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Rivers are one of our most important natural resources. 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 important part in 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 southeastern Asia. The greatest of all for navigation, however, is the Amazon in Brazil. It is so wide and so deep that large ships can go about two thousand miles up 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 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 on rivers often cause problems. As the cities grow in size and industry increases, the water in the rivers becomes polluted 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 of these natural resources.
1. The greatest river for navigation is ________________.
A. the Mississippi B. the Nile C. the Mekong D. the Amazon
2. Which is WRONG?
A. Many cities are located on rivers.
B. Almost every country has at least one important river.
C. The Nile is in India.
D. Rivers play an important part in the lives of people.
3. When rivers are dammed, people use the water for __________.
A. keeping the rivers clean B. making electricity
C. washing clothes D. irrigation and the production of electricity
4. Most water in rivers is polluted with ___________.
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 for the passage is _____________.
A. The Importance of Rivers B. Rivers in Cities
C. Transportation D. Natural Resources
查看习题详情和答案>>are located on rivers, and almost every country has at least one river flowing through. That plays an
important part in 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 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 Brazil. It is so wide and so deep that large ships can go about two thousand
miles upon it.
Besides transportation, rivers give food to eat, 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 polluted 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.
B. the Nile
C. the Mekong
D. the Mississippi
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.
B. only making electricity
C. washing clothes
D. irrigating and making electricity
B. people's swimming in the river too much
C. chemicals and other materials
D. people's building a dam across a river
B. The Importance of Rivers
C. Transportation
D. Natural Resources
are located on rivers, and almost every country has at least one river flowing through it that plays an
important role in the lives of its people.
Since the beginning of the 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 Gangs 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 Brazil. 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 crops, engineers
sometimes build a dam (大坝) across a river and let a lake from 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 polluted 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.
B. the Nile
C. the Mekong
D. the Mississippi
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.
B. only making electricity
C. washing clothes
D. irrigation and making electricity
B. people's swimming in the river too much
C. chemicals and other materials
D. people's building a dam across a river
B. The importance of Rivers
C. Transportation
D. Natural Resources
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are located on rivers, and almost every country has at least one river flowing through it that plays an
important part in 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 Mississipi. The lifeline of Egypt is 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 Brazil (巴西). It is so wide and so deep that large ships can go about two
thousand miles upon it.
Besides transportation, rivers give food to eat, 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 polluted
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. Which of the following is WRONG according to the passage?
A. The Mile is in 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.
2. From a dam, people can use the water for .
A. keeping the rivers clean
B. only making electricity
C. washing clothes
D. irrigating and making electricity
3. 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
4. The best title of the passage is .
A. Rivers in Cities
B. The Importance of Rivers
C. Transportation
D. Natural Resources