根據(jù)短文內(nèi)容，選擇正確的選項(xiàng)。
The world itself is becoming much smaller by using modern traffic and modern communication means(交流方式). Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest is pollution. To pollute means to make things dirty. Pollution comes in many ways. We see it, smell it, drink it and even hear it.
Man has been polluting the earth. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in a place, men moved to another place. But this is no longer true. Man is now slowly polluting the whole world.
Air pollution is still the most serious. It’s bad to all living things in the world, but it is not only one kind of pollution. Water pollution kills fish and pollutes drinking water. Noise pollution makes us become angry more easily.
Many countries are making rules to fight against pollution. They stop the people from burning coal in houses and factories in the city, and from blowing dirty smoke into the air.
The pollution of SO2 is now the most dangerous problem of air pollution. It is mostly caused by heavy traffic. It is certain that if there are fewer people driving, there will be less air pollution.
The earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must try to control the growth of population at the same time.
小題1:Our world is becoming much smaller .
A．because the earth is being polluted day and night
B．because science is developing
C．because of the rise in population
D．because the earth is blown away by the wind every year
小題2:Thousands of years ago, life was  it is today.
A．much easier thanB．a(chǎn)s easy as
C．a(chǎn)s hard asD．much harder than
小題3:Pollution comes in many ways. We can even hear it. Here “it” means .
A．water pollutionB．a(chǎn)ir pollution
C．noise pollutionD．rubbish
小題4:What is the most dangerous problem of air pollution?
A．CO2B．H2OC．SO2D．CO
小題5:Air pollution is the most serious kind of pollution because .
A．it’s bad to all living things in the world
B．it makes much noise
C．it has made our rivers and lakes dirty
D．it makes us become angry more easily

小題1:B
小題2:D
小題3:C
小題4:C
小題5:A

小題1:細(xì)節(jié)理解題，根據(jù)文中語句“The world itself is becoming much smaller by using modern traffic and modern communication means(交流方式).”理解可知。
小題2:細(xì)節(jié)理解題，根據(jù)文中語句“Life today is much easier than it was hundreds of years ago,”理解可知。
小題3:理解推斷題，根據(jù)文中語句理解可知只有噪音污染才能聽得見。
小題4:細(xì)節(jié)理解題，根據(jù)文中語句“The pollution of SO2 is now the most dangerous problem of air pollution. It is”理解可知。
小題5:細(xì)節(jié)理解題，根據(jù)文中語句“Air pollution is still the most serious. It’s bad to all living things in the world,”理解可知。
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