Mr. George works at the school lost and found. He works very carefully. Every day, when he gets a lost thing, he takes notes about it. There are pens, books, school uniforms, keys, walkmans and many other things in the lost and found. Most of them are the students’. If you lose your things, it’s easy for you to go to the lost and found for help. But you must tell Mr. George what it is and its color and the day when you can’t find it. I think Mr. George is very helpful, and you will be happy when you find the lost there.

生活中存在大量的形状相同的图形，试举出几例．

下图标注的北半球某河流两岸六地中，在自然状态下侵蚀较重的是（    ）

在神经系统中，组成中枢神经系统的是（　　）。

读课文《虎口藏宝》，根据意思写出相应的词语

指艺术形象非常逼真，如同活的一样。____ 

把箱子柜子都翻倒过来。形容彻底翻检。____