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

B
　　Although man has known asbestos for many hundreds of years, it was not until 160 years ago that it was mined for the first time on the North American continent. H. W. Johns, owner of a New York City Supply Shop for roofers, was responsible for he opening of that first mine.
　　Mr. Johns was given a piece of asbestos which had been found in Italy. He experimented with the material and then showed its surprising powers to his customers. After putting on a pair of asbestos gloves, which looked much like ordinary work gloves, he took red-hot coals from the fireplace and played with them in his hands. How astonished the customers were to discover that he was not burned at all. You can well imagine that he had increasing business in asbestos roofing materials. However, because it was very expensive to transport them from Italy to the United States, Mr. Johns sent out a young scientist to seek a source nearer home. This young man found great vein in the province of Quebec in Canada.
　　Ever since 1881 Quebec has led the world in the production of this unusual mineral, which is made up of magnesium, silicon, iron, and oxygen. When it is mined, the asbestos is heavy, just as you would expect a mineral to be. When it is separated, a strange thing happens; the rock breaks down into fine, soft, soapy fibers .
　　Scientists do not know why the rock can be separated easily into threads,but they have found thousands of uses of this fireproof material, of the so-called “cloth of stone”.
　60. Which title best expresses the main idea of this passage?
　   A. Asbestos mined in Canada                  B. Fireproof matter
C. A “wonder” mineral                           D. A new roofing material
　61. Johns proved his ability as a salesman by_______.
　   A. going into roofing business              
B. carrying asbestos from Italy
　   C. sending a trained scientist                 
D. showing the use of asbestos gloves
　62. Which is the most important character of asbestos that the author wants to show us?
　   A. It is like thread.                               B. It feels soapy.
C. It burns easily.                                 D. It is unusually heavy.
　63. The author’s main purpose in writing this passage was to _______.
　   A. show the need for more scientists
　   B. compare asbestos with other minerals
　   C. increase the sales of asbestos
　   D. present facts about asbestos

　　                                C
Among the more colorful characters of Leadville’s golden age were H.A.W. Tabor and his second wife, Elizabeth McCourt, better known as "Baby Doe". Their history is fast becoming one of the legends of the Old West. Horace Austin Warner Tabor was a school teacher in Vermont. With his first wife and two children he left Vermont by covered wagon in 1855 to homestead in Kansas. Perhaps he did not find farming to his liking, or perhaps he was attracted by rumors of fortunes to be made in Colorado mines. At any rate, a few years later he moved west to the small Colorado mining camp known as California Gulch, which he later renamed Leadville when he became its leading citizen. "A large amount of lead is sure to be found here." he said.  
　　As it turned out, it was silver, not lead, that was to make Leadville’s fortune and wealth. Tabor knew little about mining himself, so he opened a general store, which sold everything from boots to salt, flour, and tobacco. It was his custom to "grubstake" prospective（预期的） miners, in other words, to supply them with food and supplies, or"grub", while they looked for ore（矿石）, in return for which he would get a share in the mine if one was discovered. He did this for a number of years, but no one that he aided ever found anything of value.
　　Finally one day in the year 1878, so the story goes, two miners came in and asked for "grub". Tabor had decided to quit supplying it because he had lost too much money that way. These were persistent（坚持的）, however, and Tabor was too busy to argue with them. "Oh help yourself. One more time won’t make any difference," He said and went on selling shoes and hats to other customers. The two miners took $17 worth of supplies, in return for which they gave Tabor a one-third interest in their findings. They picked a barren place on the mountainside and began to dig. After nine days they struck a rich vein of silver. Tabor bought the shares of the other two men, and so the mine belonged to him alone. This mine, known as the "Pittsburgh Mine," made $1,300, 000 for Tabor in return for his $17 investment.
　　Later Tabor bought the Matchless Mine on another barren hillside just outside the town for $117,000.This turned out to be even more abundant than the Pittsburgh, producing $35 000 worth of silver per day at one time. Leadville grew. Tabor became its first mayor, and later became the governor of the state.  
49. The word "grubstake" in paragraph 2 means __________ .
　A. to supply miners with food and supplies
　B. to open a general store
　C. to do one’s contribution to the development of the mine
　D. to supply miners with food and supplies and in return get a share in the mine, if one was discovered
50.Tabor made his first fortune_________.
　A. by supplying two prospective miners and getting in return a one-third interest in the findings
　B. because he was persuaded by the two miners to quit supplying
　C. by buying the shares of the other
　D. as a land speculator（投机商）
51. The underlying（潜在的）reason for Tabor’s successful life career is __________.
　  A. purely accidental
B. based on the analysis of miner’s being very poor and their possibility of discovering
profitable mining site
C. through the help from his second wife
　　D. he planned well and accomplished targets step by step
52. If this passage is the first part of an article, who might be introduced in the following  part?
A. Tabor’s life.     　　                        B. Tabor’s second wife, Elizabeth McCourt.
　　C. Other colorful characters.　　         D. Tabor’s other careers.　　

The first people who gave names to hurricanes were those who knew them best — the people of Puerto Rico. The small island of Puerto Rico is in the West Indies, off the coast of Florida. This is where all the hurricanes begin that strike the east coast of the United States. Often they pass near Puerto Rico or cross it on their way north. The people of Puerto Rico expect some of these unwelcome visitors every year. Each one is named after the Saint’s Day on which it arrives. Two of the most destructive storms were the Santo Ana in 1840 and the San Ciriaco in 1899.

Giving girls’ names to hurricanes is a fairly new idea. It all began with a story called “Storm”, written by George Stewart in 1941. In it a weatherman amused himself by naming storms after girls he knew. He named one Maria. The story describes how she Maria grew and developed, and how she changed the lives of people when she struck the United States.

Weathermen of the U.S. Army and Navy used the same system during World WarⅡ. They were studying weather conditions over the Pacific Ocean. One of their duties was to warn American ships and planes when a storm was coming. Whenever they spotted one, they gave it a girl’s name. The first one of the year was given a name beginning with [A]. The second one got a name beginning with [B]. They used all the letters from A to W, and still the storms kept coming. They had to use three lists from A to W to have enough names to go around. This was the first list of hurricane names that followed the alphabet. It served as a model for the system the Weather Bureau (局) introduced in 1942.

　　Before 1950 the Weather Bureau had no special system for naming hurricanes. When a hurricane was born down in the West Indies, the Weather Bureau simply collected information about it. It reported how fast the storm was moving and where it would go next. Weather reports warned people in the path of the hurricane, so that they could do whatever was necessary to protect themselves.

　　This system worked out fine as long as weather reports talked about only one hurricane at a time. But one week in September 1950 there were three hurricanes at the same time. The things began to get confused. Some people got the hurricanes mixed up and didn’t know which was which. This convinced the Weather Bureau that it needed a code for naming the storms in order to avoid confusion in the future.

Hurricanes were first named after the _________.

       A. date on which they occurred　 B. place where they began

　    C. amount of destruction they did　     D. particular feature they have

The practice of giving girls’ names to hurricanes was started by _________.

　    A. a radio operator       B. an author                 C. a sailor              D. local people

The purpose for which weathermen of the army and navy began using girls’ names for hurricanes was ________.

　    A. to keep information from the enemy      B. to follow the standard method of the United States

　    C. not given in the article　  D. to remember a certain girl

The Weather Bureau began naming hurricanes because it would help them _________.

　    A. collect information more rapidly　  B. warn people more efficiently

　    C. make use of military (军事的) records　 D. remember them

I’m lying on my back in my grandfather’s orchard(果园)，looking up at the branches above me.It is one of the last days of summer.Already the days are shorter and the nights are cooler.Some kinds of apples are already ripe(成熟的).Others will be ready to pick soon.I think of my grandmother’s apple pie，and how I used to make it with her.She died last year，before the apple harvest，and I have not had her pie since.I really miss her.I hear bees busily humming about，visiting the late summer flowers.The gentle hum of their wings nearly sends me to sleep.

The sky is as blue as my grandfather’s eyes.Above me，big white clouds race across the sky like pieces of cotton blowing in the w ind.School starts in another week，and time seems to have slowed down.

“Sophie！”calls my  grandfather.“Is that you？”I stand up，take his hand，and tell him all about my day as we walk through the orchard.We talk about apples，and bees，and Grandma.He tells me that he misses her too.

He puts his rough，brown farmer’s hand around my shoulder and pulls me close.“You know，Sophie，”he says，“I spent the morning in the attic(阁楼)，and you’ll never guess what I found.It’s the recipe(烹饪法) for Grandma’s apple pie.I used to help her make it sometimes.I can’t do it all alone，but you used to help her too.Maybe between the two of us，we ca n work it out.Want to try？”

“But it won’t be the same without Grandma，” I tell him.

“That’s true，”he says，“but nothing_is_the_same_without_Grandma.Still，I don’t think that she would want us never to have another apple pie.What do you say？” I nod yes，and we walk towards home...towards an afternoon in the farmhouse kitchen，making Grandma’s famous apple pie.

1.We learn from the passage that Sophie　　　　.

A．likes to watch clouds in the attic

B．comes to the orchard after school

C．enjoys Grandma’s apple pie very much

D．picks many apples in the orchard

2.Sophie’s grandfather spent the morning in the attic______　　　.

A．looking for Grandma’s recipe for apple pie

B．helping Sophie’s grandmother make apple pie

C．trying to make apple pie all alone for Sophie

D．talking about apples，and bees，and Grandma with Sophie

3.The underlined part in the last paragraph shows

A．how much Sophie’s grandmother loved Sophie

B．how much Sophie’s grandfather likes apple pies

C．how much Sophie loves her grandfather’s orchard

D．how much Sophie’s grandfather misses Grandma

4.Which of the following might be the best title for the passage?

A．My grandfather’s orchard           B．My grandmother’s apple pie

C．A morning in the attic              D．The last days of summer