题目内容
________ a tree is ________
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A ．Planting, funny |
B ．To plant, funny |
C ．Planting, fun |
We know that trees are useful in our everyday life. They 1 us many things, such as wood, oxygen(氧气), rubber, medicines and many other things. They can 2 tell us a lot about our climate. The following are the reasons. If you cut across a tree, you can 3 that it has many rings. Most trees grow one 4 ring every year. Because of this reason, we know 5 a tree is. A tree over a hundred years old means that it has more than a hundred 6 . When the climate is dry(干燥的) or very cold, the trees do not grow very much and their rings are usually 7 . When it is wet and 8 , the rings are much thicker. If the rings are suddenly very thin or suddenly very thick, this means that the 9 changed suddenly. If we look at the rings on the trees, we can 10 about the climate for a hundred years. We can see how our climate is changing today.
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Trees are useful to man（人类）in three very important ways. The first important way is that they provide man with food, wood and other products. Trees provide not only man with food, but also many animals with food. Without trees many animals could not live on the earth. It's not easy for man to live on the earth, either.
The second important way is that trees give us shade. On a hot summer day, people are eager(渴望)to have a rest under the shade of a tree after they have walked a long way. You can imagine how important the shade of a tree is to man and to animals.
The third important way is that trees help to prevent drought（干旱）and floods（洪水）. However, in many parts of the world, man has not realized the third important way. He has cut trees down in large numbers. In the end he finds that he has lost the best friends he had.
【小题1】Trees are important to man in ways.
| A．2 | B．3 | C．4 | D．5 |
| A．Trees give food to both man and animals. |
| B．Trees only provide animals with food. |
| C．Trees give food to neither man nor animals. |
| D．Trees only provide man with food |
| A．people are eager to have a rest |
| B．people usually walk a long way |
| C．animals don't need shade |
| D．the shade of a tree is very important to man and to animals |
| A．give us food | B．give us shade |
| C．prevent drought and floods | D．give us wood |
| A．farmer | B．man | C．worker | D．boy |
Trees are useful to man in three very important ways. The first important way is that they provide man with food, wood and other products. Trees provide not only man with food, but also many animals with food. Without trees many animals could not live on the earth. It’s not easy for man to live on the earth, either.
The second important way is that trees give us shade. On a hot summer day, people are eager(渴望)to have a rest under the shade of a tree after they have walked a long way. You can imagine how important the shade of a tree is to man and to animals.
The third important way is that trees help to prevent drought and foods. However, in many parts of the world, man has not realized the third important way. He has cut trees down in large numbers. In the end he finds that he has lost the best friends he had.
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The Importance of Trees |
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The First Important Way: 1.____________________ _________________________
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The Second Important Way:
To give man shade
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The Third Important Way: 2.______________________ _________________________
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Without trees it’s difficult for man and many animals to live on the earth.
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On a hot summer, people 3.________________ _______________________ are eager to have a rest under the shade. |
Man has not realized this. Because of 4.____________ __________________________ He finds that he has lost the best friends he had |