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70% of the earth's surface (表面) is covered with water. But about 97% of that is sea water, or salt water.
Man can only use the other 3% the fresh water from rivers, lakes, underground, and other sources (源泉).
And we can not even use all of that. Even worse, some of it has been made dirty.
However, as things stand today, this fresh water is still enough for us. But our need for water is becoming
larger and larger quickly-almost day by day. We should take steps to do with this problem now and in this
way we can get away from a serious world-wide water shortage (缺乏) later on.
We all have to learn how to stop wasting (浪费) our valuable water. One of the first steps is to develop
(开发) ways of reusing it. Today in most large cities, water is used only once and then sent out into a sewer
system(下水道). From there it returns to sea or runs into underground places. But even if every large city
reused its water, we still would not have enough. All we'd have to do to make use of sea water in the world
is to remove the salt. If we take these we will be in no danger of drying up.
B. we haven't got enough fresh water
C. only 70% of the earth's surface is water
D. more water is sent into sewer system
B. fresh, enough
C. dear, useful
D. clean, helpful
B. Carry salt water into lakes or rivers
C. Try to save the fresh water as much as possible
D. Do our best to use the water again
B. make the water in cities clean
C. take the water from underground
D. make the need for water smaller
B. The World's Water Problem
C. The Thirsty World
D. Fresh Water and Sea Water
先通读下面的短文,掌握其大意,然后根据短文内容和所给首字母,在空格内填入一个适当的词,使短文意思完整。所填单词在题后横线上必须完整写出。
In some parts of the United States, farming is easy. But farming has always been h_________(1) in the northeastern corner of the country, which is called New England.
New England has many t_______ (2 ) and thin, rocky (多岩石的) soil (土壤). Anyone who has wanted to start a new f________ ( 3 ) there has to work very hard. The first job is to cut down trees. The n_________ ( 4 ) job is to dig (挖) the stumps (树桩) of the trees out of the soil. Then the farmer has the difficult job of m_________ ( 5 ) stones from his land.
The work of removing stones never really e_________ ( 6 ), because every winter more stones appear. They come up t__________ ( 7 ) the thin soil from the rocks below. F_________ ( 8 ) have to keep removing stones from the fields. Even today, farms which have been worked o______ ( 9 )for 200 years keep producing more stones. That is why stone walls are used i________ ( 10 ) of fences (篱笆) around New England fields. The stone walls are not high, a man can easily climb o_________ ( 11 ) them. But they keep the farmer’s cows from j_________ ( 12 ) his neighbour’s cows.
查看习题详情和答案>>Trees are useful to man in three important ways: they give him wood and other useful things, they give him cool places, and they help to stop drought and flood.
Unluckily, in many parts of the world, man has not found that the third of these points is the most important. Man wants to make money from trees, so he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And also, he is usually too careless to plant and look after new trees. So the forests slowly disappear.
This does not only mean that man will have fewer trees. The results are even worse: for where there are trees, their roots break up soil-make the rain in-and also bind the soil, thus stopping it from being washed away easily; but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When all the top-soil is gone, nothing is left but useless desert.
1.The most important points of trees to man is ________.
A. they help him to make money
B. they give him cool
C. they give him wood and other things
D. they help him to stop drought and floods
2.In many places forests slowly disappear because ________ .
A. many trees have been cut down by man
B. new trees are not well looked after
C. man has not paid enough attention to planting trees
D. all the above
3.Land becomes desert after all trees are cut down because ________ .
A. roots of trees break up the soil
B. there are too many rainfalls
C. strong winds bring a lot of sand
D. there are no longer trees to keep the rain and protect the top-soil.
4. Which title best fits the passage?
A. Trees and Man.
B. The Function of Tree Wood.
C. How do People do with Trees?
D. The Usage of Tree Roots.
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Do you like chocolate? Maybe most people do. A box of it can be a great gift. Buy one for a friend and give it as a surprise. See how happy that person gets.
Say you just got a box of chocolate. Which piece do you pick first? A man has studied people’s choices. He says they tell something about the person. Did you choose a round piece? You are a person who likes to party. Did you choose an oval (椭圆形的) shape? You are a person who likes to make things. Picking a square shape shows something else. The person is honest and truthful. You can depend on him or her.
What kind of chocolate do you pick? Maybe you like milk chocolate. This shows you have warm feelings about the past. Dark chocolate means something else. A person who chooses it looks toward the future. What about white chocolate? Would you choose it? If so, you may find it hard to make up your mind. Some people like chocolate with nuts (果仁). These are people who like to help others.
Do you believe these ideas? Can candy tell all these things? It doesn’t really matter. There is one sure thing about eaters of chocolate. They eat it because they like it.
【小题1】This passage mainly tells us ______.
A.why people like chocolate |
B.almost everyone likes chocolate |
C.about different kinds of chocolate |
D.different choices may show different characters |
A.likes singing, dancing and drinking | B.likes to do something for others |
C.is good at making things | D.can be depended on |
A.look forward to the future | B.like to think of the past |
C.enjoy parties and fun | D.have trouble making decisions |
A.in oval shape | B.in square shape |
C.with nuts | D.with coffee |
A.believes all the information about chocolate |
B.does not believe the information about candy |
C.is trying to get you to believe false information |
D.doesn’t think it important whether you believe the ideas |
Once, a circle lost a piece of its own. The circle wanted to be whole, so it went around, looking for its ? piece. But because it was not complete, it could only roll (滚) very slowly. It enjoyed the flowers and the sunshine ? the way. It talked with worms. It found lots of different pieces, but ? of them fit. So it left them all by the side of the road and kept on ? for the lost piece. Then one day the circle found a piece that fit ? . The circle put the piece into ? . It could be whole with nothing lost. It was so happy and began to roll. As it was a perfect circle, it could roll very fast, too fast to see flowers or talk to worms. It realized how different the world was when it rolled so quickly. It felt so sad ? it stopped, left its found piece by the side of the road and rolled very slowly.
Sometimes we are perfect when we lose something. A man ? has everything is poor in some ways. He will never have hopes, dreams or something ? . He will never know someone loves him or someone is giving him something he has always wanted or never had.
We couldn’t be perfect. But we must be brave enough to love, strong enough to forgive, kind enough to share ? with others and clever enough to know there is enough love around us and then we can always have a wonderful time in our life.
1.A. miss????????????? ????????????? ????????????? ????????????? B. lose????????????? ????????????? ????????????? ????????????? C. missing????????????? ????????????? D. losing
2.A. at????????????? ????????????? ????????????? ????????????? ????????????? B. of????????????? ????????????? ????????????? ????????????? C. in????????????? ????????????? ????????????? ????????????? D. along
3.A. none????????????? ????????????? ????????????? ????????????? B. all????????????? ????????????? ????????????? ????????????? C. every one????????????? ????????????? D. each
4.A. look????????????? ????????????? ????????????? ????????????? B. looking????????????? ????????????? ????????????? C. to look????????????? ????????????? ????????????? D. looked
5.A. perfectly????????????? ????????????? ????????????? B. perfect????????????? ????????????? ????????????? ????????????? C. part????????????? ????????????? ????????????? D. partly
6.A. it????????????? ????????????? ????????????? ????????????? ????????????? B. itself????????????? ????????????? ????????????? ????????????? C. them????????????? ????????????? ????????????? D. themselves
7.A. which????????????? ????????????? ????????????? ????????????? B. whether????????????? ????????????? ????????????? C. that????????????? ????????????? ????????????? D. what
8.A. who????????????? ????????????? ????????????? ????????????? B. which????????????? ????????????? ????????????? ????????????? C. where????????????? ????????????? ????????????? D. when
9.A. bad????????????? ????????????? ????????????? ????????????? B. worse????????????? ????????????? ????????????? ????????????? C. good????????????? ????????????? ????????????? D. better
10.A. kindness????????????? ????????????? ????????????? B. sadness????????????? ????????????? ????????????? C. happiness????????????? ????????????? D. illness
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