[单项选择]There are warm tropical regions all over the globe, but only the Indians of the South American rain forests have formed the habit of sleeping in the open air. Long before they made painful acquaintance (相识) with Europeans, they had invented something that was unique on earth: the hammock.
Nobody really knows who first had the bright idea of making sleeping in the air the symbol of untroubled rest. The Indians see the hammock as a "gift of heaven (上天)", something given to them a very long time ago.
In it the Indians pass away hot noon hours, napping or chatting. Swinging it to and fro (来回摆动) creates a cooling breath of air and keeps away insects. They work and play in hammocks, are born and die there.
Hung like a suspension bridge between heaven and earth, a hammock is dry while the soil is damp and is safe from most wild animals.
Hammocks have the advantage over beds in that they are easy to transport and take up very little space when they have been rolled
A. pray to heaven for a gift
B. keep away flies, mosquitoes and other insects
C. keep away wild animals
D. all asleep quickly

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[单项选择]There are warm tropical regions all over the globe, but only the Indians of the South American rain forests have formed the habit of sleeping in the open air. Long before they made painful acquaintance (相识) with Europeans, they had invented something that was unique on earth: the hammock.
Nobody really knows who first had the bright idea of making sleeping in the air the symbol of untroubled rest. The Indians see the hammock as a "gift of heaven (上天)", something given to them a very long time ago.
In it the Indians pass away hot noon hours, napping or chatting. Swinging it to and fro (来回摆动) creates a cooling breath of air and keeps away insects. They work and play in hammocks, are born and die there.
Hung like a suspension bridge between heaven and earth, a hammock is dry while the soil is damp and is safe from most wild animals.
Hammocks have the advantage over beds in that they are easy to transport and take up very little space when they have been rolled
A. a suspension cage which can be swung to and fro in the air
B. a seat hanging by two ropes from the branch of a tree
C. a suspension bridge in the South American rain forests
D. a net hung between two supports and used as a bed

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[简答题]Normally, in tropical regions where the sun is very strong, the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation.
______

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[单项选择]Passage Four

Students all over the world have to work for their education. A college education in the United States is expensive. The costs are so high that most families begin to save for their children’s education when their children are babies. Even so, many young people cannot afford to pay the expenses of full-time college work. They do not have enough money to pay for school costs. Tuition for attending the university, books for classes, and living expenses are high. There are other expenses such as chemistry and biology lab fees and special student activity fees for such things as parking permits and football tic, kets. The cost of college education increases every year. However, classrooms are still crowded with students. Some American students have scholarships or other support, but many do not.
Students from other countries have m
A. inexpensive
B. high
C. free from charge
D. costless

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[单项选择]Foreign investment is expanding rapidly all over the world. Most of the foreign companies who have invested in the U. S. are Japanese and European. An example of the Japanese company in the U. S. is Toyota Motor Company, which produces cars. An example of a European company is Nestle of Switzerland. Nestle is a European company, but 99% of its investments are in other countries.
In Europe, there are examples of foreign investment. Many American companies have invested in Europe, and many Japanese companies have also invested in Europe.
In recent years much foreign investment has shifted from the U. S. and Europe to Asia. Many companies from Japan, the United States and Europe are investing heavily in China. Other parts of Asia, such as India and the countries of Southeast Asia, are attracting a lot of American, Japanese and European investment as well.
What is the main topic of this passage
A. Foreign investment in China.
B. Foreign investment in the U. S.
C. Foreign investment all over the world.
D. How to invest in other countries.

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