1. 阅读下列短文，从每小题的三个选项中选出最佳选项。
There are a lot of sea animals in the world. Oceans are their home. Here are three of them. They are sharks, dolphins and octopuses. Let's learn something about them.
Most Sharks look for food at night. Some sharks like opening their mouth when they are swimming through the sea. They will eat anything on their way. Most sharks have good eyes. They can see well in the dark seas.
Dolphins are very smart animals. There are more than thirty kinds of dolphins in the world. They are very kind and helpful. Some people fell into the sea and dolphins saved them. Dolphins are not fish. They are mammals (哺乳动物) just like us.
This is an octopus. It is a kind of sea animal. It's famous for its round body and eight long arms. Its arms are very useful. It can use its arms to catch other small fish easily. An octopus has three hearts and its blood is blue.

（1） Where do sea animals live?

A . In the lakes. B . On the mountains. C . In the oceans
（2） What will sharks do when they are swimming?

A . Open their mouth. B . Eat anything on their way. C . Both A andB．
（3） How many kinds of dolphins are there in the world?

A . About 130. B . More than 13. C . More than 30.
（4） What do octopuses use to catch other small fish?

A . Their round body. B . Their arms. C . Their hearts.
（5） Which of the following is TRUE?

A . Dolphins are a kind of smart fish. B . Octopus' blood is red and blue. C . Most sharks have good eyesight (视力).

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	Most Sharks look for food at night. Some sharks like opening their mouth when they are swimming through the sea. They will eat anything on their way. Most sharks have good eyes. They can see well in the dark seas.
	Dolphins are very smart animals. There are more than thirty kinds of dolphins in the world. They are very kind and helpful. Some people fell into the sea and dolphins saved them. Dolphins are not fish. They are mammals (哺乳动物) just like us.
	This is an octopus. It is a kind of sea animal. It's famous for its round body and eight long arms. Its arms are very useful. It can use its arms to catch other small fish easily. An octopus has three hearts and its blood is blue.