These days, many students like playing 3D games. Do you know what 3D games are like? In most 3D games, game players need to control (控制) a character. The character can be a robot or a soldier (士兵). Game players usually use the mouse to make the character move around in his own world. Game players can find things such as food and weapons (武器) to help them go on with the game. The character can go straight, sit down, turn left, turn right or pick up things in the game.
    Some 3D games have many levels (等级). The character needs to finish different goals for each level.Game players can play against their computers, and sometimes they can play with other players on-line. It's great fun to play 3D games. But playing 3D games for long is not good for our study.

如图所示，E，D是AB，AC上的两点，BD，CE交于点O，且AB=AC，使△ACE≌△ABD，你补充的条件是____ 

你的玩具找不到时，你会问：

写作

当今社会很多人想助人为乐却有所顾虑，请你给二十一世纪英文报写一封信，讲述你的同学李华在放学途中帮助一位摔伤老人的事情。

要点如下：                                             

1事情的经过；

2你的感想。

注意：

1词数100左右；

2可适当增加细节，以使行文连贯；

3开头已给出(不计词数)。

Dear editor，

Nowadays,an increasing number of people are reportedly unwilling to help others.

In recent years many football clubs ______ as business to make a profit.