1

1.29 - North America
onion 2004-01-30 21:58:57
(ATTENTION: I have met a lot of questions of JJ in both Math and RC. However, the numbers and questions have been changed. It took me a lot more time to think about that. PLEASE: Don’t remember the numbers! )

Math:
299。问13，679*（（10^6 - 10^4)/10^5) 的百位是什么数
289．DS：一个旅行车，平均速度80/H，问第一小时的速度大于90/H?
（1）一小时后的速度小于70/H
（2）总时间大于2小时
286.DS：一个集合，所有数是连续整数，问其中偶数的个数是偶数吗？
（1）集合里奇数34个
（2）集合里一共有68个数
282. DS 有一平行四邊形四個角ABCD, 四邊全等, 問是否可以知道對角線BD長為多少?
1)AD邊的長度為2
2)AC對角線長度為2
279. the base of a retangular solid tank is a square, the length of each side of the square is 4 meters, the altitude of the tank is 6, if there is 16 cube meters water in the tank, what is the rate of the volume of water in the tank to the volume of the retangular solid tank?
275.from a group of 3 boys and 3 girls, 4 children are to be randomly selected. what is the probability that equal numbers of boys and girls will be selected?

1, feet mile  hour  second. God, it took me 3 minutes (can remember the numbers, sorry)
2, if ½ 3, Come on! I should have been able to remember more …

AWA:
146
“Offering pizza in our cafeteria has proved extremely profitable. To further increase our profits from pizza sales, we should switch to PDQ Pizzeria to supply our pizza. PDQ pizza was twice voted the ‘best pizza’ in the neighboring town of Hamiltonia in on-line surveys of Hamiltonia Gazette readers. The PDQ branch in our town currently sells pizza for only slightly more than our cafeteria does and has begun offering free daily delivery. Switching to PDQ pizza will clearly improve satisfaction with our cafeteria and hence increase the cafeteria’s profits.”

29. “太多的人只想到得到结果。成功的关键是注意手边的特定事情而不担心结果。”

RC
1, 马达加斯加那个。
2，伏努运动。
3，Hell, how come I cannot remember the other 2 now?

SC
1, allow somebody to do something
2, both … and … (pay attention to the position of BOTH)

　

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