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阅读下面短文，掌握其大意，然后从各题所给的四个选项中，选出一个最佳答案.
Jungle country is not friendly to man, but is possible to survive there. You must have the right 1 and you must 2 a few important things about the jungle. Then your chances of staying 3 are very good. In the jungle, you should always carry a 4 , Then you can 5 which way to go. Again and again you must alert（警惕）your 6 by it. Keep 7 . 8 the ground in front of you carefully. Stop and listen 9 .
If you lose your 10 , do not be 11 . Mark the 12 where you are with blazes on a tree. Then you can always know where you started.
Finding water that is safe to drink can be a 13 . Many streams and rivers carry germs that can be 14 to man. 15 , the jungle has many kinds of plants and vines that give water.
16 in the jungle is a science. Learn as much as you can about what to 17 in the jungle. Then no part of the jungle will seem completely unfriendly or 18 . 19 , you will be able to“ 20 ”it for a long time.
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阅读下面短文，掌握其大意，然后从各题所给的四个选项中，选出一个最佳答案.
Jungle country is not friendly to man, but is possible to survive there. You must have the right 1 and you must 2 a few important things about the jungle. Then your chances of staying 3 are very good. In the jungle, you should always carry a 4 , Then you can 5 which way to go. Again and again you must alert（警惕）your 6 by it. Keep 7 . 8 the ground in front of you carefully. Stop and listen 9 .
If you lose your 10 , do not be 11 . Mark the 12 where you are with blazes on a tree. Then you can always know where you started.
Finding water that is safe to drink can be a 13 . Many streams and rivers carry germs that can be 14 to man. 15 , the jungle has many kinds of plants and vines that give water.
16 in the jungle is a science. Learn as much as you can about what to 17 in the jungle. Then no part of the jungle will seem completely unfriendly or 18 . 19 , you will be able to“ 20 ”it for a long time.
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阅读理解
The next great land area that man hopes to colonize is the moon. In size it is nearly equal to the area of North and South America. However, it presents hostile (敌对的) environment. Temperatures range from +120 to－150 degrees Centigrade.
There is no air, no water.
Today there is considerable scientific speculation about living on the moon. When man will begin life on the lunar surface is still not determined. But experts believe that colonization wilt take place in three steps. First, there will be increasing periods of exploration with temporary shelters. These periods will be followed by longer stays with housing under the surface of the moon and daily necessities brought by the colonizers themselves. Finally, colonies that are selfsupporting will be established.
The main job of the early settlers will be able to stay alive. They will have to plant crops to produce food and oxygen and find water sources. After this is done, the settlers will have time to explore the possibilities of commercial development and to make discoveries important to science.
The characteristics of the moon that make it bad for human may make it ideal for certain kind of manufacturing. Operations requiring a vacuum, extremely cold or sterility (无菌状态) are examples. Industrial diamond may be produced on the moon.
1．The area of the moon is ________.
[ ]
A．about the same as that of the North and South America
B．larger than that of North and South America
C．equal to that of North and South America
D．far smaller than that of North and South America
2．The temperature on the moon can be as high as ________.
[ ]
3．According to the passage, the colonization of the moon ________.
[ ]
A．will be realized
B．can be done under lunar surface
C．is being speculated by many scientists
D．sounds entirely impossible.
4．To stay alive on the moon, the early settlers must first of all be able to ________.
[ ]
A．explore the possibilities of commerce
B．get enough food, oxygen and water
C．make discoveries important to science
D．set up industries
5．Though the environment on the moon is bad for human survival, it is very good for ________.
[ ]
A．making such things as industrial diamond
B．making discoveries important
C．producing food and oxygen
D．planting crops
查看习题详情和答案>>
The next great land area that man hopes to control is the moon. In size it is nearly equal to the area of North and South America. However, it presents a hostile (不友好的) environment. Temperatures range +120 to -150 degrees Centigrade (摄氏). There is no air, and no water.
Today there is considerable scientific speculation (思索) about living on the moon. When man will begin life on the moon surface is still not determined. But experts believe that settlement will take place in three steps. First, there will be increasing periods of exploration with temporary shelters (临时住所). These periods will be followed by longer stays with housing under the surface of the moon and daily necessities brought by the settlers themselves from the earth. Finally, settlements that are self-supporting will be founded.
The main job of the early settlers will be to stay alive. They will have to plant crops under huge domes (圆顶屋) to produce food and oxygen and find water sources. After this is done, the settlers will have time to explore the possibilities of commercial (商业的) development and to make discoveries important to science. The characteristics of the moon that make it bad for human staying alive may make it ideal for certain kinds of manufacturing (制造业). Operations requiring a vacuum (真空) or extreme cold are examples. Therefore, industrial diamonds might be produced on the moon.
1.The area of the moon is _________.
A. about the same as that of North and South America
B. larger than that of North and South America
C. hardly equal to that of North and South America
D. far smaller than that of North and South America
2.According to this passage, the settlement of the moon ________.
A. will soon be realized
B. can be done under the moon surface
C. is being experimented by many scientists
D. sounds entirely impossible
3.To stay alive on the moon, the early settlers must first of all be able to ________.
A. develop commerce
B. get enough food, oxygen and water
C. make discoveries important
D. explore the possibilities of industrial development
4.Though the environment on the moon is bad for human staying alive, it is very good for ________.
A. making such things as industrial diamonds B. all kinds of manufactured goods
C. medical operations D. commercial development
查看习题详情和答案>>
The next great land area that man hopes to colonize is the moon．In size it is nearly equal to the area of North and South America．However, it presents hostile environment．Temperatures range from ＋ 120 to －150 degrees centigrade．There is no air, no water．
Today there is considerable scientific speculation about living on the moon．When man will begin life on the lunar surface is still not determined．But experts believe that colonization
will take place in three steps．First, there will be increasing periods of exploration with temporary shelters．These periods will be followed by longer stays with housing under the surface of the moon and daily necessities brought by the colonizers themselves．Finally, colonies that are self-supporting will be established．
The main job of the early settlers will be able to stay alive．They will have to plant crops to produce food and oxygen and find water sources．After this is done, the settlers will have time to explore the possibilities of commercial development and to make discoveries important to science．
The characteristics of the moon that make it bad for human may make it ideal for certain kinds of manufacturing．For example, operations requiring a vacuum, extremely cold or sterility．Industrial diamond may be produced on the moon．
1．The area of the moon is________．
[ ]
A．about the same as that of the North and South America
B．larger than that of North and South America
C．equal to that of North and South America
D．far smaller than that of North and South America
2．According to the passage, the colonization of the moon________．
[ ]
A．will be realized soon
B．can be done under lunar surface
C．is being considered by many scientists
D．sounds entirely impossible
3．To stay alive on the moon, the early settlers must first of all be able to________．
[ ]
A．explore the possibilities of commerce
B．get enough food, oxygen and water
C．make discoveries important to science ?
D．set up industries
4．Though the environment on the moon is bad for human survival, it is very good for________．
[ ]
A．making such things as industrial diamond
B．making important discoveries
C．producing food and oxygen
D．planting crops
查看习题详情和答案>>