2006年8月队请进！欢迎大家来讨论

mymengming

以下是引用allen0018在2006-8-6 15:44:00的发言：
M 大哥，你把
186-2.
350.

140. 1/x +1/y =1
   1/xy +1/z=1
求根号下(1/x+1/y+1/z-1/3)  答:根号5(x,y为整数)

答案:    根號[17/12]

都分别的作一下吧
thanks

我开始也不知道,后来查的那个台湾的MM的解法:

第一个式子可以写成xy=x+y           (x-1)(y-1)=1        这里她说X,Y是整数,所以有x=y=2

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

无比

1/x +1/y =1 =〉X+Y=XY  (1)

1/xy +1/z=1  =〉XY+ Z=XYZ  (2)

1/xyz＝3/16 ==> XYZ=16/3   (3)

设 1/xy =A ，1/z=B  =〉代入2，3

=〉A+B=1

     A*B=3/16

=〉。。。。

不会算了。。。。晕

allen0018

高，就是告诉我整数也白搭

无比

以下是引用allen0018在2006-8-6 15:50:00的发言：

大家怎么翻译这句话

People who are employed and look for a new job tend to get higher-paying jobs than job seekers who are unemployed.

tend to 是主观色彩还是客观描述？

 tend to  可以翻译成：往往会

客观描述~

lexie

以下是引用allen0018在2006-8-6 15:50:00的发言：

大家怎么翻译这句话

People who are employed and look for a new job tend to get higher-paying jobs than job seekers who are unemployed.

tend to 是主观色彩还是客观描述？

Is the sentence from GWD CR question?  According to my memory, that's the answer we need to choose.  Sorry about the gossip.

well, tend to can be put in anohter way-be likely to...so probably we can take it as objective description.

well, I know, "be apt to" is sorta generated by people's willingness.

[此贴子已经被作者于2006-8-6 17:12:58编辑过]

lexie

GWD25-24
    

Q24

Although improved efficiency in converting harvested trees into wood products

may reduce harvest rates, it will stimulate demand by increasing supply and

lowering prices, thereby boosting consumption.

A. in converting harvested trees into wood products may reduce harvest

rates, it will stimulate demand by increasing supply and lowering prices,

thereby boosting.

B. In converting harvested trees into wood products may reduce harvest

rates, demand will be stimulated because of increasing supply and

lowering prices, which boost.

C. Of converting harvested trees into wood products may reduce harvest

rates, it will stimulate demand by increasing supply and lowering prices,

which boosts.

D. Of harvested trees being converted into wood products may reduce

harvest rates, it will stimulate demand, because it will increase supply

and lower prices, thereby boosting.

E. When harvested trees are converted into wood products may reduce

harvest rates, demand will be stimulated because of increasing supply

and lowering prices, which boost.

Hi guys,

I take A.Obviously, the given answer is not A but B. In B, passive voice is not desirable and which could refer to supply and prices, but I don't think "which" play an effective role here. I just got a better feeling with A than with B. Any one can help here? My grammar sucks and sometimes I just can use "reading" and "feeling"  to pick up answers...

[此贴子已经被作者于2006-8-6 16:36:52编辑过]

mymengming

GWD-1-Q31:

Which of the following most logically completes the argument below?

 

 

Davison
     River farmers are currently deciding between planting winter wheat this fall or spring wheat next spring.  Winter wheat and spring wheat are usually about equally profitable.  Because of new government restrictions on the use of Davison
     River water for irrigation, per acre yields for winter wheat, though not for spring wheat, would be much lower than average.  Therefore, planting spring wheat will be more profitable than planting winter wheat, since‗‗‗‗‗‗.

 

 

1. the smaller-than-average size of a winter wheat harvest this year would not be compensated for by higher winter wheat prices 收入不足以抵消支出
2. new crops of spring wheat must be planted earlier than the time at which standing crops of winter wheat are ready to be harvested(这个好像也有道理,如果ww收获了sw还没种就可以种两茬了阿,这样不是更赚钱?)但是这个说的是相反的,ww收获之前sw就得种了,但是ww由于法令收获少了,不如sw赚钱,所以不能种ww,只能种sw,还有道理阿,这样说???迷惑了半年了,终于说出来了嘻嘻
3. the spring wheat that farmers in the Davison
         River region plant is well adapted to the soil of the region

4. spring wheat has uses that are different from those of winter wheat

5. planting spring wheat is more profitable than planting certain other crops, such as rye [A]

[此贴子已经被作者于2006-8-6 16:46:51编辑过]

lexie

Another SC quesiton from GWD. I'll apprciate your comments and thoughs.

http://forum.chasedream.com/dispbbs.asp?boardid=23&id=185952

无比

17.店里卖两种报，报A每份１元和报B每份1.25元，今天只卖了这两种报，r percent指的是报A收入占总收入的百分比，p percent指的是报A copies占总数的百分比，问r怎么用p来表示.

 r=400p/(500-p) 注意这里是百分比

 

这道题我怎么算都是=4p/(5-p)

到底应该怎么算~~~？

顾风

以下是引用lexie在2006-8-6 16:35:00的发言：
GWD25-24
 

Q24

Although improved efficiency in converting harvested trees into wood products

may reduce harvest rates, it will stimulate demand by increasing supply and

lowering prices, thereby boosting consumption.

A. in converting harvested trees into wood products may reduce harvest

rates, it will stimulate demand by increasing supply and lowering prices,

thereby boosting.

B. In converting harvested trees into wood products may reduce harvest

rates, demand will be stimulated because of increasing supply and

lowering prices, which boost.

C. Of converting harvested trees into wood products may reduce harvest

rates, it will stimulate demand by increasing supply and lowering prices,

which boosts.

D. Of harvested trees being converted into wood products may reduce

harvest rates, it will stimulate demand, because it will increase supply

and lower prices, thereby boosting.

E. When harvested trees are converted into wood products may reduce

harvest rates, demand will be stimulated because of increasing supply

and lowering prices, which boost.

Hi guys,

I take A.Obviously, the given answer is not A but B. In B, passive voice is not desirable and which could refer to supply and prices, but I don't think "which" play an effective role here. I just got a better feeling with A than with B. Any one can help here? My grammar sucks and sometimes I just can use "reading" and "feeling"  to pick up answers...

i agree with you. i choose a