What’s the matter you?A．with B．on C．in D．about 题目和参考答案——青夏教育精英家教网—

题目内容

What’s the matter _____ you?

A．with

B．on

C．in

D．about

解析试题分析：句意：你怎么啦？A.with 和，用； B. on在……上面； C. in 在……里面； D.about 关于。What’s the matter with sb.？某人怎么啦？故选A。
考点：考查介词的用法。

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Rivers are one of our most important natural resources (资源). Many of the world's great cities are located(坐落) on rivers, and almost every country has at least one river running 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(运输). 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(庄稼), and chances for fun and entertainment for the people who live along their banks. In order to increase(增加) 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(化学物质) 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 MekongD. the Mississippi

2.From a dam, people can use the water for ___________.

A. keeping the rivers cleanB. only making electricity

C. washing clothesD. irrigation 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 ___________.