It is vital ________ our life that we must ________ our environment．


  1. A.
    to; protect
  2. B.
    to; harm
  3. C.
    for; protect
  4. D.
    for; provide
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語 來源：復(fù)習(xí)與測(cè)評(píng)　單元綜合測(cè)試卷　九年級(jí)下冊(cè)(配合牛津英語) 牛津版 題型：016

It is vital ________ our life that we must ________ our environment．

[　　]

A．to; protect

B．to; harm

C．for; protect

D．for; provide

查看答案和解析>>

科目：初中英語 來源：復(fù)習(xí)與測(cè)評(píng)　單元綜合測(cè)試卷　九年級(jí)下冊(cè)(配合牛津英語) 牛津版 題型：051

閱讀短文，然后按要求完成各題。(Read the passage and do as required．)

　　This book says that our world is in danger．(A)It is vital that we do something to save the earth．First of all, what are the threats to our environment?

　　The authors ask us to‘imagine the earth inside a kind of greenhouse with the atmosphere around it acting like the glass, letting sunlight in while keeping much of

warmth from getting out．The atmosphere is(B)essential to all living things．(C)Without the atmosphere, the earth would be as cold and lifeless as the surface of the moon．’

　　‘The(D)trouble is that our atmosphere is changing(E)________ we are polluting it with chemicals－in the form of gases－and it is keeping in too much heat!’

　　These gases, mainly carbon dioxide, are produced by burning fuels(F)例如 petrol．The Greenhouse Effect may cause the level of the sea to(G)________ and drown cities and even whole countries．

1．畫線部分(A)It所指代的是：________．

2．寫出畫線部分(B)和(D)的同義詞或近義詞：________；________．

3．將畫線部分(C)改寫為：If there ________　________ atmosphere, the earth would be cold and lifeless ________ the surface of the moon．

4．在畫線部分(E)和(G)的空白處分別填入適當(dāng)?shù)膯卧~：________；________．

5．將畫線部分(F)譯成英語：________．

查看答案和解析>>

科目：初中英語 來源： 題型：閱讀理解


Biodiversity(生物多樣性), or biological diversity, is a wide-ranging concept that covers all the different kinds of plant and animal species present on earth. Environmentalists believe that many millions of species exist. As all these living organisms are dependent on each other in some way, biodiversity is desirable. Any loss to the planet is actually a loss for mankind as well, and it is our responsibility to try and save Earth’s biodiversity.
Biodiversity has a vital role to play in the evolution（演變）of species. Species become extinct, but new species evolve, and this is how a balance is maintained. This may sound pretty simple, but it takes millions of years for changes to take place.
Biodiversity is also very important to the stability of food webs. Damage to them can mean disaster for an entire ecosystem. The extinction of a single animal species can put huge pressure on the numerous other species dependent on it.
Biodiversity also has an important role to play in human society. Apart from being the most intelligent species on earth, human beings are also the most dependent. We depend on nature to meet our basic needs. When we change the balance of nature to create our cities and bring about our technical advances, we knowing or unknowing cause great damage to the ecosystem. This must be understood, and the damages must be reversed（顛倒）in any way they can to ensure that the balance of the ecosystem is maintained.
【小題1】We learn from the first paragraph that_________.
A biodiversity can be seen
B all living species are found on earth.
C people everywhere are aware of the importance of biodiversity
D the loss of any species can affect humans
【小題2】Why can change in food webs lead to disaster?
A Because it can make people suffer from disease
B Because it can put huge pressure on some species
C Because it takes a long time for such changes to take place
D Because it will damage ninety-nine percent of species
【小題3】What does the underlined word probably mean?
A Immovability  B Peace  C Strength  D Variety
【小題4】We learn from the last paragraph that __________.
A humans are as independent as they are intelligent
B the balance of the ecosystem is easily maintained
C nature has given us a lot
D nature is taking revenge on us
【小題5】Which of the following may be the best title for this passage?
A Food Webs are Closely Related to Biodiversity.
B Biodiversity Plays a Very Important Role in Evolution
C How Biodiversity Affects Human Society.
D Understanding Biodiversity and Its Importance.

查看答案和解析>>

科目：初中英語 來源：2013屆河北省唐山市初二下學(xué)期3月月考英語試卷 題型：閱讀理解

Biodiversity(生物多樣性), or biological diversity, is a wide-ranging concept that covers all the different kinds of plant and animal species present on earth. Environmentalists believe that many millions of species exist. As all these living organisms are dependent on each other in some way, biodiversity is desirable. Any loss to the planet is actually a loss for mankind as well, and it is our responsibility to try and save Earth’s biodiversity.

Biodiversity has a vital role to play in the evolution（演變）of species. Species become extinct, but new species evolve, and this is how a balance is maintained. This may sound pretty simple, but it takes millions of years for changes to take place.

Biodiversity is also very important to the stability of food webs. Damage to them can mean disaster for an entire ecosystem. The extinction of a single animal species can put huge pressure on the numerous other species dependent on it.

Biodiversity also has an important role to play in human society. Apart from being the most intelligent species on earth, human beings are also the most dependent. We depend on nature to meet our basic needs. When we change the balance of nature to create our cities and bring about our technical advances, we knowing or unknowing cause great damage to the ecosystem. This must be understood, and the damages must be reversed（顛倒）in any way they can to ensure that the balance of the ecosystem is maintained.

1.We learn from the first paragraph that_________.

A biodiversity can be seen

B all living species are found on earth.

C people everywhere are aware of the importance of biodiversity

D the loss of any species can affect humans

2.Why can change in food webs lead to disaster?

A Because it can make people suffer from disease

B Because it can put huge pressure on some species

C Because it takes a long time for such changes to take place

D Because it will damage ninety-nine percent of species

3.What does the underlined word probably mean?

A Immovability  B Peace  C Strength  D Variety

4.We learn from the last paragraph that __________.

A humans are as independent as they are intelligent

B the balance of the ecosystem is easily maintained

C nature has given us a lot

D nature is taking revenge on us

5.Which of the following may be the best title for this passage?

A Food Webs are Closely Related to Biodiversity.

B Biodiversity Plays a Very Important Role in Evolution

C How Biodiversity Affects Human Society.

D Understanding Biodiversity and Its Importance.

 

查看答案和解析>>

同步練習(xí)冊(cè)答案