阅读理解

(一)

Rivers are one of our most important natural resources(自然资源). Many of the

world’s great cities are located on rivers, and almost every country has at least

one river flowing through it that plays an the lives of its people.

Since the beginning of history, people have used rivers for transportation. The

longest one in the United States is the Mississippi. The lifeline of Egypt is the

Nile. To the people of India , the Ganges is great, but it is also important for

transportation; ships can travel along it for a thousand miles. Other great rivers

are the Congo in Africa and the Mekong in southeast Asia, The greatest of all for

navigation(航海), however, is the Amazon in Brail, It is so wide and so deep that large ships can go about two thousand miles upon it.

Besides transportation, rivers give food, water to drink, water for crops, and

chances for fun and recreation for the people who live along their banks. In order

to increase the supply of water for crops, engineers sometimes build a dam(大坝)

across a river and let a lake form behind the dam. Then people can use the water

not only to irrigate(灌溉) their fields but also to make electricity for their homes

and industries.

However, large cities and industries that are located upon rivers often make

problems. As the cities grow in size and industries increase in number, the water

in the rivers becomes polluter with chemicals and other materials. People are

learning the importance, however, of doing more to keep their rivers clean if they

want to enjoy the benefits(利益) of this natural resource.

1.The greatest river for navigation is _________.

A. the Amazon B. the Nile

C. the Mekong D. the Mississippi

2.Which is Wrong?

A.The Nile is India.

B.Almost every country has at least one important river.

C.Many cities are located on rivers.

D.Rivers play an important part in the lives of people.

3.From a dam, people can use the water for______.

A. keeping the rivers clean B. only making electricity

C. washing clothes D. irrigation and making electricity

4.The water in the river is polluted because of _____.

A. people’s drinking water too much B. people’s swimming in the river too much

C. chemicals and other materials D. people’s building a dam across a river

5. The best title of the passage is _________.

A. Rivers in Cities B. The Importance of Rivers

C. Transportation D. Natural Resources

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