Deserts are found where there is little rainfall or where rain for a whole year falls in only a few weeks' time. Ten inches of rain may be enough for many plants to survive if the rain is spread throughout the year, If it falls, within one or two months and the rest of the year is dry, those plants may die and a dese
rt may form.
Sand begins as tiny pieces of rock that get smaller and smaller as wind and weather wear them down. Sand dunes (沙丘) are formed as winds move the sand across the desert. Bit by bit, the dunes grow over the years, always moving with the winds and changing the shape. Most of them are only a few feet tall, but they can grow to be several hundred feet high.
There is, however, much more to a desert than sand. In the deserts of the southwestern United States, cliffs (悬崖) and deep valleys were formed from thick mud that once lay beneath a sea more than millions of years ago. Over the centuries, the water dried up. Wind, sand, rain, heat and cold all wore away at the remaining rocks. The faces of the desert mountains are always changing –-very, very slowly ---as these forces of nature continue to work on the rock.
Most deserts have a surprising variety of life. There are plants, animals and insects that :have adapted to life in the desert. During the heat of the day' a visitor may see very few signs of living things, but as the air begins to cool in the evening, the desert comes to life. As the sun begins to rise again in the sky, the desert once again becomes quiet and lonely.
68. Many plants may survive in deserts when__________________.
A. the rain is spread out in a year B. the rain falls only in a few weeks
C. there is little rain in a year D. it is dry all the year round
69. Sand dunes are formed when___________________.
A. sand piles up gradually B. there is plenty of rain in a year
C. the s
ea has dried up over the years D. pieces of rock get smaller
70. The underlined sentence in the third paragraph probably means that in a desert there is____________.
A. too much sand B. more sand than before
C. nothing except sand D. something else besides sand
71. It can be learned from the text that in a desert____________.
A. there is no rainfall throughout the year B. life exists in rough conditions
C. all sand dunes are a few feet high D. rocks are worn away only by wind and heat
科目：高中英语 来源： 题型：阅读理解
Deserts are found where there is little rainfall or where rain for a whole year falls in only a few weeks’ time. Ten inches of rain may be enough for many plants to survive （存活）if the rain is spread throughout the year, If it falls, within one or two months and the rest of the year is dry, those plants may die and a desert may form.
Sand begins as tiny pieces of rock that get smaller and smaller as wind and weather wear them down. Sand dunes （沙丘） are formed as winds move the sand across the desert. Bit by bit, the dunes grow over the years, always moving with the winds and changing the shape. Most of them are only a few feet tall, but they can grow to be several hundred feet high.
There is, however, much more to a desert than sand. In the deserts of the southwestern United States, cliffs （悬崖） and deep valleys were formed from thick mud that once lay beneath a sea more than millions of years ago. Over the centuries, the water dried up. Wind, sand, rain, heat and cold all wore away at the remaining rocks. The faces of the desert mountains are always changing – very, very slowly – as these forces of nature continue to work on the rock.
Most deserts have a surprising variety of life. There are plants, animals and insects that have adapted to life in the desert. During the heat of the day, a visitor may see very few signs of living things, but as the air begins to cool in the evening, the desert comes to life. As the sun begins to rise again in the sky, the desert once again becomes quiet and lonely.
60. Many plants may survive in deserts when__________________.
A. the rain is spread out in a year B. the rain falls only in a few weeks
C. there is little rain in a year D. it is dry all the year round
61. Sand dunes are formed when___________________.
A. sand piles up gradually B. there is plenty of rain in a year
C. the sea has dried up over the years D. pieces of rock get smaller
62. The underlined sentence in the third paragraph probably means that in a desert there is____________.
A. too much sand B. more sand than before
C. nothing except sand D. something else besides sand
63 It can be learned from the text that in a desert ____________.
A. there is no rainfall throughout the year B. life exists in rough conditions
C. all sand dunes are a few feet high D. rocks are worn away only by wind and heat
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科目：高中英语 来源： 题型：阅读理解
The deserts of the world are not all covered with sand. Many of them have surfaces of rock or clay or small stones. They are not flat, either. They often have high hills and deep valleys. There is some plants’ life in many parts of the desert. There is little rain in the desert, but it does fall often enough for most plants.
The deserts of the world are not uninhabited(not lived by people). People also live outside oases(绿洲), but these people are not farmers. They have camels, goats, donkeys, sheep, etc. These animals can live on the desert plants and do not need much water.
The people of the desert have to move constantly from place to place, they must always look for grass or desert plants for their animals. They usually live in tents. When there is no more food for their animals, they fold up their tents, pat them on their camels and donkeys, and move to another place. In good years, when there is enough food for their animals, they trade their skins and their goats and camel hairs with the people of oases for wheat and fruit. But in bad years, when there is not enough food for their animals, the people of the desert would attack the oases people. But they are also hospitable, no man in the desert would ever refuse to give a stranger food and water.
According to the passage, deserts are mostly made up of _______.
A. clay B. rock C. sand D. stones
The underlined word “hospitable” has the meaning of being _______.
A. brave B. cruel C. strange D. kind
In the desert _______.
A. it rains in spring only
B. it rains for a short time every month
C. there is some rain, but far from enough
D. the rainfall is just enough for the plants
People live _______.
A. only inside the oases B. only outside the oases
C. both inside and outside the oases D. in places with regular rainfalls
From the passage we know that life _______.
A. is hard in deserts B. is happy in deserts
C. is impossible in deserts D. in deserts is much better now
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科目：高中英语 来源： 题型：阅读理解
Deserts are found where there is little rainfall or where rain for a whole year falls in only a few weeks' time. Ten inches of rain may be enough for many plants to survive (存活)if the rain is
spread throughout the year, If it falls, within one or two months and the rest of the year is dry, those plants may die and a desert may form.
Sand begins as tiny pieces of rock that get smaller and smaller as wind and weather wear them down. Sand dunes (沙丘) are formed as winds move the sand across the desert. Bit by bit, the
dunes grow over the years, always moving with the winds and changing the shape. Most of them are only a few feet tall, but they can grow to be several hundred feet high.
There is, however, much more to a desert than sand. In the deserts of the southwestern United States, cliffs (悬崖) and deep valleys were formed from thick mud that once lay beneath a sea more than millions of years ago. Over the centuries, the water dried up. Wind, sand , rain, heat and cold all wore away at the remaining rocks. The faces of the desert mountains are always changing -very, very slowly ---as these forces of nature continue to work on the rock.
Most deserts have a surprising variety of life. There are plants, animals and insects that :have adapted to life in the desert. During the heat of the day, a visitor may see very few signs of living things, but as the air begins to cool in the evening, the desert comes to life. As the sun begins to rise again in the sky, the desert once again becomes quiet and lonely.
60. Many plants may survive in deserts when__________________.
A. the rain is spread out in a year B. the rain falls only in a few weeks
C. there is little rain in a year D. it is dry all the year round
61. Sand dunes are formed when___________________.
A. sand piles up gradually B. there is plenty of rain in a year
C. the sea has dried up over the years D. pieces of rock get smaller
62. The underlined sentence in the third paragraph probably means that in a desert there is____________.
A. too much sand B. more sand than before
C. nothing except sand D. something else besides sand
63 It can be learned from the text that in a desert____________.
A. there is no rainfall throughout the year B. life exists in rough conditions
C. all sand dunes are a few feet high D. rocks are worn away only by wind and heat
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科目：高中英语 来源：2011-2012学年甘肃省武威第五中学高二5月月考英语试卷（带解析） 题型：完型填空
All children in the United States have to receive an education, but not all children go to school. A number of parents 36 not to send their children to school. Such children are known 37 “home-schoolers”. Some parents prefer teaching their children at home 38 they do not believe schools teach the correct religious (宗教的) 39 ; others believe they can provide a better educational 40 for their children by doing so. 41 , results show home-schooled children often do better than 42 on national tests in reading and math.
David teaches his three children at home. He 43 that his children learn very differently from children in school. Learning starts with the children’s 44 and questions. For example, when there is snowfall on a winter day, it may 45 a discussion about climate, snow removal 46 , Alaska, etc. Or a spring evening when the family is out 47 the stars is a good time to ask questions about the sky. If the Brazilian rain forests are on TV, it 48 be a perfect time to talk about how rain forests influence the climate, how deserts are 49 and how the polar ice caps 50 ocean levels.
Home schooling is often more interesting than 51 schools, but critics (批评家) say home-schoolers might be uncomfortable 52 with other people in adult life. Critics also say that most parents are not 53 to teach their children. However, most parents don’t have the time or the 54 to teach their children at home, so schools will continue to be 55 most children get their formal education.
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