Most sharks live in ____ waters. Some live in rivers and lakes.

大部分鲨鱼生活在_____水中。有一些还生活中湖和河里。

Sharks have skeletons made of bones.

鲨鱼的骨架是骨头构成的。

All sharps are carnivores.

所有鲨鱼都是食肉动物。

The lose of the teeth of a shark can up to _______ in their life time.

鲨鱼一生最多可以掉多少颗牙齿。

Sharks have many rows of teeth. Which row has the biggest teeth and do most of the work.

鲨鱼有很多排牙齿，哪一排的牙齿最大做最多的工作？

Sharks sleep the way humans do.

鲨鱼和人类一样睡觉

What shark is the largest predatory fish in the world?

下列哪种鲨鱼在鱼类中是最大的捕猎者？

Which shark is the largest fish in the world?

哪种鲨鱼是鱼类当中最大的

Is Whale shark a predator?

鲸鲨是捕猎者吗？

Does shark like attacking humans?

鲨鱼会攻击人类吗？

About how many sharks are killed by human every year?

每年大概有多少鲨鱼被人类杀害？