After World War Two, America faced the fact that people moved from the cities to the suburbs．Never before did the country experience such a transition(转折)．That is why some problems appeared for the new settlers(定居者)．
Some people think that children living in the suburbs are given worse services because they can't go to sports centers and cinemas so often as children in the cities．The children in the suburbs depend on their parents much more than those who live in the cities．Even when they become adults, this dependence does not disappear．
However, there is said to be a solution －to buy a car when a child turns sixteen．But actually it even worsens the worries．In most cases of teenage deaths, the cause is a traffic accident．They do not have enough experience in driving．Suburban children usually unite in small groups．
The cities have more chances, more job offerings．And as the whole world becomes more and more urbanized(城市化), sometimes living in the suburbs may limit the development of kids．Those who live in the suburbs think of the city as some kind of dangerous place．It may sound strange, but it is right sometimes．When you move to the city, you realize how different people are there．And it might be very difficult to get used to the rhythm(节奏)．The city is the center of culture and all kinds of opportunities．Probably the suburbs will become cities in the future．But something should be changed．Suburban people shouldn't feel that they are living so far away．
(1)
According to the passage, after the Second World War, many Americans ________．
[ ]
A．
changed their opinion on city life
B．
moved to places away from the city center
C．
escaped from suburban life
D．
suffered from mental diseases
(2)
Some people think that people living in the suburbs may ________．
[ ]
A．
grow up peacefully
B．
not depend on their parents
C．
do less exercise
D．
miss good job opportunities
(3)
The author holds the opinion that kids buying cars is not a good idea because ________．
To extinguish(熄)different kinds of fires, several types of fire extinguishers(灭火器)have been invented．They must be ready for immediate use when fire breaks out．Most portable(手提式的)kinds operate for less than a minute, so they are useful only on small fires．The law requires ships, trains, buses and planes to carry extinguishers．
Since fuel, oxygen(氧气)and heat must be present for fire to exist, one or more of these things must be removed or reduced to extinguish a fire．If the heat is reduced by cooling the material below a certain temperature, the fire goes out．Water is the best cooling material because it is low in cost and easy to get．
Another method of extinguishing fire is by cutting off the oxygen．This is usually done by covering the fire with sand, steam or some other things．A blanket(毯子)may be used to cover a small fire．
A third method is called separation, which includes removing the fuel, or material easy to burn, from a fire, so that it can find no fuel．
The method that is used to put out a fire depends on the type of fire．Fires have been divided into three classes．Fires in wood, paper, cloth and the like are called C1ass A fires．These materials usually help keep the fire on．Such fires can be stopped most easily by cooling with water．
(1)
If a fire breaks out on a bus, which of the following should be ready there for you to use?
[ ]
A．
Sand
B．
Water
C．
A blanket
D．
An extinguisher
(2)
To cover a small piece of burning wood with a basin(盆)in order to stop the fire is aft example of ________．
[ ]
A．
separating the fire
B．
reducing the heat
C．
removing the fuel
D．
cutting off the oxygen
(3)
In choosing how to put out a fire, we should first be clear about ________．
[ ]
A．
when it breaks out
B．
how it comes about
C．
what kind it is
D．
where it takes place
(4)
What would the writer probably discuss in the next paragraph?
