绿色的概率是2/7 问： A: 如果第二次取为黄色的基于第一次的球是黄色， B: 4/7 我选了A=B 根据条件绿球有3个，黄球有5个，所以第二次去为黄球是4/7 一开始不确定选的A<B，因为把题意理解为5*4/8*7, 后来仔细读了一下感觉应该是强调 第二次是从7中剩下的4个黄色中选，所以4/7 2、（2x+1）^2-（2x-1）^2=? 8x 3、学校的学生里面3/8是sophomores, 1/50是学biology的，为学校可能的总人数 能够被3/8和1/50同时整除的就可以 4、-1<x<y<0,排序xy，x^2y和xy^2？ x^2y<xy^2<xy 5、条件：area of x is samewith area of y, radium of A is twice of radium of x, the diameter of B is 0.75more than the diameter of y 问：the area of A ? the area of B 选的the area of A大 X和y的半径相等，Rb= 1.75Ry 6、条件：图表 K=5000多 ；J=1493 ；S=507 问：J/(J+K)与S/(J+S) J/(J+K)=0.24与S/(J+S)=0.25一目了然 大家只要读懂题就可以 7、range of 3.2、4.1、a、8.3、9.2、2a的可能值 最小值 9.2-3.2=6，最大值就是用8.3*2=16.6，16.6-3.2=13.4 在6和13.4 之间 8、条件：数列A1，A2，…An…A64, n=2到64之间的任意整数， 若第一项为2，An=2A(n-1) 问：A64/2 比A32 选的A64/2大9、(x-5)的绝对值<2 的值域 用图表示出来的3<X<7 10、 x为整数，X^2 <10 ，x的个数 7个11、标准差是6.3，如果每个数都加9，标准差为？ 仍是6.3
哦 好滴 谢谢你了 辛苦了