28．There life on the earth for millions of years． A．has B．has been C．have D．have been 【查看更多】

 

題目列表(包括答案和解析)

There ______ life on the earth for millions of years．

A．has    B．has been    C．have    D．have been

查看答案和解析>>



The world itself is becoming much smaller by using modern traffic and modern communication. Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest problems is pollution.
To pollute means to make things unfit or unclean to use. Pollution comes in many ways. We see it, smell it, drink it and even eat it. Pollution is beginning to threaten (威脅) our health, our happiness and our life.
Man has been polluting the earth from the time he first made fire, washed his clothes in the river and threw his waste on the ground. When land was used up or water became dirty, men moved on to another place. At first, the problem was not so serious because there was plenty of clean air, land and water. There weren’t so many people then and their wants fewer. All the dirty things could be absorbed(吸收) by nature and soon covered over. But this is no longer true. The increase of pollution and the development of industry(工業(yè)) have changed that. Man is slowly poisoning(毒害)not only his environment but also himself.
Through the use of poison, man has polluted the land, killing the animals. By putting dirty water and chemicals into rivers and lakes we have polluted our drinking water, killing the fish.
Our increasing population is part of the problem. More people, more waste.
Where is this all to end? Are we turning the world into a big rubbish dump(堆存處)，or is there any hope that we can get rid of (擺脫，除去) the pollution? Luckily, millions of people have been warned of the danger of pollution. Large numbers of people are now working hard to bring pollution under control.
The earth is our home. We must take care of it. This means keeping the land, air and water clean. And we must take care of the rise in pollution at the same time.
【小題1】Which of the following is NOT true according to the passage?

A．We live on the earth, so we should look after it.
B．Man is fighting against different kinds of pollution.
C．To pollute means to make air, water and land unfit for use.
D．All the waste produced by modern industry can be absorbed.
【小題2】In Paragraph4, the underlined word “chemicals” mean ____________.
A．化學物質(zhì)B．醫(yī)療器械C．污染源D．塑料制品
【小題3】Through the uncontrolled use of poison man has___________.
A．made the drinking water dirtyB．polluted the land
C．killed the animals D．a(chǎn)ll of the above
【小題4】From the sentences “More people, more waste.” We know that ___________
A．we need more people, not more waste
B．the increase of population caused more waste.
C．there isn’t any hope that we can get rid of the pollution
D．More people have been warned of the danger of more waste.
【小題5】Which of the following is TRUE according to the passage?
A．Man begins to understand the pollution.
B．Man doesn’t know how to control pollution.
C．Man is doing something to control pollution.
D．Man still doesn’t realize how serious pollution is.

查看答案和解析>>



The world itself is becoming much smaller by using modern traffic and modern communication. Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest problems is pollution.
To pollute means to make things unfit or unclean to use. Pollution comes in many ways. We see it, smell it, drink it and even eat it. Pollution is beginning to threaten (威脅) our health, our happiness and our life.
Man has been polluting the earth from the time he first made fire, washed his clothes in the river and threw his waste on the ground. When land was used up or water became dirty, men moved on to another place. At first, the problem was not so serious because there was plenty of clean air, land and water. There weren’t so many people then and their wants fewer. All the dirty things could be absorbed(吸收) by nature and soon covered over. But this is no longer true. The increase of pollution and the development of industry(工業(yè)) have changed that. Man is slowly poisoning(毒害)not only his environment but also himself.
Through the use of poison, man has polluted the land, killing the animals. By putting dirty water and chemicals into rivers and lakes we have polluted our drinking water, killing the fish.
Our increasing population is part of the problem. More people, more waste.
Where is this all to end? Are we turning the world into a big rubbish dump(堆存處)，or is there any hope that we can get rid of (擺脫，除去) the pollution? Luckily, millions of people have been warned of the danger of pollution. Large numbers of people are now working hard to bring pollution under control.
The earth is our home. We must take care of it. This means keeping the land, air and water clean. And we must take care of the rise in pollution at the same time.
小題1:Which of the following is NOT true according to the passage?
A．We live on the earth, so we should look after it.
B．Man is fighting against different kinds of pollution.
C．To pollute means to make air, water and land unfit for use.
D．All the waste produced by modern industry can be absorbed.
小題2:In Paragraph4, the underlined word “chemicals” mean ____________.
A．化學物質(zhì)B．醫(yī)療器械C．污染源D．塑料制品
小題3:Through the uncontrolled use of poison man has___________.
A．made the drinking water dirtyB．polluted the land
C．killed the animals D．a(chǎn)ll of the above
小題4:From the sentences “More people, more waste.” We know that ___________
A．we need more people, not more waste
B．the increase of population caused more waste.
C．there isn’t any hope that we can get rid of the pollution
D．More people have been warned of the danger of more waste.
小題5:Which of the following is TRUE according to the passage?
A．Man begins to understand the pollution.
B．Man doesn’t know how to control pollution.
C．Man is doing something to control pollution.
D．Man still doesn’t realize how serious pollution is.

查看答案和解析>>

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!

(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

(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

(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．

(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．

查看答案和解析>>

根據(jù)短文內(nèi)容選擇最佳答案。

　　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(日常)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(表面)．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 plant s, 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 tap 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!

(1)

Every morning Napoga went to get clean water ________．

[　　]

A．

before she went to school

B．

after she finished school

C．

without going to school

D．

after she played with her friends

(2)

On the earth, ________．

[　　]

A．

sea water is widely 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

(3)

Acid rain ________．

[　　]

A．

is only bad for living things

B．

can be produced in factories

C．

doesn't do harm 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

(4)

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．

(5)

What's the main idea of the passage?

[　　]

A．

Something must be done to prevent water form 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．

查看答案和解析>>


同步練習冊答案