We use air conditioners to keep rooms cool in summer.（保持原句意思）

We use air conditioners ________ ________ rooms cool in summer.
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科目：初中英語(yǔ) 來(lái)源： 題型：閱讀理解

The world is not only hungry but also thirsty for water. This may seem strange to you, since nearly 70% of the earth’s surface is covered with water. But about 97% of that is sea water or salt water. Man can only drink and use the other 3% of fresh water from rivers, lakes, underground and so on. And we can not even use all of that because some of it has been made dirty.
Earth Day is April 22. But on all other days, we must also remember how important water is. The water that we use is the most important natural resource on the earth. Today we face serious water problems. One of them is water pollution. All kinds of things from cars, factories, farms and homes make our rivers, lakes and oceans dirty. Polluted water is very bad for people to drink. And dirty water is bad for fish, too.
How do cars and factories make our water dirty? First they pollute the air. Then when it rains, the rain water makes our drinking water dirty. Dirty rain, called acid rain is also bad for plants, animals and buildings. Scientists say that in 30 years, more than half of the people in the world won’t have enough clean water. We have to learn how to stop wasting water. One of the first steps is to develop ways of reusing it. Today in most large cities, water is used only once and then sent out into a sewer system (下水道). From there it returns to the sea or goes underground.
But even though every large city reused its water, we would still not have enough. So we should make use of sea water by removing the salt in it. If we can take these steps, fresh water won’t be used up.
【小題1】The world is thirsty for water because _______.
A．we don’t have enough fresh waterB．a(chǎn) lot of water goes into sewer systems
C．only 70% of the earth’s surface is waterD．sea water is widely used rather than fresh water
【小題2】From this passage, we know acid rain _______.
A．is only bad for living thingsB．is not bad for buildings and factories
C．can be produced in factoriesD．is bad for people, animals, plants and buildings
【小題3】One difficult way we can solve the problem is to _______.
A．use the water with salt in itB．remove the salt from sea water
C．get water from undergroundD．reuse the water in cities
【小題4】What is the best title for this passage?
A．Fresh water and sea waterB．A thirsty country
C．The importance of waterD．The world’s water problem

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科目：初中英語(yǔ) 來(lái)源： 題型：

When the traffic lights turn red, we will stop driving a car or crossing a street. Why is red used for traffic lights instead of other colors?
As we know, scattering(散射) happens when light goes through the air. For the same media(媒質(zhì)), if the wavelength islong, the scattering will be short. If the wavelength is short, then the scattering will be long.
Of all lights we can see red has the longest wavelength, so the scattering is the weakest. That means the red light travels far. In fact, it travels farther on rainy days.
Using the red light can help drivers in farther areas sec the lights. It helps drivers stow down or stop in lime. If drivers don't see the red light until they are close, they may not be able to stop the car in time. An accident may happen Red can also excite people. We can act more quickly when we see the color red. In a word, red lights help drivers stop in time and help prevent accidents.
【小題1】 When the traffic lights turn ______, we will stop driving a car.
A. red    B green     C. yellow
【小題2】According to the passage, the scattering of the red light is the _______.
A. longest    b. weakest       C. farthest
【小題3】 The underlined word "wavelength" means________ in Chinese.
A.波浪        B.光波      C.波長(zhǎng)
【小題4】 What can the red light help drivers do?
A. It can help drivers in farther areas see the lights.
b. It can help drivers slow down or stop in time.
C.A and b
【小題5】Which of the following is the best title?
A. Why do accidents happen
b. How does the red light travel
C. Why do we use red traffic lights

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科目：初中英語(yǔ) 來(lái)源：2011-2012學(xué)年江蘇江陰市長(zhǎng)涇片初二下學(xué)期期中考試英語(yǔ)試卷（帶解析） 題型：閱讀理解


Napoga is a 12-year-old girl in Ghana(加納)，Africa. It is hard for her family to get clean water. Every morning，she leaves home at half past five to get clean water for her family in a village far away. It takes her six hours to get enough clean water for daily cooking and drinking. She has no time to go to school or to play with her friends. Millions of people in the world are like Napoga. They can't get enough clean water to keep healthy.
Earth Day is April 22. But on all other days，we must also remember it. The water we use is the most important natural resource(自然資源) on the earth.
Water covers 70% of the earth's surface. But most of that is sea water. We can't use it for very many things. Fresh water covers only 1% of the earth's surface.
You probably feel lucky that your life isn't as hard as Napoga's. But that doesn't mean you don't have to worry about water. We all face serious water problems. One of them is water pollution. All kinds of things from cars，factories，farms and homes make our rivers，lakes，and oceans dirty. Polluted water is very bad for people to drink. And dirty water is bad for fish，too. Now, 34% of all kinds of fish are dying out.
How do cars and factories make our water dirty？First，they pollute the air. Then，when it rains，the rain water comes down and makes our drinking water dirty. Dirty rain，called acid rain(酸雨)，is also bad for plants，animals and buildings.
Scientists say that in 30 years，more than half of the people in the world won't have enough clean water. We have to learn how to save more water for ourselves and our children. Here is some advice for saving water：
●Turn off the water while you brush your teeth. You can save as much as 450 liters(升) each month.
●Leaky taps(漏水的龍頭) waste a lot of water. Fix them right away！
●You can easily cut your 10-minute showers in half----and you'll be just as clean.
●When you wash dishes，don't let the water run.
●Only wash clothes when you have a lot to wash. If your washing machine isn't full，you're  wasting water！
【小題1】On the earth，_______.

A．sea water is more widely(廣泛地) used than fresh water
B．there is very little water for our living
C．there is 71% of fresh water
D．we don't need to worry about water
【小題2】Acid rain _______.
A．is only bad for living things
B．can be produced in factories
C．doesn't do harm(傷害) to people，but it's bad for plants，animals and buildings
D．doesn't just do harm to human beings but to animals，plants and buildings
【小題3】Which of the following wastes water？
A．We need ten minutes if we want a clean shower.
B．We should put in enough clothes when we wash them in washing machines.
C．You can keep yourself clean by having a shower for five minutes.
D．Don't let the water run when we brush our teeth and wash dishes.
【小題4】What's the main idea of the passage？
A．Something must be done to prevent water from being polluted.
B．Clean water means much to human beings and living things around us.
C．It's time to take care of the water we use.
D．Water is the most important natural resource on the earth.

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科目：初中英語(yǔ) 來(lái)源：2011-2012學(xué)年北京市朝陽(yáng)區(qū)初二下學(xué)期期末考試英語(yǔ)試卷（帶解析） 題型：閱讀理解

For many years scientists have said that the earth is getting warmer. Now they have found something new-hot cities! In the southern US, they have found that cities become very hot in summer. For example, the city of Atlanta in Georgia has roof(屋頂) temperature of up to 50oC while it is 27℃ in the streets! At night, the outside of buildings stays so hot that the heat of the city causes storms over the city!
China also has the same kind of problems. Every year more farmland is used for factories or offices. More housing is needed, too. As people become richer, they buy more cars. New roads are needed and new car parks are built in the city centers. This all makes cities hotter.
It isn’t easy to change the situation. City planners say that we should plant more trees in the middle of cities. Every new street should have trees on both sides, they say. Trees make the temperature lower, so we should have more trees in our parks and squares. We should also paint our roofs white. If we do this, they do not become so hot. Every roof in a hot and sunny country should have solar(太陽(yáng)的) roof panels. The electricity from these can be used to run the air conditioners (空調(diào))in the buildings.
People continue to cut down forests around the cities. This makes the problem worse. Cities are growing faster and faster. By the year 2025, four fifths(五分之四) of the population will be living in cities. If we go on like this, there will not be enough farmland to feed everyone in the world
【小題1】The scientists have found       .

A．cities become very hot in summer
B．Atlanta is the hottest city in America
C．there are not as many storms as before
D．it is not as hot on the roof as in the street
【小題2】The way to make the city cooler is to       .
A．plant more trees
B．try to use air conditioners more
C．build more parks and squares
D．paint the roofs of all the white buildings
【小題3】What will probably happen in the future according to the fourth paragraph(段落)?
A．Cities won’t grow very fast
B．We will not have enough food
C．Most people will move to the countryside
D．People will plant more trees outside the cities
【小題4】What is the best title(題目)for the passage?
A．More Farmland Is Needed
B．Trees Make Cities Cooler
C．Cities Are Getting Hotter
D．Scientists Are Worried About Storms

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