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Water is one of the most important natural resources in the world.Everywhere, water use is

Water is one of the most important natural resources in the world.

Everywhere, water use is【61】. Humans already use fifty-four percent of all the【62】 water in rivers, lakes and underground. There are some estimates that this【63】will reach seventy percent by 2005.

Fresh water is necessary for life on Earth. People need water for【64】activities and to produce food. Water also is important for energy production and health of Earth's environmental systems.

The United Nations is organizing a【65】of events to increase concern【66】water issues. UN officials have【67】2003 the International Year of Fresh Water. A goal of the【68】is to build support for policies to use water more【69】.

Another goal is to get more people to use water in a way【70】will not hurt environment. The world population is more than six-thousand-million people. More than one-thousand-million【71】safe drinking water. More than two-thousand-million【72】 from diseases【73】to dirty water. And, more than two-thousand-million live without waste-treatment systems.

Water was one of the issues discussed at the UN Millennium Summit two years ago. Leaders said they would work to【74】the number of people without safe drinking water in half by 2015.

Nitin Desai directs the UN Office for Economic and Social Affairs. He says success【75】 these goals will require major changes in the ways people use water.

Next month, the World Water Forum will meet in Kyoto, Japan. Officials plan to【76】the first UN report【77】world water development. This report will examine the world's water problems.【78】it will offer suggestions on ways to meet future water demands. Experts say international reaction【79】the UN report will be an important test of the political desire to solve the water【80】.

(46)

A．increasing

B．extending

C．decreasing

D．diminishing

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更多“Water is one of the most impor…”相关的问题

第1题

What is often served before one's order？A．breadB．butterC．coffeeD．cold water

What is often served before one's order？

A．bread

B．butter

C．coffee

D．cold water

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第2题

2020年“世界水日”的主题是（)。

A.“Wastewater”(废水)

B.“Water and Climate Change”(水与气候变化)

C.“Leaving no one behind”(不让任何一个人掉队)

D.“Water and Sustainable Development”(水与可持续发展)

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第3题

—Good morning, Sunshine Community Center! May I help you?

—________________.

A.I’ d like to book one air ticket

B.I’ m glad to introduce myself to you

C.I need a plumber to repair the water pipe in my kitchen

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第4题

Little Anna's parents walked slowly, one after___, through the shallow water of a stream t

o search for her lost bag.

A．the other

B．another

C．other

D．others

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第5题

Good morning, Sunshine Community Center ! May I help you？（)A. I'd like to book one

Good morning, Sunshine Community Center ! May I help you？()

A. I'd like to book one air ticket.

B. I'm glad to introduce myself to you.

C. I need a plumber to repair the water pipe in my kitchen.

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第6题

Archimedes was a famous Greek mathematician and scientist. He was born around 287 BC and h

e died in the year 212 BC.

Archimedes is most well-known for one specific idea that he came up with. "Archimede's Principle" states that a solid object which is immersed in a liquid is pushed up by a force which is equal to the weight of the water that the object moves. For example, if you put a piece of wood and a piece of gold the same size in water, only the wood will float. Both the wood and gold move the same amount of water, but the wood weighs less than this water, while the gold weighs more.

It is believed that Archimedes discovered this principle when the king of Syracuse asked him to solve a problem. The king wanted to know if his crown was pure gold or a mixture of gold and silver. The king, of course, did not melt his crown to find out. The idea came to Archimedes as he lowered himself into his bath. He noticed how the water spilled out of the tub. He decided to use the same idea for the crown. He knew that a gold crown immersed in water would weigh more than one made of silver. The experiment was done and the goldsmith was proved guilty of trying to cheat the king.

A good title for the selection is ______.

A．Archimedes

B．Archimedes' Principle

C．A gold and silver crown

D．The king of Syracuse

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第7题

Directions: In each of the following groups of words, there are four underlined letters or

letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet.

1. A water B porter C daughter D laughter

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第8题

完成下列各题 C Some villagers were going to celebrate an important wine festival（酒

完成下列各题 C

Some villagers were going to celebrate an important wine festival(酒宴)in a few days’time，So they borrowed a huge barrel from the nearest town，put it in the village square, and decided that each of them should empty a bottle of the best wine he had into it，so that there should be plenty at the feast(宴会)． One of the villagers thought he would be very clever．“If I pour a bottle of water in．instead of wine．No one will notice it，”he said to himself．“because there will be so much excellent wine in the barrel that the water will be lost in it．” The night of the feast arrived．Everybody gathered in the village square with their bowls and their glasses for the wine．The tap(塞子)on the barrel was opened，but what came out was pure water．Everyone in the village had had the same idea． The villagers borrowed a huge barrel in order to__________．

A.hold water

B.take the place of wine bottle

C.hold wine

D.empty bottles

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第9题

Large animals that inhabit the desert have evolved a number of adaptations for reducing th

e effects of extreme heat. One adaptation is to be light in color, and to reflect rather than absorb the Sun's rays. Desert mammals also depart from the normal mammalian practice of maintaining a constant body temperature. Instead of trying to keep down the body temperature deep inside the body, which would involve the expenditure of water and energy, desert mammals allow their temperatures to rise to what would normally be fever height, and temperatures as high as 46 degrees Celsius have been measured in Grant's gazelles. The overheated body then cools down during the cold desert night, and indeed the temperature may fall unusually low by dawn, as low as 34 degrees Celsius in the camel. This is an advantage since the heat of the first few hours of daylight is absorbed in warming up the body, and an excessive buildup of heat does not begin until well into the day.

Another strategy of large desert animals is to tolerate the loss of body water to a point that would be fatal for non-adapted animals. The camel can lose up to 30 percent of its body weight as water without harm to itself, whereas human beings die after losing only 12 to 13 percent of their body weight. An equally important adaptation is the ability to replenish (Sheik) this water loss at one drink. Desert animals can drink huge volumes in a short time, and camels have been known to imbibe (吸收) over 100 liters in a few minutes. A very dehydrated person, on the other hand, cannot drink enough water to rehydrate at one session, because the human stomach is not sufficiently big and because a too rapid dilution of the body fluids causes death from water intoxication. The tolerance of water loss is of obvious advantage in the desert, as animals do not have to remain near a water hole but can obtain food from grazing sparse pastures. Desert-adapted mammals have the further ability to feed normally when extremely dehydrated, it is a common experience in people that appetite is lost even under conditions of moderate thirst.

What is the passage mainly about？

A．Animals developed different strategies to survive.

B．Large animals can take strategies to reduce the effect of extreme heat.

C．Animals can tolerate the loss of body water.

D．A very dehydrated person can drink enough water to rehydrate.

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第10题

Rivers are one of our most important natural resources （资源). Many of the world&39;s grea

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

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