题目
题型：同步题难度：来源：
deserts, so people can live and grow food. They are learning a lot about the deserts. But more and more
of the earth is becoming deserts all the time. Scientists may not be able to change the deserts in time.
Scientists think that people make deserts. People are doing bad things to the earth.
Some places on the earth don"t get very much rain. But they still don"t become deserts. This is because
some green plants are growing there. Small green plants and grass are very helpful to dry places. Plants
don"t let the hot sun make the earth even drier. Plants don"t let the wind blow the earth away. When a little
rain falls, the plants hold the water. Without plants, the land can become a desert much more easily.
B. Plants don"t let the hot sun make the earth even drier.
C. People don"t keep the earth well.
D. Scientists haven"t learnt enough about the deserts.
B. grow food
C. do nothing
D. study a lot
B. Scientists ask people to live in the deserts and grow food there.
C. People do bad things to the earth.
D. Scientists may not be able to change the deserts.
B. They can stop the wind from blowing the earth away.
C. They can keep the earth wet.
D. All the above.
B. People Make Deserts.
C. Green Plants and Grass.
D. The Desert, the Tree and the Water.
答案
核心考点
试题【阅读理解。 Scientists are trying to make the deserts(沙漠)into a good land again. T】；主要考察你对科普环保类等知识点的理解。[详细]
举一反三
can eat and others often forget to turn off the lights when they leave the classroom.
They say they can afford these things. But I don"t agree with them. Waste can bring a lot of
problems. Although China is rich in some resources(资源) , we are short of (缺乏) others, for
example, fresh water. It is reported that we will have no coal(煤) or oil to use in 100 years.
So if we go on wasting our resources, what can we use in the future and where can we move?
Think about it. I think we should say no to the students who waste things every day. Everybody
should stop wasting as soon as possible.
In our everyday life, we can do many things to prevent waste from happening, for example,
turn off the water taps(水龙头) when we finish washing, turn off the lights when we leave the
classroom, try not to order more food than we need, and so on. Little by little, everything
will be changed. Waste can be stopped one day, if we do our best.
B. don"t work hard
C. waste things
D. throw rubbish everywhere
B. Forest.
C. Oil.
D. Coal.
B. Waste can bring no problem.
C. China is rich in fresh water.
D. Students never waste things.
B. School life
C. Waste in the School
D. Rich Resources in China
Trees provide man with fruits and building materials in the form of wood. Without trees itwould be
impossible to build houses, boats and even bridges. Furniture such as tables, chairs andbeds is made of
wood.
In the tropics (热带地区) where it is very hot all through the year, trees protect man fromthe terrible
heat. They are also useful in preventing good and rich top soil from being washed away during heavy rains which are so common in the tropics.
If there were no tree or vegetation of some kinds to hold back the soil with their roots, heavy rains
would wash away the rich soil that is so important and necessary to agriculture(农业). The result is that
the land becomes a desert.
There are so many desert areas in the world. A long time ago these desert areas must havebeen very
rich fertile(肥的) areas, but since our ancestors in the distant past do not have enough knowledge about
science of nature, they cut down all the trees in the areas where they lived and never planted new ones.
By and by, the rich soil was blown and washed away by strong winds and heavy rains. In the end the land was turned into deserts where nothing could grow.
B. trees are not as useful now as they used to be
C. trees were more useful in the past than they are now
D. human beings have always found trees very useful
B. soil on the surface of the earth which is good for agriculture
C. soil found under the earth which is under roots of trees
D. dry soil in desert areas which is bad for agriculture
B. covered by ice and snow
C. very cold
D. very dry and useless
B. heavy rains would clean the tropics
C. the rich top soil couldn"t be held back
D. there would be no agriculture at all
B. man may take no notice of the balance of nature
C. man must do his best to keep the balance of nature
D. the balance of nature is unimportant to man
Life today has brought new problems. One of the biggest is pollution. Water pollution has made our
rivers and lakes dirty. It kills fish and pollutes our drinking water. Noise pollution makes us talk louder and become angry more easily. Air pollution is the most serious kind of pollution: It"s bad to all living things in
the world.
Cars, planes and factories all pollute our air every day. Sometimes the polluted air is so thick that it is
like a quilt over a city. This kind of quilt is called smog(烟雾).
Many countries are making rules to fight pollution. Factories must now clean their water before it is
poured into rivers; they mustn"t blow dirty smoke into the air.
We need to do many other things. We can put waste things in the dustbin instead of throwing it on the ground. We can go to work by bus or with our friends in the same car. If there are fewer people driving,
there will be less pollution. Rules are not enough. Every person must help to fight pollution.
B. there was no pollution
C. both A and B
D. there were not many people
B. Air pollution.
C. Noise.
D. Pollution.
B. air pollution
C. water pollution
D. A, and C
B. when they are poured into rivers
C. after it is poured into rivers
D. before it is poured into rivers
B. today people don"t have to talk to each other in a loud voice
C. We can drink water from the polluted rivers and lakes
D. people are making rules in order to fight pollution
her Xi Wang. It means "hope".
When Xi Wang was born, she weighed (重) __2__ 100 grams (克). Xi Wang drank her mother"s
milk for as much as 14 hours a day. When she was six months old, she started to eat bamboo shoots (嫩芽) and__3__. Eight months later, she was not a small baby any more. She grew into a __4__ young
panda and weighed 35 kilos. When Xi Wang was 20 months old, she had to look after herself __5__ her
mother had another baby. __6__ , it is very difficult for pandas to live in the wild. Here are some of the
__7__ that pandas like Xi Wang may have in the future.
If hunters catch a panda, they will kill it for its fur. If farmers __8__ trees and forests, pandas will have
no place to live in. When mothers leave baby pandas alone, people will often take them away. People
think that the baby pandas need __9__ .
If pandas are in danger, we should try our best to protect them. If we do __10__ soon there will be no
more pandas in the world!
( ) 2. A. quite
( ) 3. A. leaves
( ) 4. A. strange
( ) 5. A. though
( ) 6. A. Luckily
( ) 7. A. examples
( ) 8. A. cut down
( ) 9. A. money
( ) 10. A. nothing
B. most
B. pandas
B. weak
B. until
B. Suddenly
B. questions
B. plant
B. help
B. everything
C. just
C. trees
C. famous
C. because
C. Sadly
C. matters
C. protect
C. clothes
C. anything
D. hard
D. chips
D. healthy
D. whether
D. Especially
D. problems
D. water
D. family
D. something
would have sweets and ice-cream better than eat and rice. Sweets and ice-cream are not bad for us if we eat
them at the end of a meal. (1)_____. It is important for us to eat our meal at the same time every say. When
we feel hungry, it is a signal that our body needs food. (2)_____. A long time ago in England, some judges
often decided whether a man was telling the truth by giving him some dry bread. (3)_____. Though this
seems very strange and foolish, they thought it was a very good way of finding out the truth . A man who
is worrying about something has difficulty in swallowing anything dry. (4)_____.