Question

【题目】阅读下列短文，从每题所给的四个选项 A、B、C、D中选出最佳选项。C
Rivers are one of our most important natural resources(资源). Many of the world's great cities are located on rivers, and almost every country has at least one river 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(航海), 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(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 on rivers often cause problems. As the cities grow in size and industries increase, 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 them.
（1）The underlined word it in Paragraph 1 means ______________.
A.the world
B.the resource
C.the country
D.the river
（2）Which is NOT true according to Paragraph 1 and 2?
A.Many cities are located on rivers.
B.The lifeline of India is the Nile.
C.Almost every country has at least one important river.
D.Rivers play an important role in the lives of people.
（3）When rivers are dammed(筑坝), people can use the water for ____________.
A.keeping the rivers clean
B.irrigating and making electricity
C.watering crops and drinking
D.fun and recreation
（4）Most water in rivers is polluted by ____________.
A.chemicals and other materials
B.too many crops around it
C.using water for irrigating
D.building dams across rivers
（5）The river wants to tell us in the last paragraph that __________.
A.people should do more to keep rivers clean
B.people are learning the importance of rivers
C.cities grow in size and industries increase
D.cities and industries cause problems to rivers

Answer 1

【答案】
（1）C
（2）B
（3）B
（4）A
（5）A
【解析】文章大意：本文主要讲述了河流是人类最重要的资源之一，以及河流受到污染的事实。
（1）细节理解题。根据第一段中的and almost every country has at least one river through it that plays an important part in the lives of its people.句意：并且几乎每个国家至少有一条在它的人们生活中其重要作用的河流穿过它。可知it指的是the country，所以答案是C。
（2）细节理解题。根据第二段中的The lifeline of Egypt is the Nile. 可知选项B不正确，所以答案是B。
（3）细节理解题。根据第三段中的In order to increase the supply of water for crops, engineers sometimes build a dam(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. 可知人们建起大坝，人们可以灌溉田地和发电，所以答案是B。
（4）细节理解题。根据最后一段As the cities grow in size and industries increase, the water in the rivers becomes polluted with chemicals and other materials. 所以答案是A。
（5）推理判断题。根据文章最后一段内容：位于河边的大工厂经常带来问题。随着城市的扩大和工业的增长，河水被化学物质等污染。人们已经认识到保护河流的重要性，如果他们想从河流上获益的话。所以答案是A。