There's ______water in the bottle. Don't throw it away.A.littleB.a littleC.a fe
There's ______water in the bottle. Don't throw it away.
A.little
B.a little
C.a few
D.few
There's ______water in the bottle. Don't throw it away.
A.little
B.a little
C.a few
D.few
A.struggling to get by
B.trying to make up for the loss
C.making progress
D.losing money
From this selection we may conclude that the king's crown______.
A. moved less water than pure gold of the same size
B. moved more water than pure gold of the same weight
C. moved more water than pure gold of the same size
D. moved less water than pure gold of the same weight
The young man's roommate went back to the college ______.
A.by air
B.by water
C.by bus
D.by train
A.柯氏位
B.aldwell,s)
C.瓦氏位(Water,s)
D.斯氏位(Stenever,s)
E.劳氏位(Law,s)
F.瑞氏位(Rhees,s)
A.the other
B.another
C.other
D.others
It's good for local people to be well aware that tourism will ______.
A.use up a large amount of water
B.weaken their economy
C.help keep their customs
D.help improve their life
(61)
A.high
B.highly
C.higher
D.height
The basic source of most water vapor is the ocean, evaporation, vapor transport, and precipitation (陈雨) make up the continuous movement of water from ocean to atmosphere to land and back to the sea. Rivers return water the sea. In an underground arc (弧) of the cycle, flowing bodies of water discharge some water directly into rivers and some directly to the sea.
What might have been discussed before this passage?
A.The ocean.
B.The earth.
C.The rainfall.
D.The atmosphere.
Rivers are one of our most important natural resources (资源). Many of the world&39;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.
The greatest river for navigation is ___________.
A.the Amazon
B.the Nile
C.the Mekong
D.the Mississippi
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
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
The best title of the passage is ___________.A.Rivers in Cities
B.The importance of Rivers
C.Transportation
D.Natural Resources
请帮忙给出每个问题的正确答案和分析,谢谢!
In ancient times, man settled near rivers or on river banks and built up large empires.
Water is Nature's most precious gift to man. Man needs water to irrigate his crops, to cook and to wash. In nations all over the world rivers mean life and wealth. They feed and clothe the nations around them.
Water is also a source of energy and power. Man constructs huge dams across the river to control the water for irrigation and get the energy needed to drive generators. The electrical power is then directed to homes, cities, factories and television stations.
Man uses water each day. His main source of water comes from reservoirs, which in turn get their water from the rivers.
Rivers also bring down soil and minerals from the mountains and deposit them on the plains building up rich river deltas for raising plants and crops. Fresh water life in rivers or in lakes fed by them provide man with food.
In a small way rivers help to keep man in good health and provide for his amusements. Various forms of water sports keep man strong and healthy.
Rivers have run on this earth long before man. Man's future ability to live is uncertain, but rivers will flow on forever.
Rivers have been important to man ______.
A.since the last century
B.for a very long time
C.since a few hundred years ago
D.since a few years ago