题目内容：

    Why keep them?

People keep dogs and cats because they enjoy their friendship. Fish cannot be friendly, but they have beautiful shapes and colours. They are a pleasure to watch as they swim in their tanks （水槽）.

What do they need?

First of all, the fish need a suitable （合适的） tank, and you must fill the tank with suitable water. It is also good for them to have a few water plants in the tank to keep the water pure （纯净）.A few snails (蜗牛) in the tank are a good idea, too. They will keep it clean.

What about feeding them?

There are many kinds of fish food that you can get in pet shops. Most are suitable for all kinds of fish. You should feed your fish once a day only. It is important not to give them too much food. Just give them as much as they can eat in about 15 minutes. This will keep them healthy.

1.It is not good to put ________ in the fish tank.

A.a few snails B.a few water plants

C.only a little water D.enough clean water

2.Why do people enjoy keeping fish?

A.Because fish can play with people.

B.Because fish are very friendly.

C.Because fish can clean the tanks.

D.Because people love to watch them swimming in the tanks.

3.How often can you feed the fish?

A.Once a week. B.Once a day.

C.Every fifteen minutes. D.As many times as possible.

4.If you feed too much food to the fish, it will make the fish ________.

A.thirsty B.fat

C.unhealthy D.dirty

5.Which of the following sentences is NOT TRUE?

A.Some people love to keep fish of beautiful shapes and colours.

B.A suitable tank with suitable water is important for fish keeping.

C.All the fish food sold in pet shops is suitable for any kind of fish.

D.If it takes the fish 30 minutes to eat up the fish food, the food is too much.