题目内容：

 

What do people usually put in their living rooms? Perhaps you will think of something such as a TV, a coffee table or a sofa. But French designers（设计师）Mathieu Lehanneur and Anthony van den Bossche didn’t think that was enough. They wanted to add something new in people’s living rooms. So they created a do-it-yourself ecosystem (生态系统) named “Local River”. The system lets its owner grow fish and plants inside tanks（缸） in their living rooms.

In the DIY fish and gardening ecosystem, the plants on top of the tank feed on the waste of the fish below. It makes the water clean so the fish can go on living. In this way, the fish and plants in the “Local River”can keep the balanced environment with a little help from the owner. The system is also called “fridge-aquarium (冰箱水族馆)” by some people because owners can use the fish and plants as food. That is to say, owners are able to grow fish and plants within the "Local River" before eating them. Almost any plant can grow on top of the tanks and most freshwater fish are able to live in the tanks below.

The“Local River”ecosystem from Paris comes in small and large models. It is a relaxing thing to have in your home.

根据短文内容，选择最佳答案。

1.Where are the designers of the “Local River”?

A. They are from France.    B. They are from England.

C. They are from the US.    D. They are from Germany.

2.What does the system let its owner grow?

A. Fish and crops    B. flowers and grass

C. Plants and flowers    D. Fish and plants

3.How do the plants of the system grow?

A. By feeding on the fish.    B. By feeding on the water.

C. By feeding on the fish waste.    D. By feeding on the fish food.

4.Why is the system called “fridge-aquarium” by some people?

A. Because the tank can be put in the fridge.

B. Because owners can grow fish and plants in it.

C. Because owners can eat the fish and plants in it.

D. Because owners can grow the fish and plants in it and sell them.

5.What can we know from the passage?

A. All fish are able to live in the tanks below.

B. The “Local River” ecosystem is a relaxing thing to have at home.

C. The "Local River" can keep the balanced environment all byitself.

D. In the DIY fish and gardening ecosystem, the plants grow under the tank.