Question

Water is the "life blood" of our earth. It is in every living thing. It is in the air. It runs through mountains and valleys. It forms lakes and seas. Nature has a great water system（系统）.Rainwater finds its way to rivers and lakes. River water runs into the sea. At the mouths of the rivers, fresh water joins the salt water of the sea.

Here at the mouth of a river there is much important plant and animal life. But pollution destroys this life. We have to clean our rivers. Man has to work with nature, not against it.

1.Water is like________.

A. clouds   B. blood   C. life

2. ________ is in every living thing. 

A. Blood   B. Water   C. Salt

3. The mouth of a river is near _________.

A. the sea   B. a lake  C. a mountain

4. There is much plant and animal life at the _________ of a river.

A. head   B. top   C. mouth

5.We have to ________ our rivers.

A. find   B. clean   C. pollute

 

Answer 1

1.B

2.B

3.A

4.C

5.B

【解析】

试题分析：这篇文章介绍了水是地球的生命血液。水存在于一切生物体内，存在于空气中；水流经山脉和山谷，形成湖泊和海洋。河水汇入大海，淡水河海水在入海口汇集，一同流入海洋。

1.Water is the "life blood" of our earth.可知，把水比作地球的血液。故选B.

2.It is in every living thing.可知，水存在于一切生物体内。故选B。

3.At the mouths of the rivers, fresh water joins the salt water of the sea.

可知，河嘴接近大海。故选A。

4.Here at the mouth of a river there is much important plant and animal life.可知，在海口有更多的动植物生命。故选C。

5.We have to clean our rivers可知，我们必须使我们的河流保持清洁。故选B。

考点：科普环保类短文阅读。