北美12

北美12/29
onion 2003-12-30 21:14:55
750,真高兴!
俺从大前天晚上开始准备GMAT,看了OG的前130道改错题,做了10几道逻辑,2篇阅读,看了大约10范文,剩下的都花在费费数学宝典和12月数学JJ上了. 其实俺本科念的数学,后来又读了许多统计,数学要是不准备估计也能拿高分.但是在数学上多花点时间还是很值得,考试时少动了很多脑子,提前做玩后跑到洗手间坐了20分钟.

数学JJ:
1. DS: O could be addition, subtraction, or multiplication. what is O?
(1) 6 O 2 = 2 O 6
(2) 7 O (3+5) not equal to 7 O 3 + 7 O 5
Choose (C)

2. DS: a,b,c,d are integers, a Are a,b,c,d consecutive intergers?
(1) c-b=1
(2) d-a=3
Choose (B)

3. DS: The ratio of the income of Karl to that of Mia is 10:9 in 1994,
Did Mia earn more in 1995 than in 1994?
(1) Karl earned more in 1994 than in 1995?
(2)the ratio of the income of Karl to that of Mia is 9:10 in 1995

Choose (E)

4. PS: X,Y are digits, if 0.XY+0.YX=0.XX, what's Y?
Choose Y=0

5, PS: a sequence a_i = a_{i-1}+d 等差数列
If the first term is 54, 17th term is 30, what is 25th term?
Choose 18

AI:
92．“government should establish regulations to reduce or eliminate any suspected health hazards in the environment, even when the scientific studies of these health
AA:
61. “the alpha company has just reduced its workforce by laying off fifteen percent of its employees in all divisions and at all levels, and it is encouraging early retirement

　

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