题目内容

Water exists ________ ice, snow, steam, etc.


  1. A.
    in form of
  2. B.
    with the form of
  3. C.
    form of
  4. D.
    in the form of
D
水以某种方式存在，表达成in the form of…
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阅读理解

阅读下列短文，然后从各题所给的A、B、C、D四个选项中，选出最佳选项。

　　The plan：turn Mars into a blue world with streams and green fields, and then fill it with creatures from the earth．

　　This idea may sound like something from a science fiction, but it is actually being taken seriously by many researchers．

　　This suggests the future for the “red planet” will be the main topic for discussion at an international conference hosted by NASA this week．Leading researchers as well as science fiction writers will attend the event．It comes as NASA(美国宇航局)is preparing a multi-billion-dollar Mars research program．

　　“Turning Mars into a little earth has long been a topic in science fiction,” said Dr．Michael Meyer, NASA's senior scientist．“Now, with scientists exploring the reality, we can ask what are the real possibilities of changing Mars．”

　　Most scientists agree that Mars could be turned into a little earth, although much time and money would be needed to achieve this goal．But many experts are shocked by the idea．

　　“We are destroying our own world at an unbelievable speed and now we are talking about ruining another planet,” said Paul Murdin from the Institute of Astronomy, Cambridge, UK．

　　Over the past months, scientists have become increasingly confident they will find Martian life forms．Europe and America's robot explorers have found the proof that water, mixed with soil, exists in large amounts on the planet．

　　In addition, two different groups of scientists announced on March 28 that they had found signs of methane(甲烷)in the Martian atmosphere, the gas is a waste product of living creatures and could be produced by microbes(微生物)living in the red planet's soil．

　　But scientists such as Dr．Lisa Pratt, a biologist at Indiana University, say that these microbes will be put in danger by the little earth project．

　　“Before we have even discovered if there is life on Mars, we are talking about carrying out projects that would destroy all these native life forms, all the strange microbes that we hope to find buried in the soil,” said Dr．Pratt．

　　Monica Grady, a planetary scientist at the Natural History Museum, London, shares this view．“We cannot risk starting a global experiment that would wipe out the precious information we are looking for,” she said．“This is just wrong”．

(1)

According to the passage, besides scientists, ________ are also interested in the future of Mars．

[　　]

A．

the public

B．

science fiction writers

C．

the governments of many countries

D．

news reporters

(2)

The signs of methane in the Martian atmosphere greatly support the view that ________ on Mars．

[　　]

A．

microbes may exist

B．

aliens may exist

C．

water exists

D．

soil exists

(3)

Those who are against the plan are worried that it will ________．

[　　]

A．

turn Mars into a little earth

B．

bring destruction to the planet just as what has happened on the earth

C．

not to carried out

D．

cost too much time and money

(4)

According to Monica Grady, the plan to change Mars ________．

[　　]

A．

should be carried out as soon as possible

B．

should be stopped

C．

may destroy all those native lifeforms before human beings have found if there is life on Mars

D．

could be a waste of time and money

(5)

Which of the headlines is the fittest for the passage?

[　　]

A．

Mars program－a Discussion Plan

B．

Mars Program－Each Scientist Has His own View

C．

Mars Program－Rising Before Us

D．

Mars Program－Challenge to Mankind

The Antarctic Icecap is the largest supply of fresh water，representing nearly 2％of the world’s total of fresh and salt water. As can be seen from the table below, the amount of water in our atmosphere is over 10 times as much as the water in all the rivers taken together. The fresh water actually available for human use in lakes and rivers and the accessible ground water amount to only about one-third of 1％of the world’s total water supply.

 
Surface area(sq mi)
Volume(cu mi)
Percentage of total
Salt water
The oceans
139,500,000
317,000,000
97.2％
Inland    seas    and
saline lakes
270,000
25,000
0.008
Fresh water
Freshwater lakes
330,000
30,000
0.009
All rivers(average level)
－
300
0.0001
Antarctic Icecap
6,000,000
6,300,000
1.9
Arctic Icecap and glaciers
900,000
680,000
0. 21
Water in the atmosphere
197,000,000
3,100
0. 001
Ground water within half
a mile from surface
a mile from surface
－
 
1,000,000
 
0. 31
Deep-lying ground water
－
1,000,000
0. 31
Total (rounded)
－
326,000,000
100.00
【小题1】What’s the best title of this passage?
A．Fresh Water in the WorldB．Water Supply of the World
C．Salt Water of the EarthD．Protection of the Water in the World
【小题2】It can be seen from the table______.
A．humans will have to use sea water in the future
B．there is enough fresh water for man to use
C．Water in the atmosphere is the least
D．the sea water takes up 98％of the water on earth
【小题3】The fresh water that humans can use is _________.
A．about 1,086,700 cu miB．about 6,300,000 cu mi
C．about 680,000 cu miD．about 2,000,000 cu mi
【小题4】Where does the majority of fresh water exists?
A．In Arctic Icecap and glaciers.B．In Deep ground.
C．In the Antarctic Icecap.D．In the atmosphere.
【小题5】What are the two places where equal amount of fresh water is stored?
A．Freshwater lakes and all rivers(average level)
B．Antarctic Icecap and water in the atmosphere
C．Ground water within half a mile from surface and Deep-lying ground water.
D．Deep-lying ground water and Arctic Icecap and glaciers

The Antarctic Icecap is the largest supply of fresh water，representing nearly 2％of the world’s total of fresh and salt water. As can be seen from the table below, the amount of water in our atmosphere is over 10 times as much as the water in all the rivers taken together. The fresh water actually available for human use in lakes and rivers and the accessible ground water amount to only about one-third of 1％of the world’s total water supply.

 

Surface area(sq mi)

Volume(cu mi)

Percentage of total

Salt water

The oceans

139,500,000

317,000,000

97.2％

Inland    seas    and

saline lakes

270,000

25,000

0.008

Fresh water

Freshwater lakes

330,000

30,000

0.009

All rivers(average level)

－

300

0.0001

Antarctic Icecap

6,000,000

6,300,000

1.9

Arctic Icecap and glaciers

900,000

680,000

0. 21

Water in the atmosphere

197,000,000

3,100

0. 001

Ground water within half

a mile from surface

a mile from surface

－

 

1,000,000

 

0. 31

Deep-lying ground water

－

1,000,000

0. 31

Total (rounded)

－

326,000,000

100.00

1.What’s the best title of this passage?

A．Fresh Water in the World                 B．Water Supply of the World

C．Salt Water of the Earth                   D．Protection of the Water in the World

2.It can be seen from the table______.

A．humans will have to use sea water in the future

B．there is enough fresh water for man to use

C．Water in the atmosphere is the least

D．the sea water takes up 98％of the water on earth

3.The fresh water that humans can use is _________.

A．about 1,086,700 cu mi                   B．about 6,300,000 cu mi

C．about 680,000 cu mi                     D．about 2,000,000 cu mi

4.Where does the majority of fresh water exists?

A．In Arctic Icecap and glaciers.               B．In Deep ground.

C．In the Antarctic Icecap.                   D．In the atmosphere.

5.What are the two places where equal amount of fresh water is stored?

A．Freshwater lakes and all rivers(average level)

B．Antarctic Icecap and water in the atmosphere

C．Ground water within half a mile from surface and Deep-lying ground water.

D．Deep-lying ground water and Arctic Icecap and glaciers

 
阅读理解
    The plan: turn Mars into a blue world with streams and green fields, and then fill it with creatures from
the earth.
    This idea may sound like something from a science fiction, but it is actually being taken seriously by
many researchers.
    This suggests the future for the "red planet" will be the main topic for discussion at an international
conference hosted by NASA this Week. Leading researchers as well as science fiction writers will attend
the event. It comes as NASA(美国宇航局) is preparing a multi-billion-dollar Mars research programme.
    "Turning Mars into a little earth has long been a topic in science fiction," said Dr. Michael Meyer,
NAS A's senior scientist. "Now, with scientists exploring the reality, we can ask what are the real
possibilities of changing Mars."
     Most scientists agree that Mars could be turned into a little earth, although much time and money
would be needed to achieve this goal. But many experts are shocked by the idea.
     "We are destroying our own world at an unbelievable speed and now we are talking about ruining
another planet," said Paul Murdin from the Institute of Astronomy, Cambridge, UK.
     Over the past months, scientists have become increasingly confident they will find Martian life forms.
Europe and America's robot explorers have found the proof that water, mixed with soil, exists in large
amounts on the planet.
     In addition, two different groups of scientists announced on March 28 that they had found signs of
methane(甲烷) in the Martian atmosphere, the gas is a waste product of living creatures and could be
produced by microbes(微生物)living in the red planet's soil.
    But scientists such as Dr. Lisa Pratt, a biologist at Indiana University, say that these microbes will be
put in danger by the little earth project.
    "Before we have even discovered if there is life on Mars, we are talking about carrying out projects
that would destroy all these native life forms, all the strange microbes that we hope to find buried in the
soil," said Dr. Pratt.
    Monica Grady, a planetary scientist at the Natural History Museum, London, shares this view. "We
cannot risk starting a global experiment that would wipe out the precious information we are looking for,"
she said. "This is just wrong".

1. A plan for changing the present state of Mars_________.

A. has been made              
B. will be put into practice
C. has been given up            
D. is being argued about

2. According to the passage, besides scientists, _____are also interested in the future of Mars.

A. the public                      
B. science fiction writers
C. the governments of many countries  
D. news reporters

3. The signs of methane in the Martian atmosphere greatly support the view
    that _______

on Mars.
A. microbes may exist  
B. there may be aliens  
C. water exists
D. there is soil

4. Those who are against the plan are worried that it will ________________.

A. turn Mars into a little earth    
B. not be carried out
C. bring destruction to the planet just as what has happened on the earth
D. cost too much time and money

5. Which of the headlines is the fittest for the passage?

A. Mars Programme-a Disastrous Plan
B. Mars Programme- Each Scientist Has His Own Way
C. Mars Programme-Rising Before Us
D. Mars Programme-Challenge to Mankind

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