A. troops B. tricks C. tyres D. traps ercial B. complictated C. conventional D. contemporary 查看更多

 

题目列表(包括答案和解析)

 Many people believe the glare(炫目的光)from snow causes snowblindness. Yet, with dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snowblindness ,when exposed to several hours of“snow light”.

  The United States army has now determined that glare from snow does not cause snowblindness in troops in a snow-covered country. Rather, a man’s eyes frequently find nothing to focus on(聚集)in a broad space of snow-covered without-grass land. So his gaze continually moves and jumps back and forth over the entire landscape in search of something to look at. Finding something, hour after hour, the eyes never stop searching and the eyeballs become tired and the eye muscles ache. Nature makes up for this discomfort by producing more and more fluid(流体)which covers the eyeball. The fluid covers the eyeball in increasing quantity until it makes eyes difficult to see dearly, and the result is total, even though for a short time, snowblindness.

  Experiments led the Army to a simple method of overcoming this problem. Scouts(侦察兵)ahead of the troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark-colored objects ahead on which they can focus too. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop searching the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snowblind or lost. In this way the problem of crossing a continuous white land is overcome.

To prevent snowblindness caused by the strong light from snow, wearing glasses or not _____.

  A. depends on whether the snow is white enough     B. makes no difference

  C. makes much difference                      D. depends on whether the snow is thick

When the eyes are tired, tears flow out ______.

  A. to clear the vision                             B. to make the eyes stop searching

  C. to make the vision unclear                      D. to produce more and more liquid

Snowblindness can be avoided ________.

  A. by moving one’s gaze back and forth

  B. by walking ahead and keeping looking around

  C. by making up for the discomfort of one’s eyes

  D. by providing the eyes with something to focus on

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阅读理解

  Santa Fe, the capital of New Mexico, USA, is in the central part of the state, on the Santa Fe River, which flows into the Rio Grands 35 kilometres west of the city.More than two thousand metres above sea level, it lies in the Sangre de Cristo Mountains with the Ortiz Mountains to the southeast.

  Santa Fe was founded in 1609 by the Spanish in an old Indian village.In 1680 the Indians seized the place but only held it for twelve years before the Spanish retook it.The city remained under Spanish rule until Mexico won its independence in 1821.From then on it was a Mexico city until 1846 when it was taken over by US troops.

  With a population of 48,953, Santa Fe is now the second largest city in the state.Because of its sunny weather, rich history and surrounding mountains, it is a good place for holiday makers.Besides hunting and skating in the mountains people enjoy shopping in the Indian and Spanish shops, which brings a large income to the city every year.In summer there is an international opera season when operas are shown in a partly-roofed, open-air theatre daily for people from all over the world.

(1)

At present Santa Te belongs to ________.

[  ]

A.

India

B.

Mexico

C.

Spain

D.

the United States

(2)

The people who held Santa Fe for the longest period in history were the ________.

[  ]

A.

Spanish

B.

Indians

C.

Mexicans

D.

Americans

(3)

What is of special interest to people who visit Santa Fe in summer?

[  ]

A.

Hunting

B.

Fishing

C.

Watching opera

D.

Doing shopping

(4)

Santa Fe is best described(描述)as a ________.

[  ]

A.

trade centre

B.

holiday centre

C.

home for all nations

D.

seaport city

(5)

One of the reasons for visitors to come to Santa Fe is that it ________.

[  ]

A.

has fine weather

B.

is the state capital

C.

has historical monuments

D.

is on the Santa Fe River

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The French Revolution broke out in 1789. At the time France was in a crisis. The government was badly run and people's lives were miserable. King Louis XIV tried to control the national parliament and raise more taxes. But his effort failed. He ordered his troops to Versailles. The people thought that Louis intended to put down the Revolution by force. On July 14, 1789, they stormed and took the Bastille, where political prisoners were kept. Ever since that day, July 14 has been the French National Day. Louis tried to flee the country in 1792, to get support from Austria and Prussia. However, he was caught and put in prison. In September 1792, the monarchy(君主制) was abolished_. In the same year, Louis was executed. A few months later his wife, Marie also had her head cut off. The Revolution of France had frightened the other kings of Europe. Armies from Austria and Prussia began to march against France. The French raised republican armies to defend the nation. The Revolution went through a period of terror. Thousands of people lost their lives. In the end, power passed to Napoleon Bonaparte.

1.What's this passage about?

A.France.                              B.King Louis.

C.The French Revolution.                   D.Europe.

2.Which did not happen in 1789?

A.The French Revolution broke out.

B.The national economy was developing rapidly.

C.The government wasn't well run.

D.King Louis XIV was in power.

3. What does the underlined word "abolished" mean?

A.Put off.

B.Established.

C.United.

D.Ended.

4.What was NOT the effect of the Revolution?

A.July 14 has become the French National Day.

B.It brought some impact on the other European kings.

C.Louis's wife, Marie was killed.

D.The king tried to control the national parliament.

 

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The French Revolution broke out in 1789. At the time France was in a crisis. The government was badly run and people's lives were miserable. King Louis XIV tried to control the national parliament and raise more taxes. But his effort failed. He ordered his troops to Versailles. The people thought that Louis intended to put down the Revolution by force. On July 14, 1789, they stormed and took the Bastille, where political prisoners were kept. Ever since that day, July 14 has been the French National Day. Louis tried to flee the country in 1792, to get support from Austria and Prussia. However, he was caught and put in prison. In September 1792, the monarchy(君主制) was abolished_. In the same year, Louis was executed. A few months later his wife, Marie also had her head cut off. The Revolution of France had frightened the other kings of Europe. Armies from Austria and Prussia began to march against France. The French raised republican armies to defend the nation. The Revolution went through a period of terror. Thousands of people lost their lives. In the end, power passed to Napoleon Bonaparte.
【小题1】What's this passage about?

A.France. B.King Louis.
C.The French Revolution.D.Europe.
【小题2】Which did not happen in 1789?
A.The French Revolution broke out.
B.The national economy was developing rapidly.
C.The government wasn't well run.
D.King Louis XIV was in power.
【小题3】 What does the underlined word "abolished" mean?
A.Put off.
B.Established.
C.United.
D.Ended.
【小题4】What was NOT the effect of the Revolution?
A.July 14 has become the French National Day.
B.It brought some impact on the other European kings.
C.Louis's wife, Marie was killed.
D.The king tried to control the national parliament.

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 Many people believe the glare(炫目的光)from snow causes snowblindness. Yet, with dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snowblindness ,when exposed to several hours of“ snow light”.

  The United States army has now determined that glare from snow does not cause snowblindness in troops in a snow -covered country. Rather ,a man’s eyes frequently find nothing to focus on (聚集) in a broad space of snow- covered without- grass land. So his gaze continually moves and jumps back and forth over the entire landscape in search of something to look at. Finding something, hour after hour, the eyes never stop searching and the eyeballs become tired and the eye muscles ache. Nature makes up for this discomfort by producing more and more fluid (流 体) which covers the eyeball. The fluid covers the eyeball in increasing quantity until it makes eyes difficult to see dearly, and the result is total, even though for a short time, snowblindness.

  Experiments led the Army to a simple method of overcoming this problem. Scouts(侦察兵)ahead of the troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow - covered landscape. Even the scouts themselves throw lightweight, dark - colored objects ahead on which they can focus too. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop searching the snow -blanketed landscape. By focusing their attention on one object at a time. the men can cross the snow without becoming hopelessly snowblind or lost. In this way the problem of crossing a continuous white land is overcome.

To prevent snowblindness caused by the strong light from snow, wearing glasses or not ________.

  A. depends on whether the snow is white enough

  B. makes no difference

  C. makes much difference

  D. depends on whether the snow is thick

When the eyes are tired, tears flow out ________.

  A. to clear the vision

  B. to make the eyes stop searching

  C. to make the vision unclear

  D. to produce more and more liquid

Snowblindness can be avoided ________.

  A. by moving one’s gaze back and forth

  B. by walking ahead and keeping looking around

  C. by making up for the discomfort of one’s eyes

  D. by providing the eyes with something to focus on

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