请帮忙>:-<

1. 请帮忙>:-<

When the children get six years old, they need to go to school and finish the compulsive education. It has been admitted that reading more books brings people more knowledge and broadens their vision. But some people believe that reading books selectively is the right way. Both ways have their advantages.
Many years ago, the most prominent problem of the polluted environment is that the river and the water were changed their color, some fish even died for the polluted river. Now the situation becomes ever worse, lately, in the big city, like Beijing and Shanghai, people are annoyed by the bad weather. It is not the rainy day, but the haze around the sky, there is no way for people to run away for it. The haze contains toxic elements, people breathe it and hurt their bodies.
The haze problem is the result of people’s pursuit for the profit, what people did to the environment now has been paid back by the environment. Now people have realized the revenge from the nature is so huge, protecting the environment is the main task. No matter how bad the environment is, people still need to do something to fix their mistake.
打了这么多，欢迎采丶纳

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2. 请各位……帮帮忙!

————————如果解决了您的问题，请给予我好评吧，祝学习进步。——————————

解：连接BD，
∵等腰直角三角形ABC中，D为AC边上中点，
∴BD⊥AC，BD=CD=AD，∠ABD=45°，
∴∠C=45°，
又DE丄DF，
∴∠FDC=∠EDB，
∴△EDB≌△FDC，
∴BE=FC=3，
∴AB=7，则BC=7，
∴BF=4，
在直角三角形EBF中，
EF^2=BE^2+BF^2=3^2+4^2，
∴EF=5．
答：EF的长为5．

3. 1＋1＝?请大家帮忙

1十1 等于多少？这要看是从什么角度考虑。
在某些数制里，如八进制、十进制等，1+1等于2；
但是，在二进制里，1+1不是等于2，而是等于“10”；
也要看单位，1个+1个=2个，1个+1对=3个，1对+1对=4个，1个指头+1只手=6个指头，1天+1周=8天，1打+1个=13个……

逻辑运算中，1+1=1

文字游戏，一加一=十，=11，=王，=丰……；

生活中，1堆土+1堆土=1堆土，1堆土+1桶水=1堆泥……
在社会里，如2人结婚，1+1=1（1个家庭），后生了一个小孩，可以认为1+1等于3；
在企业联合方面，如果是强强联合，则1+1大于2；如果是弱弱联合，则1+1小于于2。
在算错的情况下，等于任何数都可能。
……等。

以上回答希望对你有所帮助。

4. 求帮忙。。

图

5. 帮忙…………

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B
C 
A 
C
C

6. 帮忙………………

假设它们能听懂人话，你说，每只都抬起6条腿，蛐蛐6条腿全抬起了，蜘蛛剩2条腿没抬起来。就是抬起来14x6=84条腿，还剩16条腿是蜘蛛的，所以蜘蛛8只。蛐蛐6只

7. 帮忙………

8. 帮忙^ω^