阅读理解。

     Fish lay their eggs in different kinds of places. Some lay their eggs in mud (泥土). Others lay their eggs on

stones or underwater roots (根). Still other lay their eggs on the top of the water.

     One fish swims around blowing bubbles (气泡). These bubbles stick together and make a nest (窝).The

bubble nest floats on the top of the water, like an umbrella. The nest is strong. Wind and waves can not break

it. Into this bubble nest,the fish puts the eggs that a mother fish has laid. Then he watches over the nest. He

takes care of the eggs. When an egg falls out, he puts it back again.

1. Some fish lay their eggs on the top of ____.

A. a tree

B. the mud

C. the leaves

D. the water

2.The bubble nest______.

A. is like a boat

B. is not strong

C. is made by sticking bubbles together

D. floats around the water

3. What does the fish put into the bubble nest?

A. The baby fish

B. Some grass

C. The eggs

D. Some stones

4. Which of the following is true?

A. Wind and waves can break the bubble nest.

B. All fish build the same kind of nest.

C. It is the father fish that takes care of the eggs.

D. Some fish lay their eggs out of the water.

5. The story is mainly about ____.

A. how fish lay eggs

B. a bubble nest

C. how fish live

D. a fine pet