Oxygen is a kind of gas, ______we couldn’t live.

A. without it    B. without that    C. without which    D.  if not

練習冊系列答案
相關(guān)習題

科目：初中英語 來源：隨堂講與練　八年級下冊(配合牛津英語) 牛津版 題型：029

用括號中所給詞的適當形式填空。

Oxygen is an ________ gas．It keeps us healthy and alive．(visible)

查看答案和解析>>

科目：初中英語 來源：隨堂講與練　八年級上冊(配合牛津英語) 牛津版 題型：054

完形填空

Make Our Cities Greener

　　The greening of our cities has added much more than before, but we are still not 　　1　　 with this result．In recent years people have 　　2　　 many trees in the cities and people have 　　3　　 much care of the planted trees．But the greening process(進程)is　　4　　 than the cities in many other countries．For example, the green space to each Shenyang people is less than 0.4 Mu while every Londoner has more 　　5　　 20 Mu．

　　We can get much from making our cities greener 　　6　　 planting trees．First, trees take harmful gas from the air and 　　7　　 oxygen．We all know oxygen is essential(基本的)to the health of human beings, we can't live 　　8　　 oxygen．Second, trees and other greenery make our cities 　　9　　．Third, trees can also make the climate(氣候)of the cities better．

　　Since we can get so much from making our cities greener, we should plant more trees and take better care of them．We also should not 　　10　　 the trees．In a word, we should do everything to add to the greening of our cities．

(1)
[　　]

A．

unhappy

B．

unsafe

C．

satisfied

D．

please

(2)
[　　]

A．

planted

B．

cut down

C．

bought

D．

made

(3)
[　　]

A．

taking

B．

take

C．

taken

D．

took

(4)
[　　]

A．

quicker

B．

less

C．

more

D．

slower

(5)
[　　]

A．

then

B．

in

C．

to

D．

for

(6)
[　　]

A．

in

B．

through

C．

by

D．

to

(7)
[　　]

A．

take

B．

release

C．

get

D．

put out

(8)
[　　]

A．

with

B．

in

C．

by

D．

without

(9)
[　　]

A．

more beautiful

B．

warmer

C．

drier

D．

happier

(10)
[　　]

A．

plant

B．

protect

C．

destroy

D．

sell

查看答案和解析>>

科目：初中英語 來源：中考英語閱讀理解實戰(zhàn)演練之繽紛自然篇 題型：050

閱讀理解

　　Most animals only have animals of a different kind for food．But sometimes two kinds of animals come together in a partnership(伙伴關(guān)系)which is good for them．You may have noticed some birds on the backs of sheep．This is not because they want a ride, but because they find easy food in the parasites(寄生蟲)on sheep．The sheep let the birds do so because they can stop the parasites from troubling them．So though they can do with it by themselves, they can do better together with each other．

　　Sometimes an animal has a plant partner．The relationship develops until the two partners cannot do without each other．This is so in corals of the sea．Inside their bodies they have very small plants, which act as “cleaners”, taking the useless things from the coral and giving oxygen in return．That is what the animal needs to live．If the plants are killed, or are even kept from receiving light so that they cannot live as usual, the corals will die．

(1)

Some birds like to sit on a sheep because ________．

[　　]

A．

they can eat its parasites

B．

they enjoy traveling with the sheep

C．

they can’t live without its parasites

D．

they want to find the warm place

(2)

The underlined word “they” in the first paragraph means ________．

[　　]

A．

birds and parasites

B．

birds and sheep

C．

parasites and sheep

D．

birds, parasites and sheep

(3)

We learn from the passage that corals need plants for ________．

[　　]

A．

friends

B．

light

C．

food

D．

oxygen

(4)

The Chinese for the word “oxygen” is ________．

[　　]

A．

氧氣

B．

空氣

C．

廢氣

D．

二氧化碳

(5)

What is the second paragraph mainly about?

[　　]

A．

Some animals and plants cannot live without each other．

B．

Some animals and plants cannot develop their friendship easily．

C．

Some plants eat each other．

D．

Some animals live better together．

查看答案和解析>>

科目：初中英語 來源：同步題 題型：閱讀理解

閱讀理解
     We must look after our environment well.Do you know why? Because environment is very
important for human beings.For example,we have to breathe in(吸入)oxygen every minute.And
oxygen mainly comes from trees.That's one reason why trees are so important.They make oxygen
and oxygen is essential(必要的)for us.We need it in order to live.We also need the rainforest,
because they make 20% of the world's oxygen.
     There is a famous forest named Amazonian in Brazil.A lot of rainforests there are disappearing
now.This is because people are cutting down the trees because they want the wood.And they also
want the cattle(牲口)in the forest for meat.In order to protect our environment,we must stop
destroying them!
1.What do we breathe every minute?
A.Air.
B.Oxygen.
C.Carbon dioxide.
D.Water.
2.Oxygen mainly comes from ________.
A.trees
B.water
C.earth
D.flowers
3.Where is the Amazonian Rainforest?
A.China.
B.The UK.
C.South America.
D.Australia.
4.What do they want for cutting down the trees?
A.Wood and oxygen.
B.Wood and water.
C.Wood and cattle.
D.Nothing.
5.Shall we protect the rainforest?
A.Yes,we shall.
B.No,we shouldn't.
C.I don't know.
D.Yes,we shouldn't.

查看答案和解析>>

同步練習冊答案