英语数学题 答得好加分!!!!!!

来源:百度知道 编辑:UC知道 时间:2024/06/24 15:20:30
33. Surprisingly, all seven adult members of my family have their birthdays quite close together.
The dates are 1 January, 31 January, 2 February, 20 February, 21 February, 23 February and
27 February. For convenience the family decided to hold just one birthday party on the date
for which the sum of the days from the chosen date to each of the birthdays is a minimum.
This date is:

(A) 31 January (B) 1 February (C) 9 February (D) 11 February (E) 20 February

34. Each face of a cube can be painted either black or white. Two ways of painting a cube are
regarded as different if they cannot be confused no matter which way the cube is held. The
number of different ways of painting the cube is
(A) 5 (B) 7 (C) 8 (D) 10 (E) 64

35. A city railway network has for sale one-way tickets for travel from one station to another
station. Each ticket specifies the origin and de

33题我就不翻译了
其实就是取这些日期的中位数
1.1--1.31--2.2--2.20--2.21--2.23--2.27
This date is 20 February

34题
题目情况列表:
B为黑,W为白
情况--种数
6W----1
5W1B--1
4W2B--2
3W3B--2
4W2B--2
5W1B--1
6B----1
故有10种
35题
设原有车站有a,新增为x
则可得:
x*(a+x-1)=76
因为x、a皆为正整数,
故解有:
x=1,a=76
x=2,a=38
x=4,a=15
考虑到一个城市的交通情况,故此选A
=========================================
剩下的两道本人是无可奈何了,这不但是英语名词考察,简直就是美国版的奥数~~~
唉!

上面三题的解释我就不重复了。呼呼,把分数给我吧:)

40.(B) 37
设两人年龄x、y,10<x、y<90
100x+y的开方=100(x+9)+(y+9)的开方-9
解方程,求x+y
100x+y+81+18(100x+y)^(1/2)=100x+y+909
100x+y=2116
因为x、y的范围,所以x=21 y=16
x+y=37

41.没图没办法做。
只能帮你翻译下:
矩形PQRS的面积是80 cm(2) .三角形SRU面积是50 cm(2) .
求三角形TUQ的面积是多少平方厘米?

(A) 10 (B) 5 (C) 8 (D)4 (E)2

it's too complicated.