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Unfortunately，in many parts of the world，men have not realized that the third of these services is the most important. In their eagerness to make money from trees，some people have cut trees down in large numbers，only to find that they have lost the best friends they had. And besides，they are usually too careless to plant and look after new trees，so the forest slowly disappear.
This doesn't only mean that men will have fewer trees. The results are even more serious，for where there arc trees，their roots(根)break up soil—allowing the rain to sink in——and also bind(固定)the soil，thus preventing 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 remains but worthless desert.
根据短文内容判断正(T)误(F)
1. The most important service of trees to men is that they give them wood and other products.
2. In many places forests slowly disappear because new trees are not well looked after.
3. Land becomes desert after all trees are cut down because there are no more trees to keep the rich top-soil from being carried away by floods.
4. Some people cut down a large number of trees because they were eager to get money from trees.
5. Trees can make the rain sink the ground.
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Reading comprehension.
Trees are very useful to men in three important ways: they supply them with wood and other products; they give them shade; and they help to prevent drought and floods.
Unluckily, in many parts of the world, people have not realized the third of these services is the most important. In their eagerness to make money from trees, some people have cut trees down in large numbers, only to find that they have lost the best friends they had. And besides, they are usually too careless to plant and look after new trees, so the forests solely disappear.
This does not only mean that men will have fewer trees. The results are even more serious: where there are trees, their roots break up soil--allowing the rain to sink in--and also bind the soil, preventing 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 stays but worthless desert.
Choose the best answer:
(1) The most important service of trees to men is that they ________.
[ ]
A
．help them to make moneyB
．give them shade and coolC
．help them to prevent drought and floodsD
．give them wood and other products(2) In many places forests slowly disappear because ________.
[ ]
A
．many trees have been cut downB
．new trees are not well looked afterC
．men haven't planted enough treesD
．all of the above(3) Land becomes desert after all trees are cut down because ________.
[ ]
A
．tree roots break up the soilB
．the rich top--soil will be carried away by floodsC
．of strong windsD
．there is too much rain(4) Some people cut down a large number of trees because ________.
[ ]
A
．they were eager to get wood from themB
．they were eager to make money from themC
．they didn't realize the importance of themD
．both B and C(5) Which of the following is not true?
[ ]
A
．Tree roots can make the top--soil rich and the ground hard.B
．Trees can prevent drought and floods.C
．Tree roots can break up soil.D
．Trees can make the rain sink into the ground. 查看习题详情和答案>>阅读并按要求做题。
Trees are useful to men in three important ways： 1 , they give them shade, and they help to prevent drought and floods(防止洪水与干旱)．
Unfortunately, in many parts of the world, men have not realized(意识)that the third of these is the most important．In their eagerness(渴望)to make money from trees, 2 , only to find that without them they have lost the best friends they had．And also 3 , so many trees are slowly gone．
This doesn’t not only mean that men will have fewer trees．The results(结果)are even more serious： 4 , their roots(树跟)break up soil——having the rain go in——and also bind(固定)the soil(土壤), thus stopping it from being washed away easily; 5 , the rain falls on hard ground and runs away, causing floods and carrying away the rich top-soil．
A．some people have cut trees down in large numbers
B．but where there are no trees
C．they provide(供给)them with wood
D．they are usually too careless to plant and look after new trees
E．for where there are trees
6．Which is the best title of the passage?________
A．Planting More Trees
B．The Problems of Trees
C．Never Cut Down Trees
D．The importance of Trees
they give them shade (树荫), and they help to prevent drought and floods.
Unfortunately, in many parts of the world, men have not realized that the third of these services is the most
important. In their eagerness (渴望) to make money from trees, some people have cut trees down in large
numbers, only to find that without them they have lost the best friends they had. And besides (此外), they are
usually too careless to plant and look after new trees, so the forests slowly disappear.
This doesn't only mean that men will have fewer trees. The results are even more serious: where there are
trees, their roots (根) break up soil-allowing the rain to sink in and also bind (固定) the soil, thus (因而)
preventing it from being washed away easily, but where there are no trees, the rain falls carrying away
the rich top-soil. When all the top-soil is gone, nothing remains (剩下) but worthless desert.
B. there are no more trees to keep the rich top-soil from being carried away by floods
C. there is a strong wind
D. roots of trees break up the soil
B. they wanted to get money from them
C. they didn't realize the importance of them
D. all the above
B. Trees can make the rain sink into the ground.
C. Trees can prevent drought and floods.
D. Tree roots can take away the top-soil