From snow-clogged mountain roads to desert highways, freeways to crowded city streets, Californians face a variety of tough driving conditions. But thanks to savvy driving, they consume proportionately less gasoline the rest of the nation. Here, some tips from the Golden State that will help drivers all over the country to get up to 25% more miles per gallon! By SUSAN NESTOR
FREEWAY FRENZY
● Try to maintain a steady speed — especially on freeways and expressways. Never exceed a steady 55 mph. Varying speed by as little as 5mph can reduce mileage by 1.5 miles per gallon. Avoid constant lane changes to “get ahead.”
● Buy radial tyres. If you do a lot of expressway driving, they can increase mileage by as much as 10%. Your fuel savings will pay for the higher tyre price.
ON CITY STREETS
● Plan your route. City driving consumes about 50% more fuel than highway driving (100% more in crowed traffic). Always choose a route with synchronized traffic signals to get the best run for your money.
● Avoid unnecessary braking. Anticipate（预期）traffic light changes; it takes a lot of extra gas to get the car up to speed again.
COLD
● In winter, keep the car in a garage. It will start up easier, and start-up time is when you use the most gasoline. No garage? Cover the engine compartment with an old blanket or rug to shield it from cold winds; remove before starting up.
● Remove all ice and snow. Driving in snow consumes more gas anyway; no sense hauling around extra weight.
65. All these above are ______ for drivers.
A. notices B. tips C. lessons D. advertisements
66. Highway driving can use about ______ fuel than city driving.
A. 20% more B. 20% less C. 50% more D. 50% less
67. Which of the following is TRUE?
A. In winter, you will have difficulty starting up a car if it is kept in a garage.
B. Drivers should avoid necessary breaking and constant lane changes.
C. A steady 65 mph is the ideal speed to save gasoline.
D. Radial tyres can help increase mileage in expressway driving.
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本土教辅赢在暑假高效假期总复习云南科技出版社系列答案科目：高中英语 来源：西藏拉萨中学2009-2010学年高二第五次月考试题（英语） 题型：阅读理解
Many people believe the glare from snow causes snowblindness. Yet, 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. A man's eyes frequently find nothing to focus on in a broad expanse of barren snow-covered terrain(地域). So his long look continually moves and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and eyeballs become sore and the eye muscles ache. Nature offers this discomfort by producing more and more liquid which covers the eyeball. The liquid covers the eyeball in increasing quantity until vision became not clear, and then is not easily seen and the result is total, even though not very long, snowblindness.
Experiments led the Army to a simple method of solving this problem. Scouts, ahead of a main body of 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 too can focus. The men following can then see something. Their eyes focus on a bush and have something to see. 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 solid white terrain is solved.
1. The first paragraph is mainly concerned with ________.
A. need for dark glasses
B the whiteness from snow
C. headaches, watering eyes and snowblindness
D. snow glare and snowblindness
2. According to the author, recent work on snowblindness shows that it is caused by ________.
A. exposure to bright light
B. failure to focus on an object
C. a loss of vision which doesn't last long
D. focusing on dark colored objects for a very long time
3. Suppose you walk across a completely snow-covered area, what should you do to solve the problem of snowblindness?
A. By wearing dark sun glasses.
B. By throwing an extra pair of black shoes ahead.
C. By asking the Army for help.
D. By walking backwards.
4. A suitable title for this passage would be ________.
A. Snowblindness and How to avoid it B. Soldiers in Snow
C. Nature's Cure for Snowblindness D. Snow Vision
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科目：高中英语 来源：2013-2014学年四川仪陇县第二中学高二9月月考卷（解析版） 题型：单项填空
food and vegetables southern China where people have being suffered from snow storms since mid-January.
A. Large quantities of; are sent to
B. A large quantity of; are sent to
C. Plenty of; is sent to
D. A great deal of; are sent to
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科目：高中英语 来源：2014届黑龙江省高二上学期期末考试英语试卷（解析版） 题型：阅读理解
Much of the water we use comes from snow. Melting snow provides water for rivers, electric power centers and agricultural crops. In the western United States, mountain snow provides up to 75% of all surface water supplies.
Snowfall helps to protect plants and some wild animals from cold, winter weather. Fresh snow is made largely of air trapped among the snow crystals. Because the air has trouble moving, the movement of heat is greatly reduced.
Snow also is known to influence the movement of sound waves. When there is fresh snow on the ground, the surface of the snow takes in, or absorbs, sound waves. However, snow can become hard and flat as it becomes older or if there have been strong winds. Then the snow's surface will help to send back sound waves. Under these conditions, sounds may seem clearer and travel farther.
Generally, the color of snow and ice appears white. This is because the light we see from the sun is white. Most natural materials take in some sunlight. This gives them their color. However, when light travels from air to snow, some light is sent back, or reflected. Snow crystals have many surfaces to reflect sunlight. Yet the snow does take in a little sunlight. It is this light that gives snow its white appearance.
Sometimes, snow or ice may appear to be blue. The blue light is the product of a long travel path through the snow or ice. In simple terms, think of snow or ice as a filter. A filter is designed to reject some substances, while permitting others to pass through. In the case of snow, all the light makes it through if the snow is only a centimeter thick. If it is a meter or more thick, however, blue light often can be seen.
1.How many functions of snow are discussed in the passage?
A．One B．Two C．Three D．Four
2.Why does snowfall help to protect plants from cold?
A．Because snow crystals contain heat.
B．Because snow crystals have air in them.
C．Because snow crystals are easy to blow away.
D．Because snow crystals send out heat when melting.
3.It can be inferred that ______.
A．hard snow is better in protecting wild animals than fresh snow
B．fresh snow is better in sending sound waves than hard snow
C．fresh snow is better in taking in sound waves than hard snow
D．hard snow provides less water than fresh snow
4.The color of snow and ice appears white because snow crystals________.
A．send back none of the sunlight B．send back all of the sunlight
C．take in most of the sunlight D．take in some of the sunlight
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科目：高中英语 来源：2012-2013学年安徽省合肥市高三第一次教学质量检测英语试卷（解析版） 题型：阅读理解
Snow falls in the Earth’s extreme North and South throughout the year. However， the heaviest snowfalls have been reported in the mountains of other areas during winter. Snow is even known to fall near the Equator (赤道)，but only on the highest mountains.
Snow contains much less water than rain, but much of the water the world uses comes from snow. Melting snow provides water for rivers, electric power stations and agricultural crops. In the western United States, mountain snow provides up to seventy-five percent of all surface water supplies.
Snowfall helps to protect plants and some wild animals from winter weather. Fresh snow is made largely of air trapped among the snow crystals (晶体). Because the air has trouble moving, the movement of heat is limited. Snow also influences the movement of sound waves. The surface of the snow takes in, or absorbs, sound waves. As snow grows older or if there have been strong winds, it can become hard and flat. Then, the snow，s surface will help to send back sound waves.
Snow may be beautiful, but it can be deadly. It is responsible for the deaths of hundreds of people. Many people die in traffic accidents on roads covered with snow and ice or from being seriously stuck in the winter storm. Others die from heart attacks caused by too much physical activity out in the cold.
People may not be able to avoid living in areas where it snows often. However, they can avoid becoming victims of snowstorms. People should stop driving and stay at home until the storm has passed. People living in these areas should carry emergency supplies in their vehicle. These include food，emergency medical supplies，and extra clothing to stay warm and dry.
1.Mountain snowfall _____.
A．is heavier than that in the South and the North Poles
B．has never occurred near the Equator of the earth
C．brings less of the water the world uses than rain does
D．provides up to seventy—five percent of water supplies worldwide
2.Snow protects plants and wild animals from cold weather by _____.
A．supplying much more air B．limiting heat movement
C．absorbing strong winds D．sending back sound waves
3.Snow can be deadly mainly because it can _____.
A．cause road accidents
B．make people stuck in winter storms
C．lead to heart attacks
D．make people victims of snowstorms
4.What will the text probably tell us following the last paragraph? _.
A．How to drive during snowstorms
B．Where we can get emergency supplies
C．How to prevent heart attacks out in cold
D．Why we should stay warm and dry in winter
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科目：高中英语 来源：广东省普宁市20092010学年高一上学期必修三水平测试试卷（英语） 题型：阅读理解
Many people believe the glare from snow causes snow-blindness. Yet, dark glasses or not , they find themselves suffering from headaches and watering eyes, and even snow-blindness, when exposed to several hours of “snow light”. The United States Army has now determined that glare from snow does not cause snow-blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of barren (少植被的) snow-covered terrain (地形). So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscles ache. Nature eases this irritation by producing more fluid which covers the eyeball. The fluid covers the eyeball in increasing quantity until vision blurs (模糊), then is obscured (遮蔽), and the result is total, even though temporary, snow-blindness.
Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of 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 too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop scouring the snow-blanketed landscape. By focusing their attention on one object at a time, the men can cross the snow without becoming hopelessly snow-blind or lost. In this way the problem of crossing a solid white terrain is overcome.
1. To prevent headaches, watering eyes and blindness caused by the glare from snow, dark
glasses are _________.
A. indispensable and essential B. useful C. ineffective D. available
2. When the eyes are sore tears are produced to _________.
A. balance the pain B. treat snow-blindness
C. clear the vision D. loosen the muscles
3. Snow-blindness may be avoided by _________.
A. concentrating on the solid white terrain
B. searching for something to look at in snow-covered terrain
C. providing the eyes with something to focus on
D. covering the eyeballs with more fluid
4. The scouts shake snow from evergreen bushes in order to _________.
A. prevent the men behind losing their way
B. beautify the landscape of the terrain
C. warm themselves in the severe cold
D. give the men behind something to see
5. A suitable title for this passage would be _________.
A. nature's cure for snow-blindness B. snow-blindness and how to overcome it
C. soldiers marching in the snow D. snow vision and its effect on eyesight
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