Fun Time 欢笑时间

A Good to know. 了解一下。

Mammals 哺乳动物

Mammals have warm blood. 哺乳动物是热血的。

Mammals are covered with hair or fur. 哺乳动物有皮毛覆盖。

Mother mammals feed milk to their babies. 母哺乳动物用奶喂宝宝。

Birds 鸟

All birds have feathers. 所有的鸟都有羽毛。

All birds have two wings. 所有的鸟都有两个翅膀。

Mother birds lay eggs. 母鸟下蛋。

Reptiles 爬行动物

Reptiles have cold blood. 爬行动物是冷血的。

All reptiles have scales. 所有的爬行动物都有鳞片。

Mother reptiles lay eggs. 母爬行动物下蛋。

Most reptiles have four legs. 大部分爬行动物都有四条腿。

(A snake is a reptile with no legs.) （蛇是没有腿的爬行动物。）

Insects 昆虫

All insects have six legs. 所有的昆虫都有六条腿。

Mother insects lay eggs. 母昆虫下蛋。

Most insects can fly. 大部分昆虫能飞。

Most insects have wings. 大部分昆虫有翅膀。

C Let's sing. 一起唱吧。

What kind of animal is a penguin? 企鹅是哪种动物？

Is it a fish or a bird? 是鱼还是鸟？

Is it a reptile or a mammal? 是爬行动物还是哺乳动物？

A penguin is a bird, take my word. 企鹅是鸟,相信我的话。

What kind of animal is a blue whale? 蓝鲸是哪种动物？

Is it a fish or a bird? 是鱼还是鸟？

Is it a reptile or a mammal? 是爬行动物还是哺乳动物？

A whale is a mammal, take my word. 鲸鱼是哺乳动物,相信我的话。