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Delta  The large river best known to the ancient Greeks was the Nile of Egypt. They spoke of the river with admiration and called Egypt “the gift of the Nile”. The reason for this was, first, that the Nile brought water to a rainless desert and, second, that once a year, the river overflowed its banks, leaving, as the water went back, a new layer of fertile soil.  The flood waters carry in them soil (called silt) from the upper parts of the river valley to the lower parts, and so to the sea. But as the river meets the sea, the sea acts as a barrier and forces the river to drop the silt it is carrying.  There are no tides in the Mediterranean to carry the silt away, so year after year it collects at the mouth of the Nile, and the river must find its way around islands of silt to the always more distant Mediterranean. In this way, a vast area of fertile soil has been built up at the mouth of the Nile and out into the sea. The river water splits up to form small branches winding across the area. To the ancient Greeks, the mouth of the Nile looked like the drawing.  Now we sometimes name things after the letters of the alphabet they resemble: a U-turn, an I-beam a T-square, an S-bend, and so on. The Greeks did the same. The triangular area of land built up at the mouth of the Nile looked like the fourth letter of the Greek alphabet delta (△) and so this was the name they gave it. The word is now used for all areas of land formed at the mouth of rivers which flow into tideless seas, even when they are nor triangular in shape. The Mississippi delta, for example, is not shaped at all like the Greek delta, as you will see if you look at a map.

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更多 “问答题Delta  The large river best known to the ancient Greeks was the Nile of Egypt. They spoke of the river with admiration and called Egypt “the gift of the Nile”. The reason for this was, first, that the Nile brought water to a rainless desert and, second, that once a year, the river overflowed its banks, leaving, as the water went back, a new layer of fertile soil.  The flood waters carry in them soil (called silt) from the upper parts of the river valley to the lower parts, and so to the sea. But as the river meets the sea, the sea acts as a barrier and forces the river to drop the silt it is carrying.  There are no tides in the Mediterranean to carry the silt away, so year after year it collects at the mouth of the Nile, and the river must find its way around islands of silt to the always more distant Mediterranean. In this way, a vast area of fertile soil has been built up at the mouth of the Nile and out into the sea. The river water splits up to form small branches winding across the area. To the ancient Greeks, the mouth of the Nile looked like the drawing.  Now we sometimes name things after the letters of the alphabet they resemble: a U-turn, an I-beam a T-square, an S-bend, and so on. The Greeks did the same. The triangular area of land built up at the mouth of the Nile looked like the fourth letter of the Greek alphabet delta (△) and so this was the name they gave it. The word is now used for all areas of land formed at the mouth of rivers which flow into tideless seas, even when they are nor triangular in shape. The Mississippi delta, for example, is not shaped at all like the Greek delta, as you will see if you look at a map.” 相关考题
考题 Which river is()longest,the Nile, the Amazon, or the Mississippi? A.aB.the

考题 The Nile is one of the ( ) rivers of Africa.A、principleB、princessC、principalD、province

考题 The river ________ to the east. It is the second longest river in the country. A.runsB.is runningC.runD.ran

考题 El Abbasa (Sweet Water) Canal______from River Nile at Cairo to Suez Canal at Ismaili.A.extendB.extendingC.are extendingD.extends

考题 共用题干 Egypt Felled by FamineEven ancient Egypt's mighty pyramid builders were powerless in the face of the famine that helped bring down their civilization around 2180 BC.Now evidence gleaned(搜集)from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame-and the same or worse could happen today.The ancient Egyptians depended on the Nile's annual floods to irrigate their crops.But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have diminished these floods.Dwindling(使减少)rains in the Ethiopian highlands would have meant fewer plants to establish the soil.When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt,along with sediment(沉积物)from the White Nile.The Blue Nile mud has a different isotope(同位素)signature from that of the White Nile.So by analyzing isotope differences in mud deposited in the Nile Delta,Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.Krom reasons that during periods of drought,the amount of the Blue Nile mud in the river would be relatively high.He found that one of these periods,from 4,500 to 4,200 years ago,immediately predated the fall of the Egypt's old Kingdom.The weakened waters would have been catastrophic for the Egyptians."Changes that affect food supply don't have to be very large to have a ripple effect in societies,"says Bill Ryan of the Lamont Doherty Earth Observatory(天文台)in New York."Similar events today coald be even more devastating,"says team member Daniel Stanley,a geoarchaeologist from the Smithsonian Institution in Washington, D.0."Anything humans do to shift the climate belts woulld have an even worse effect along the Nile system because the populations have increased dramatically."Why does the author mention"pyramid builders"?A:Because they once worked miracles.B:Because they were well-built.C:Because they were actually very weak.D:Because even they were unable to rescue their civilization.

考题 共用题干 第三篇Egypt Felled by FamineEven ancient Egypt's mighty pyramid builders were powerless in the face of the famine that helped bring down their civilization around 2180 BC. Now evidence gleaned(搜集)from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame一and the same or worse could happen today.The ancient Egyptians depended on the Nile's annual floods to irrigate their crops.But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have diminished these floods.Dwindling(逐渐变少;使变少)rains in the Ethiopian highlands would have meant fewer plants to establish the soil.When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt,along with sediment(沉积;沉积物)from the White Nile.The Blue Nile mud has a different isotope(同位素;核素)signature from that of the White Nile. So by analyzing isotope differences in mud deposited in the Nile Delta,Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.Krom reasons that during periods of drought,the amount of the Blue Nile mud in the river would be relatively high.He found that one of these periods,from 4,500 to 4,200 years ago,immediately predated the fall of the Egypt's old Kingdom.The weakened waters would have been catastrophic for the Egyptians."Changes that affect food supply don't have to be very large to have a ripple effect in societies,"says Bill Ryan of the Lamont Doherty Earth Observatory(天文台)in New York."Similar events today could be even more devastating,"says team member Daniel Stanley,a geoarchaeologist(地质考古学家)from the Smithsonian Institution in Washington , D. C. " Anything humans do to shift the climate belts would have an even worse effect along the Nile system because the populations have increased dramatically."The word"devastating"in the last paragraph could be best replaced by_______________.A:frustratingB:damagingC:defeatingD:worrying

考题 共用题干 Egypt Felled by FamineEven ancient Egypt's mighty pyramid builders were powerless in the face of the famine that helped bring down their civilization around 2180 BC.Now evidence gleaned(搜集)from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame-and the same or worse could happen today.The ancient Egyptians depended on the Nile's annual floods to irrigate their crops.But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have diminished these floods.Dwindling(使减少)rains in the Ethiopian highlands would have meant fewer plants to establish the soil.When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt,along with sediment(沉积物)from the White Nile.The Blue Nile mud has a different isotope(同位素)signature from that of the White Nile.So by analyzing isotope differences in mud deposited in the Nile Delta,Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.Krom reasons that during periods of drought,the amount of the Blue Nile mud in the river would be relatively high.He found that one of these periods,from 4,500 to 4,200 years ago,immediately predated the fall of the Egypt's old Kingdom.The weakened waters would have been catastrophic for the Egyptians."Changes that affect food supply don't have to be very large to have a ripple effect in societies,"says Bill Ryan of the Lamont Doherty Earth Observatory(天文台)in New York."Similar events today coald be even more devastating,"says team member Daniel Stanley,a geoarchaeologist from the Smithsonian Institution in Washington, D.0."Anything humans do to shift the climate belts woulld have an even worse effect along the Nile system because the populations have increased dramatically."Which of the following factors was ultimately responsible for the fall of the civilization of ancient Egypt?A:Change of climate. B:Famine.C:Food. D:Population growth.

考题 共用题干 第三篇Egypt Felled by FamineEven ancient Egypt's mighty pyramid builders were powerless in the face of the famine that helped bring down their civilization around 2180 BC. Now evidence gleaned(搜集)from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame一and the same or worse could happen today.The ancient Egyptians depended on the Nile's annual floods to irrigate their crops.But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have diminished these floods.Dwindling(逐渐变少;使变少)rains in the Ethiopian highlands would have meant fewer plants to establish the soil.When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt,along with sediment(沉积;沉积物)from the White Nile.The Blue Nile mud has a different isotope(同位素;核素)signature from that of the White Nile. So by analyzing isotope differences in mud deposited in the Nile Delta,Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.Krom reasons that during periods of drought,the amount of the Blue Nile mud in the river would be relatively high.He found that one of these periods,from 4,500 to 4,200 years ago,immediately predated the fall of the Egypt's old Kingdom.The weakened waters would have been catastrophic for the Egyptians."Changes that affect food supply don't have to be very large to have a ripple effect in societies,"says Bill Ryan of the Lamont Doherty Earth Observatory(天文台)in New York."Similar events today could be even more devastating,"says team member Daniel Stanley,a geoarchaeologist(地质考古学家)from the Smithsonian Institution in Washington , D. C. " Anything humans do to shift the climate belts would have an even worse effect along the Nile system because the populations have increased dramatically."Which of the following factors was ultimately responsible for the fall of the civilization of ancient Egypt?A:Change of climate.B:Famine.C:Food.D:Population growth.

考题 共用题干 第三篇Egypt Felled by FamineEven ancient Egypt's mighty pyramid builders were powerless in the face of the famine that helped bring down their civilization around 2180 BC. Now evidence gleaned(搜集)from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame一and the same or worse could happen today.The ancient Egyptians depended on the Nile's annual floods to irrigate their crops.But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have diminished these floods.Dwindling(逐渐变少;使变少)rains in the Ethiopian highlands would have meant fewer plants to establish the soil.When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt,along with sediment(沉积;沉积物)from the White Nile.The Blue Nile mud has a different isotope(同位素;核素)signature from that of the White Nile. So by analyzing isotope differences in mud deposited in the Nile Delta,Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.Krom reasons that during periods of drought,the amount of the Blue Nile mud in the river would be relatively high.He found that one of these periods,from 4,500 to 4,200 years ago,immediately predated the fall of the Egypt's old Kingdom.The weakened waters would have been catastrophic for the Egyptians."Changes that affect food supply don't have to be very large to have a ripple effect in societies,"says Bill Ryan of the Lamont Doherty Earth Observatory(天文台)in New York."Similar events today could be even more devastating,"says team member Daniel Stanley,a geoarchaeologist(地质考古学家)from the Smithsonian Institution in Washington , D. C. " Anything humans do to shift the climate belts would have an even worse effect along the Nile system because the populations have increased dramatically."According to Krom,Egypt's Old Kingdom fell_______________.A:immediately after a period of droughtB:immediately after a period of floodC:just before a drought struckD:just before a flood struck

考题 共用题干 Egypt Felled by FamineEven ancient Egypt's mighty pyramid builders were powerless in the face of the famine that helped bring down their civilization around 2180 BC.Now evidence gleaned(搜集)from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame-and the same or worse could happen today.The ancient Egyptians depended on the Nile's annual floods to irrigate their crops.But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have diminished these floods.Dwindling(使减少)rains in the Ethiopian highlands would have meant fewer plants to establish the soil.When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt,along with sediment(沉积物)from the White Nile.The Blue Nile mud has a different isotope(同位素)signature from that of the White Nile.So by analyzing isotope differences in mud deposited in the Nile Delta,Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.Krom reasons that during periods of drought,the amount of the Blue Nile mud in the river would be relatively high.He found that one of these periods,from 4,500 to 4,200 years ago,immediately predated the fall of the Egypt's old Kingdom.The weakened waters would have been catastrophic for the Egyptians."Changes that affect food supply don't have to be very large to have a ripple effect in societies,"says Bill Ryan of the Lamont Doherty Earth Observatory(天文台)in New York."Similar events today coald be even more devastating,"says team member Daniel Stanley,a geoarchaeologist from the Smithsonian Institution in Washington, D.0."Anything humans do to shift the climate belts woulld have an even worse effect along the Nile system because the populations have increased dramatically."Which of the following statements is true?A:The White Nile is the trunk of the River Nile.B:The White Nile is the trunk of the Blue Nile.C:The White Nile is a branch of the Blue Nile.D:The White Nile and the Blue Nile are branches of the River Nile.

考题 共用题干 Egypt Felled by FamineEven ancient Egypt's mighty pyramid builders were powerless in the face of the famine that helped bring down their civilization around 2180 BC.Now evidence gleaned(搜集)from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame-and the same or worse could happen today.The ancient Egyptians depended on the Nile's annual floods to irrigate their crops.But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have diminished these floods.Dwindling(使减少)rains in the Ethiopian highlands would have meant fewer plants to establish the soil.When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt,along with sediment(沉积物)from the White Nile.The Blue Nile mud has a different isotope(同位素)signature from that of the White Nile.So by analyzing isotope differences in mud deposited in the Nile Delta,Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.Krom reasons that during periods of drought,the amount of the Blue Nile mud in the river would be relatively high.He found that one of these periods,from 4,500 to 4,200 years ago,immediately predated the fall of the Egypt's old Kingdom.The weakened waters would have been catastrophic for the Egyptians."Changes that affect food supply don't have to be very large to have a ripple effect in societies,"says Bill Ryan of the Lamont Doherty Earth Observatory(天文台)in New York."Similar events today coald be even more devastating,"says team member Daniel Stanley,a geoarchaeologist from the Smithsonian Institution in Washington, D.0."Anything humans do to shift the climate belts woulld have an even worse effect along the Nile system because the populations have increased dramatically."The word"devastating"in the last paragraph could be best replaced by______.A:frustrating B:damagingC:defeatingD:worrying

考题 Which site did Ms. Dorn most enjoy?A.The Valley of the Kings B.The Nile River C.The city of Cario D.The pyramids of Giza

考题 Mindful travel,Inc.—Treasures of Egypt Dates:October 21 st—November 5th Price:from $2.190 Stimulate your imagination a8 you explore Egypt,both old and new.Stand before the great Pyramids of Giza at sunrise.Acquaint yourself with the bustling districts and vibrant culture of the capital city,Carl0.Travel up the majestic Nile River and visit the amazing Valley of the Kings ,where you can tour the famous tomb of“King Tut”.But best of all,our guide will share their knowledge of these sites with you,helping you to understand both the history and the modern culture of this amazing country.Expand your mind with Mindful Travel,Inc. Package price does not include airfare to or from Cairo. Mindful Travel.Inc. Public Relations Office 11 Derry Lane London,England November 9,2006 Dear MT representative, Having recently returned from your company’s Treasure of Egypt tour,I’m happy to report that I had a wonderful time.I don’t think I’ve ever had such an enjoyable and educational vacation.1 was particular impressed with how much I learned about history of Egypt,as well as what the country is like today. All of the guides and other MT employees assisting me during my travels were courteous.Helpful,and very knowledgeable about the fascinating historical sites that I visited.Please extent my thanks especially to Mr.Mokhta Said,who guided me around the Valley of the Kings.That was the highlight of my trip. 1’m going to share my experiences with friends and family,and l will definitely suggest that they travel with MT the next time they take a vacation. Thank you again,Leila Dorn Which site did Ms.Dora most enjoy?A.The Valley of the Kings B.The Nile River C.The city of Carlo D.The pyramids of Giza

考题 共用题干 WaterFrom the beginning,water has furnished man with a source of food and a highway to travel upon.The first civilization arose(51)________water was a dominant element in the environment,a challenge(52)______man's ingenuity.The Egyptians invented the 365一day calendar in response to the Nile's annual flooding. The Babylonians,(53)________were among the most famous lawmakers in ancient times,invented laws(54)_________ water usage.Water inspired the Chinese to build a 1,000-(55)________canal,a complex system which,after nearly 2,500 years,remains still practically(56)_______ and still commands the astonishment of engineers.But (57)_________never found complete solutions to their water problems.The Yellow River is also known as "China's Sorrow" ;it is so unpredictable and dangerous(58)_________in a single flood it has caused a million(59)________.Floods slowed the great(60)_________of the Indus River Valley,and inadequate drainage ruined (61)________of its land. Today water dominates man (62)_______it always has done.Its presence continues to(63)________the location of his homes and cities;its violent variability can(64)________man or his herds or his crops;its routes links him(65)________his fellows;its immense value may add to already dangerous political conflicts.There are many examples of this in our own time._________(51)A:where B:the placeC:when D:in the place

考题 The river,which is__________the Yangtze River,is the longest river in China.A.named after B.known for C.known as D.called for

考题 共用题干 第二篇Ancient Egypt Brought Down by FamineEven ancient Egypt's mighty pyramid(金字塔)builders were powerless in the face of the famine(饥荒)that helped bring down their civilization around 2180 BC.Now evidencecollected from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame一and the same or worse could happen today.The ancient Egyptians depended on the Nile's annual floods to irrigate their crops.But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have reduced these floods.Declining rains in the Ethiopian highlands would have meant fewer plants to stabilize the soil.When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt,along with sediment(沉积)from the White Nile.Blue Nile mud has a different isotope(同位素)signature from that of the White Nile.So by analyzing isotope differences in mud deposited in the Nile Delta,Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.Krom reasons that during periods of drought,the amount of Blue Nile mud in the river would be relatively high.He found that one of these periods,from 4500 to 4200 years ago, immediately came before the fall of the Egypt's Old Kingdom.The weakened waters would have been disaster for the Egyptians."Changes that affect food supply don't have to be very large to have a ripple(波浪)effect in societies."says Bill Ryan of the Lamont Doherty Earth Observatory in New York.Similar events today could be even more devastating,says team member Daniel Stanley,a scientist from the Smithsonian Institution in Washington D.C,"Anything humans do to shift the climate belts would have an even worse effect along the Nile system today because the populations have increased dramatically."According to Krom,the Egypt's Old Kingdom fellA:immediately after a period of drought.B:immediately after a period of flood.C:just before a drought struck.D:just before a flood struck.

考题 共用题干 第二篇Ancient Egypt Brought Down by FamineEven ancient Egypt's mighty pyramid(金字塔)builders were powerless in the face of the famine(饥荒)that helped bring down their civilization around 2180 BC.Now evidencecollected from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame一and the same or worse could happen today.The ancient Egyptians depended on the Nile's annual floods to irrigate their crops.But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have reduced these floods.Declining rains in the Ethiopian highlands would have meant fewer plants to stabilize the soil.When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt,along with sediment(沉积)from the White Nile.Blue Nile mud has a different isotope(同位素)signature from that of the White Nile.So by analyzing isotope differences in mud deposited in the Nile Delta,Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.Krom reasons that during periods of drought,the amount of Blue Nile mud in the river would be relatively high.He found that one of these periods,from 4500 to 4200 years ago, immediately came before the fall of the Egypt's Old Kingdom.The weakened waters would have been disaster for the Egyptians."Changes that affect food supply don't have to be very large to have a ripple(波浪)effect in societies."says Bill Ryan of the Lamont Doherty Earth Observatory in New York.Similar events today could be even more devastating,says team member Daniel Stanley,a scientist from the Smithsonian Institution in Washington D.C,"Anything humans do to shift the climate belts would have an even worse effect along the Nile system today because the populations have increased dramatically."The word "devastating" in the last paragraph could be best replaced byA:"frustrating".B:"damaging".C:"defeating".D:"worrying".

考题 共用题干 第二篇Ancient Egypt Brought Down by FamineEven ancient Egypt's mighty pyramid(金字塔)builders were powerless in the face of the famine(饥荒)that helped bring down their civilization around 2180 BC.Now evidencecollected from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame一and the same or worse could happen today.The ancient Egyptians depended on the Nile's annual floods to irrigate their crops.But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have reduced these floods.Declining rains in the Ethiopian highlands would have meant fewer plants to stabilize the soil.When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt,along with sediment(沉积)from the White Nile.Blue Nile mud has a different isotope(同位素)signature from that of the White Nile.So by analyzing isotope differences in mud deposited in the Nile Delta,Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.Krom reasons that during periods of drought,the amount of Blue Nile mud in the river would be relatively high.He found that one of these periods,from 4500 to 4200 years ago, immediately came before the fall of the Egypt's Old Kingdom.The weakened waters would have been disaster for the Egyptians."Changes that affect food supply don't have to be very large to have a ripple(波浪)effect in societies."says Bill Ryan of the Lamont Doherty Earth Observatory in New York.Similar events today could be even more devastating,says team member Daniel Stanley,a scientist from the Smithsonian Institution in Washington D.C,"Anything humans do to shift the climate belts would have an even worse effect along the Nile system today because the populations have increased dramatically."Which of the following factors was ultimately responsible for bringing down the civilization of ancient Egypt?A:Change of climate.B:Corruption.C:Flood.D:Population growth.

考题 共用题干 第二篇Ancient Egypt Brought Down by FamineEven ancient Egypt's mighty pyramid(金字塔)builders were powerless in the face of the famine(饥荒)that helped bring down their civilization around 2180 BC.Now evidencecollected from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blame一and the same or worse could happen today.The ancient Egyptians depended on the Nile's annual floods to irrigate their crops.But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have reduced these floods.Declining rains in the Ethiopian highlands would have meant fewer plants to stabilize the soil.When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt,along with sediment(沉积)from the White Nile.Blue Nile mud has a different isotope(同位素)signature from that of the White Nile.So by analyzing isotope differences in mud deposited in the Nile Delta,Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.Krom reasons that during periods of drought,the amount of Blue Nile mud in the river would be relatively high.He found that one of these periods,from 4500 to 4200 years ago, immediately came before the fall of the Egypt's Old Kingdom.The weakened waters would have been disaster for the Egyptians."Changes that affect food supply don't have to be very large to have a ripple(波浪)effect in societies."says Bill Ryan of the Lamont Doherty Earth Observatory in New York.Similar events today could be even more devastating,says team member Daniel Stanley,a scientist from the Smithsonian Institution in Washington D.C,"Anything humans do to shift the climate belts would have an even worse effect along the Nile system today because the populations have increased dramatically."Which of the following statements is true?A:The White Nile is the trunk of the River Nile.B:The White Nile is the trunk of the Blue Nile.C:The White Nile is a branch of the Blue Nile.D:The White Nile is a branch of the River Nile.

考题 The river () to the east. It is the second longest river in the country.A、runsB、is runningC、runD、ran

考题 单选题Why do some people get sick after drinking the water from the river?A Because the river is pollutedB Because the river makes the earth more beautifulC Because the river can only offer water to animalsD Because there are too many animals and plants in the river

考题 单选题How did Bob save the girl in the river?A He called out and jumped into the river.B He jumped into the river and pulled her out.C He jumped into the river and hardly swam.D He took off his clothes and called out.

考题 单选题______Yellow River is known to be______second longest river in China.A The; theB /; /C The;/D /; the

考题 单选题The river () to the east. It is the second longest river in the country.A runsB is runningC runD ran

考题 单选题The term “Father of Waters” is used to refer to _____ in the US.A the Nile RiverB the Amazon RiverC the Hudson RiverD the Mississippi River

考题 问答题Practice 5  The large river best known to the ancient Greeks was the Nile of Egypt. They spoke of the river with admiration and called Egypt “the gift of the Nile”. The reason for this was, first, that the Nile brought water to a rainless desert and, second, that once a year, the river overflowed its banks, leaving, as the water went back, a new layer of fertile soil.  The flood waters carry in them soil (called silt) from the upper parts of the river valley to the lower parts, and so to the sea. But as the river meets the sea, the sea acts as a barrier and forces the river to drop the silt it is carrying.  There are no tides in the Mediterranean to carry the silt away, so year after year it collects at the mouth of the Nile, and the river must find its way around islands of silt to the always more distant Mediterranean. In this way, a vast area of fertile soil has been built up at the mouth of the Nile and out into the sea. The river water splits up to form small branches winding across the area. To the ancient Greeks, the mouth of the Nile looked like the drawing.  Now we sometimes name things after the letters of the alphabet they resemble: a U-turn, an I-beam a T-square, an S-bend, and so on. The Greeks did the same. The triangular area of land built up at the mouth of the Nile looked like the fourth letter of the Greek alphabet delta (Δ) and so this was the name they gave it. The word is now used for all areas of land formed at the mouth of rivers which flow into tideless seas, even when they are nor triangular in shape. The Mississippi delta, for example, is not shaped at all like the Greek delta, as you will see if you look at a map.

考题 单选题According to information given in the passage, which of the following locations would probably yield the highest probability of finding a previously undiscovered papyrus fragment?A The ship of a royal messenger that sank off the Egyptian coast of the Mediterranean Sea in the third century B. C.B The charred remnants of an ancient Egyptian palace that was burned by Roman troops in the first century B. C.C The refuse heap of an ancient Egyptian town that was buried in the desert in the fifth century A. D.D The private collections of French and British explorers from the nineteenth century A. D. who first uncovered many of the principal sites of Egyptian archeologyE The library of a Hellenistic fishing village that sank into the marshes of the Nile Delta in the third century A. D.