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The problem of underground water is more serious because（ ）
[A] the underground water trickles away all the year round
[B] the underground water is hidden deep beneath the Earth
[C] the change of it must be controlled by the NASA's satellites
[D] the dramatic change of it might affect the gravitational field
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更多 “ The problem of underground water is more serious because（ ）[A] the underground water trickles away all the year round[B] the underground water is hidden deep beneath the Earth[C] the change of it must be controlled by the NASA's satellites[D] the dramatic change of it might affect the gravitational field ” 相关考题
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I’ve brought two babies with me. It’s really inconvenient for me to drive to the underground parking lot.A.Don’t worry. I’ll take care of your babies while you’re driving to the underground parking lot.B.Don’t worry. Someone will drive to the underground parking lot for you with little chargeC.I’m sorry. There is no vacancy right nowD.Don’t bother about it. We provide free valet service
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Tibet, the second largest province of China, is ________ in uranium and underground thermal power.
A.wealthyB.abundantC.adequateD.sufficient
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Which of the following is true?A.The water in Texas have been reduced by 75%.B.Most industries in the world suffer from water shortagers.C.The underground water in Saudi Arabia might run out in 50 years.D.Good management of water use resulted from the project in the Central Valley.
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Why does author say that they were lucky in the third paragraph?A. Because her situation was not serious.B. Because many other places were flooded.C. Because she had been to Northern India.D. Because some others suffered even more.
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BThe world is not only hungry，it is also thirsty for water． this may seem strange to you，since nearly 75% of the earth is covered with water． But about 97% of this water is sea water．Man can only drink and use the other 3% fresh water that comes from rivers，lakes，under-ground and other places． And we cannot even use all of that，because some of this fresh water has been made dirty．At the moment，this small amount(数量) of fresh water is still enough for us． However，our need for water is getting greater and greater． Only if we take steps to solve this problem now，we can get away from a serious world water shortage later on． The people of the world cannot have an enjoyable life without enough clean water．On one hand we should stop wasting this little water of ours，on the other hand we should find ways to reuse it，but this has not been done widely．Today，in most large cities，water is used only once and it then returns to the sea or runs into underground places．lf we can make it clean again，it can be used once more just as if it were fresh from a spring．But even if large cities reuse its water，we still would not have enough in the future． Where．could we turn to next for water? To the ocean! How can we do to make use of this great a-mount of sea water? We can take the salt from the water to make it fresh．So if we take all these steps，we'll be in no danger of drying up!( )26． Why does the writer say that the world is thirsty for water?A． The amount of fresh water is really very small．B． The people of the world waste too much water．C． The people of the world have to drink a lot of water every day．D． There are too many people in the world needing water．
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The_______ of the system of regional autonomy for ethnic minorities has underground long periods of exploration and practice.A.foundation
B.establishment
C.setting
D.settlement
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The scientists are exploring the area in hopes of finding new stores of underground oil,which can serve as an outlet for the energy crisis.A:styles
B:varieties
C:supplies
D:shops
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Europa's Watery UnderworldEuropa,one of Jupiter's 63 known moons,looks bright and icy on the surface.But appearances can be deceiving:Miles within its cracked,frigid shell,Europa probably hides giant pools of liquid water. Where scientists find liquid water,they hope to find life as well.Since we can't go diving into Europa's depths just yet,scientists instead have to investigate the moon's surface for clues to what lies beneath.In a new study,scientists investigated one group of strange ice patterns on Europa and concluded that the formations mark the top of an underground pool that holds as much water as the U.S.Great Lakes.Pictures of Europa,which is slightly smaller than Earth's moon,clearly show a tangled,icy mishmash of lines and cracks known as"chaos terrains".These chaotic places cover more than half of Europa. For more than 10 years,scientists have wondered what causes the formations.The new study suggests that they arise from the mixing of vast underground stores of liquid water with icy material near the surface.For scientists who suspect that Europa also may be hiding life beneath its icy surface,the news about the new lake is exciting."It would be great if these lakes harbored life,"Britney Schmidt,a planetary scientist who worked onthe study,told Science News."But even if they didn't,they say that Europa is doing something interesting and active right now."Schmidt,a scientist at the University of Texas at Austin,and her colleagues wanted to know how chaos terrains form.Since they couldn't rocket to Europa to see for themselves,they searched for similar forma- tions here on Earth.They studied collapsed ice shelves in Antarctica and icy caps on volcanoes in Iceland. Those features on Earth formed when liquid water mixed with ice.The scientists now suspect something similar might be happening on Europa:that as water and ice of different temperatures mingle and shift,the surface fractures.This would explain the jumbled ice sculptures."Fracturing catastrophically disrupts the ice in the same way that it causes ice shelves to collapse on Earth,"Schmidt told Science News.She and her team found that the process could be causing chaos terrains to form quickly on Europa.The new study suggests that on this moon,elements such as oxygen from the surface blend with the deep bodies of water. That mixture may create an environment that supports life.The strange ice patterns on Europa are formed as a result of a mixture of liquid water and solid material underground water pool.A:RightB:WrongC:Not mentioned
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Deep inside a mountain near Sweetwater in East Tennessee is a bady?of water known as the Lost?Sea.It is listed by the Guinness Book of World Records as the world′s largest underground lake.The Lost Sea is part of an extensive and historic cave system called Craighead Caverns.
The caverns have been known and used since the days of the Cherokee Indian nation.The cave?expands into a series of huge rooms from a small opening on the side of the mountain.Approximately?one mile from the entrance,in a room called-The Council Room",many Indian artifacts have been?found.Some of the items discovered include pottery,arrowheads,weapons,and jewelry.
For many years there were persistent rumors of a large underground lake somewhere in a cave,but it was not discovered until 1905.In that year,a thirteen-year-old boy named Ben Sands crawled through a small opening three hundred feet underground.:He found himself in a large cave half filled?with water.
Today tourists visit the Lost Sea and ride far out onto it in glass-bottomed boats powered by electric motors.More than thirteen acres of water have been mapped out so far and still no end to the lake has been found.Even though teams of divers have tried to explore the Lost Sea,the full extent
of it is still unknown.
What was found in"The Council Room"?A.A small natural opening.
B.A large cave.
C.Another series of rooms.
D.Many old Indian objects.
考题
Deep inside a mountain near Sweetwater in East Tennessee is a bady?of water known as the Lost?Sea.It is listed by the Guinness Book of World Records as the world′s largest underground lake.The Lost Sea is part of an extensive and historic cave system called Craighead Caverns.
The caverns have been known and used since the days of the Cherokee Indian nation.The cave?expands into a series of huge rooms from a small opening on the side of the mountain.Approximately?one mile from the entrance,in a room called-The Council Room",many Indian artifacts have been?found.Some of the items discovered include pottery,arrowheads,weapons,and jewelry.
For many years there were persistent rumors of a large underground lake somewhere in a cave,but it was not discovered until 1905.In that year,a thirteen-year-old boy named Ben Sands crawled through a small opening three hundred feet underground.:He found himself in a large cave half filled?with water.
Today tourists visit the Lost Sea and ride far out onto it in glass-bottomed boats powered by electric motors.More than thirteen acres of water have been mapped out so far and still no end to the lake has been found.Even though teams of divers have tried to explore the Lost Sea,the full extent
of it is still unknown.
It can be inferred from the passage that the Craighead Caverns presently serve as__________.A.an underground testing site
B.an Indian meeting ground
C.a tourist attraction
D.a motor boat race course
考题
Deep inside a mountain near Sweetwater in East Tennessee is a bady?of water known as the Lost?Sea.It is listed by the Guinness Book of World Records as the world′s largest underground lake.The Lost Sea is part of an extensive and historic cave system called Craighead Caverns.
The caverns have been known and used since the days of the Cherokee Indian nation.The cave?expands into a series of huge rooms from a small opening on the side of the mountain.Approximately?one mile from the entrance,in a room called-The Council Room",many Indian artifacts have been?found.Some of the items discovered include pottery,arrowheads,weapons,and jewelry.
For many years there were persistent rumors of a large underground lake somewhere in a cave,but it was not discovered until 1905.In that year,a thirteen-year-old boy named Ben Sands crawled through a small opening three hundred feet underground.:He found himself in a large cave half filled?with water.
Today tourists visit the Lost Sea and ride far out onto it in glass-bottomed boats powered by electric motors.More than thirteen acres of water have been mapped out so far and still no end to the lake has been found.Even though teams of divers have tried to explore the Lost Sea,the full extent
of it is still unknown.
The Lost Sea is unique because it is__________.A.part of a historical cave system
B.the biggest underground lake in the world
C.listed in the Guinness Book of World Records
D.the largest body of water in Tennessee
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Heating，ventilating，and air conditioning（HVAC） systems are______in most of underground subway stations to provide comfortable and fresh air to underground subway stations。A.assembled
B.installing
C.equipped
D.installed
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Such problem （）air, water, and noise pollutions are becoming more and more serious in some big cities.AlikeBasCofDabout
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问答题Directions： Please write an essay in about 150 words entitled “Water Shortage” based on the following outline. The first sentence has been given. Outline： （1）Water shortage has become much more serious than before. （2）The chief reasons for water shortage. （3）My suggestions.
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单选题The height of a VHF radio antenna is more important than the power output wattage of the radio because（）.A
VHF communications are basically line of sightB
the air is more dense the higher you goC
salt water is a poor conductor of soundD
sea water absorbs the radiated energy
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单选题Because of last night’s heavy rain, the ground cannot ______ any more water.A
absorbB
relieveC
withdrawD
suck
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单选题Because it is not a serious problem, we are not necessary to take strict measures against the student.A
we not needB
not necessary for usC
it being unnecessaryD
it is not necessary for us
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单选题As indicated in the passage, the water problem _____.A
has been exaggerated by some experts in the fieldB
is underestimated by government organizations at different levelsC
poses a challenge to the technology of building reservoirsD
is already serious in certain parts of the world
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单选题Such problem （）air, water, and noise pollutions are becoming more and more serious in some big cities.A
likeB
asC
ofD
about
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单选题It is implied in the passage that _____.A
people should not take street level transportationB
tiny iron particles will not cause health problemsC
air pollution on an underground train is less poisonousD
traveling on an underground train is better than taking the bus
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单选题A
Some are built underground.B
Some can be eaten.C
Most are sewed with grasses.D
Most are dried by the sun.
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