Humanity uses a little less than half the water available worldwide. Yet occurences of sho - 试题答案网问答

第1题

We can learn from Paragraph 1 that______.A．Canadian government uses the cyber-posters to f

We can learn from Paragraph 1 that______.

A．Canadian government uses the cyber-posters to find the war criminals

B．30 war criminals had been arrested since being wanted by the government

C．people against humanity are no longer severely punished in Canada today

D．a Canadian murderer"s information can also be found on the Internet

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第2题

The history of technology is at least as old as humankind, if not older. Primitive too

ls have been discovered with almost every find of ancient human remains. Archaeologists (考古学家)have uncovered tools made by humanity's ancestors more than two million years ago, and the earliest direct evidence of tool usage, found in the Great Rift Valley, dates back to 2.5 million years ago. The hunter-gatherer lifestyle, characteristic of the Lower Paleolithic era, involved a limited use of technology, and the earliest tools, were developed to aid early humans in that role.

The discovery and utilization of fire, a simple energy source with many profound uses, was a turning point in the technological evolution of mankind. The exact date of its discovery is not known; evidence of burnt animal bones at the Cradle of Humankind suggests that the domestication of fire occurred before 1,000,000BCE; scholarly consensus indicates that Homo erectus had controlled fire by between 500,000BCE and 400,000BCE. Fire, fueled with wood and charcoal, allowed early humans to cook their food to increase its digestibility, thereby improving its nutrient value and broadening the number of foods that could be eaten.

Other technological advances made during the Paleolithic (旧石器时代的)era were clothing andshelter; the adoption ofboth technologies cannot be dated exactly, but they were key to humanity's progress.

As the Paleolithic era progressed, dwellings became more sophisticated and more elaborate; as early as 380,000BCE, humans were constructing temporary wood huts. Clothing, adapted from the fur and hides of hunted animals, helped humanity expand into colder regions; humans began to migrate out of Africa by 200,000BCE and into other continents.

1.Which of the following statements is NOT true about the tools？()

A.The earliest tools were developed to aid early humans.

B.The earliest direct evidence of tool usage dates back to 2.5 million years ago.

C.The history of primitive tools is older than humankind.

D.Archaeologists have uncovered tools made more than two million years ago.

2.The turning point in the technological evolution of mankind is.()

A.the use of primitive tools by humanity ancestors

B.the adaptation of clothing from the fur and hides of hunted animals

C.the discovery and utilization of fire

D.the construction of temporary wood huts

3.The technological advances in clothing and shelter.()

A.were very important to humanity's progress

B.can be dated exactly

C.can be dated as early as 380,000BCE

D.helped people to move to any places they like

4.Which of the following can best replace the word "hides” in the third paragraph？()

A.leathers

B.hairs

C.places

D.skins

5.Which of the following is the best title for this passage？()

A.The discovery and utilization of fire.

B.The discovery of primitive tools.

C.The prehistory of technology.

D.The technological evolution of mankind.

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第3题

coo（l） ; litt（le）（）

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第4题

Humanity uses a little less than half the water available worldwide. Yet occurrences of sh

ortages and droughts (干旱) are causing famine and distress in some areas, and industrial and agricultural by-products are polluting water supplies. Since the world's population is expected to double in the next 50 years, many experts think we are on the edge of a widespread water crisis.

But that doesn't have to be the outcome. Water shortages do not have to trouble the world--if we start valuing water more than we have in the past. Just as we 'began to appreciate petroleum more after the 1970s oil crises, today we must start looking at water from a fresh economic perspective. We can no longer afford to consider water a virtually free resource of which we can use as much as we like in any way we want.

Instead, for all uses except the domestic demand of the poor, governments should price water to reflect its actual value. This means charging a fee for the water itself as well as for the supply costs.

Governments should also protect this resource by providing water in more economically and environmentally sound ways. For example, often the cheapest way to provide irrigation (灌溉) water in the dry tropics is through small-scale projects, such as gathering rainfall in depressions (凹地) and pumping it to nearby cropland.

No matter what steps governments take to provide water more efficiently, they must change their institutional and legal approaches to water use. Rather than spread control among hundreds or even thousands of local, regional, and national agencies that watch various aspects of water use, countries should set up central authorities to coordinate water policy.

What is the real cause of the potential water crisis？

A．Only half of the world's water can be used.

B．The world population is increasing faster and faster.

C．Half of the world's water resources have been seriously polluted.

D．Humanity has not placed efficient value on water resources.

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第5题

littérature一词读音有几个音节？（）

A.3个

B.4个

C.5个

D.6个

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第6题

Passage Three：Questions 21 to 25 are based on the following passage.Humanity uses a little

less than half the water available worldwide. Yet occurrences of shortages and droughts (干旱) are causing famine and distress in some areas, and industrial and agricultural by-products are polluting water supplies. Since the world’ population is expected to double in the next 50 years, many experts think we are on the edge of a widespread water crisis.

But that doesn’t have to be the outcome. Water shortages do not have to trouble the world—if we start valuing water more than we have in the past. Just as we began to appreciate petroleum more after the 1970s oil crises, today we must start looking at water from a fresh economic perspective. We can no longer afford to consider water a virtually free resource of which we can use as much as we like in any way we want.

Instead, for all uses except the domestic demand of the poor, governments should price water to reflect its actual value. This means charging a fee for the water itself as well as for the supply costs.

Governments should also protect this resource by providing water in more economically and environmentally sound ways. For example, often the cheapest way to provide irrigation (灌溉) water in the dry tropics is through small-scale projects, such as gathering rainfall in depressions (凹地) and pumping it to nearby cropland.

No matter what steps governments take to provide water more efficiently, they must change their institutional and legal approaches to water sue. Rather than spread control among hundreds or even thousands of local, regional, and national agencies that watch various aspects of water use, countries should set up central authorities to coordinate water policy.

第21题：What is the real cause of the potential water crisis？

A) The world population is increasing faster and faster.

B) Half of the world’s water resources have been seriously polluted.

C) Humanity has not placed sufficient value on water resources.

D) Only half of the world’s water can be used.

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第7题

In the view of biologist Lewontin, intelligenceA．was a matter of genetic traits.B．had litt

In the view of biologist Lewontin, intelligence

A．was a matter of genetic traits.

B．had little to do with environments.

C．could be improved with human efforts.

D．was profoundly affected by inheritance.

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第8题

During the winter time, we sometimes get______six or seven tourist groups a week.A．as litt

During the winter time, we sometimes get______six or seven tourist groups a week.

A．as little as

B．a great deal of

C．as few as

D．a number of

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第9题

A．It's too broad to cope with.B．It's a bit outdate.C．It's controversial.D．It's of litt

A．It's too broad to cope with.

B．It's a bit outdate.

C．It's controversial.

D．It's of little practical value.

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第10题

Handheld wireless phones are popular with most people because______.A．they send out a litt

Handheld wireless phones are popular with most people because______.

A．they send out a little amount of watt of power

B．they have many cool shapes and colors

C．they are small and light

D．they are easy to buy on market

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