①刚出生的小袋鼠只有人的手指那样大，眼睛还睁不开．它出生时掉在母袋鼠的尾巴根部，靠脚爬向母袋鼠的尾尖，再从尾尖爬到母袋鼠腹部的育儿袋中吃奶．

②在迷宫的一壁安上电极，而另一壁是潮湿的暗室，其中还有食物．当蚯蚓爬到安有电极的一壁时，它就会受到电击．经过多次尝试和失败后，蚯蚓能够学会直接爬向潮湿的暗室．

③一只失去雏鸟的美国红雀，总是给养鱼池边浮到水面张口求食的金鱼喂它捕来的昆虫，就像喂自己的雏鸟一样，一连喂了好几个星期．

④很多年前，在英格兰有一只大山雀，一次偶然碰巧打开了放在门外的奶瓶盖，偷喝了牛奶．不久，那里的其他大山雀也学会了偷喝牛奶．

⑤幼小的黑猩猩能模仿成年黑猩猩，用一根蘸水的树枝从洞穴中钓取白蚁作为食物．成年黑猩猩会利用经验来解决问题．

⑥当香蕉被挂在高处够不到时，黑猩猩就会把几个小箱堆叠起来，然后爬到木箱顶上去摘香蕉．

Hello, I’m Linda. I have four friends. They are Ann, Lisa, Tom and Peter. Ann lives near school. She comes to school on foot. There is an underground station near Lisa’s home. She comes to school by underground. Tom lives far from school. He comes to school by bus. Peter likes riding. He comes to school by bike.

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