问答题Water is vital for our survival and for producing food. It takes about a thousand tons of water to produce one tone of grain that, fed to cows, produces only 18 pounds of meat. Today mankind is using about 160 billion tons more water each year than is
题目
问答题
Water is vital for our survival and for producing food. It takes about a thousand tons of water to produce one tone of grain that, fed to cows, produces only 18 pounds of meat. Today mankind is using about 160 billion tons more water each year than is being replenished by rain and fed back into water storages. If this water were carried in water trucks, it would require a 300, 000-mile-long convoy of trucks every day—a convoy length 37 times the diameter of the Earth. This is how much water we are using and not replenishing.
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更多“问答题Water is vital for our survival and for producing food. It takes about a thousand tons of water to produce one tone of grain that, fed to cows, produces only 18 pounds of meat. Today mankind is using about 160 billion tons more water each year than is ”相关问题
-
第1题：
Please supply 200 tons of fresh water ______ my ship．
A.with
B.in
C.to
D.on
正确答案：C
-
第2题：
共用题干
Some doctors think that you should drink a glass of water each morning. You should drink water before doing anything else.The temperature of the water should be similar to body temperature:not hot,not cold.Why should you drink this water?______(46).It helps clean out your kidneys.It prepares your stomach for digestion.______(47).After drinking water,the intestines can more easily take out nutrients from our food. And water helps us go to the bathroom more easily.
Scientists suggest that people take in 1,600 milliliters of water each day.______(48).If you do,your kidneys will have to work much harder to eliminate it. It's better to drink some in morning and some in afternoon.______(49).And during meals,they think water dilutes the juices produced in our stomachs.This can interfere with normal digestion.
Are you drinking enough water every day?Check the color of your urine.______(50).if your urine is very dark yellow,your probably need to drink more water. A little water each day could make you much healthier._________（47）
A:If it is light yellow,you are probably drinking enough
B:Water can also help your intestines work better
C:Some people think it's better to drink between meals
D:Water helps your body in many ways
E:But don't drink all of that water in one sitting
F: Water is an essential element of life答案：B解析：本题考查的是对上下文之间意义关系的理解和对文章细节的把握。空格上一句问：“为什么要喝水呢？”而空格的下一句具体说明了喝水对人体有各种益处。因此这里应该是概括提出喝水有益健康，D与上下文联系最好。
本题考查的是对上下文之间意义关系的理解和对文章细节的把握。空格的下一句是“饮水后，肠道能够更容易地从食物中吸取营养物质，也能让排泄更容易”，因此这里表述的应该是有关饮水与肠道的影响。
本题考查的是对上下文之间意义关系的理解和对文章细节的把握。上一句说到“科学家建议每人一天应喝1 600毫升的水”，而空格后内容是“否则你的肾脏在处理这些水的时候会比较困难”，因此选项E与前后内容最符合。
本题考查的是对上下文之间意义关系的理解和对文章细节的把握。空格后内容是“他们认为在吃饭的时候喝水会稀释胃液，可能干扰消化”。因此选项C与内容最符合。
本题考查的是对上下文之间意义关系的理解和对文章细节的把握。上一句说到“检查一下你尿液的颜色”，而空格后的内容是“如果是暗黄色，你可能需要多喝水”，因此选项A最合适。 -
第3题：
共用题干
The Drink Your Body Needs Most
I Our bodies are estimated to be about 60% to 70% water. Blood is mostly water,and
our muscles,lungs,and brain all contain a lot of water. Water is needed to regulate body
temperature and to provide the means for nutrients（滋养物）to travel to all our organs.
Water also transports oxygen to our cells,removes waste,and protects our joints and
organs.
2 We lose water through urination（排尿）,respiration（呼吸）,and by sweating. If you
are very active,you lose more water than if you do not take much exercise.Symptoms of
mild dehydration（脱水）include chronic pains in joints and muscles, lower back pain,
headaches, and constipation（便秘）.A strong smell to your urine, along with a yellow
color indicates that you are not getting enough water. Thirst is an obvious sign of
dehydration and in fact,you need water long before you feel thirsty.
3 A good rule of thumb（好的做法）is to take your bod犷weight in pounds and divide that
number in half. That gives you the number of ounces（盎司）of water per day that you
need.For example,if you weigh 160 pounds,you should drink at least 80 ounces of water
per day.If you exercise you should drink another 8-ounce glass of water for every 20
minutes you are active.If you drink coffee or alcohol,you should add at least an equal
amount of water. When you are traveling on an airplane,it is good to have 8 ounces of
water for every hour you are on board the plane.
4 It may be difficult to drink enough water on a busy day.Be sure you have water handy at
all times by keeping a bottle for water with you when you are working,traveling,or
exercising.If you get bored with plain water,add a bit of lemon for a touch of flavor.There
are some brands of flavored water available,but some of them have sugar or artificial
sweeteners that you don't need.Paragraph 4__________
A:Ounces of water needed per day
B:Importance of water
C:Composition of water
D:Signs of dehydration
E:Supply of water
F:Necessity for bringing a bottle for water with you答案：F解析： -
第4题：
共用题干
The Drink Your Body Needs Most
I Our bodies are estimated to be about 60% to 70% water. Blood is mostly water,and
our muscles,lungs,and brain all contain a lot of water. Water is needed to regulate body
temperature and to provide the means for nutrients（滋养物）to travel to all our organs.
Water also transports oxygen to our cells,removes waste,and protects our joints and
organs.
2 We lose water through urination（排尿）,respiration（呼吸）,and by sweating. If you
are very active,you lose more water than if you do not take much exercise.Symptoms of
mild dehydration（脱水）include chronic pains in joints and muscles, lower back pain,
headaches, and constipation（便秘）.A strong smell to your urine, along with a yellow
color indicates that you are not getting enough water. Thirst is an obvious sign of
dehydration and in fact,you need water long before you feel thirsty.
3 A good rule of thumb（好的做法）is to take your bod犷weight in pounds and divide that
number in half. That gives you the number of ounces（盎司）of water per day that you
need.For example,if you weigh 160 pounds,you should drink at least 80 ounces of water
per day.If you exercise you should drink another 8-ounce glass of water for every 20
minutes you are active.If you drink coffee or alcohol,you should add at least an equal
amount of water. When you are traveling on an airplane,it is good to have 8 ounces of
water for every hour you are on board the plane.
4 It may be difficult to drink enough water on a busy day.Be sure you have water handy at
all times by keeping a bottle for water with you when you are working,traveling,or
exercising.If you get bored with plain water,add a bit of lemon for a touch of flavor.There
are some brands of flavored water available,but some of them have sugar or artificial
sweeteners that you don't need.One cannot live________
A:in your body
B:without water
C:before long
D:for a change
E:on a busy day
F:to your weight答案：B解析： -
第5题：
共用题干
第一篇
Water Resources on the Earth
The second most important constituent（构成成分）of the biosphere（生物圈）is liquid water. This can only exist in a very narrow range of temperatures,since water freezes at 0℃and boils a 100℃．Life as we know it would only be possible on the surface of a planet which had temperature: somewhere within this narrow range.
The earth's supply of water probably remains fairly constant in quantity.The total quantity of water is not known very accurately,but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers.Most of it is in the form of the salt water of the oceans一about 97 percent. The rest is fresh.But three-quarters of this is in the form of ice at the poles and or mountains and cannot be used by living systems until melted.Of the remaining fraction,which h somewhat less than one percent of the whole.There is 10—20 times as much stored underground water as there is actually on the surface.There is also a tiny,but extremely important fraction of the water supply which is present as water vapour in the atmosphere.
Water vapour in the atmosphere is the channel through which the whole water circulation（循环） of the biosphere has to pass.Water evaporated（蒸发）from the surface of the oceans,from lakes and rivers and from moist（潮湿的）earth is added to it. From it the water comes out again as rain or snow,falling on either the sea or the land. There is,as might be expected, a more intensive evaporation per unit area over the sea and oceans than over the land,but there is more rainfall over the land than over the oceans and the balance is restored by the run off from the land in the form of rivers.Most of the fresh water on Earth________.
A:is in the form of ice at the poles and on mountains
B:is stored underground
C:is found in rivers and lakes
D:comes from the rain答案：A解析：文章第一段的第二句讲到液态水“only exist in a very narrow range of temperatures"，虽然B（我们星球的表面）也有点道理，但是液态水对温度的要求很高，并非地球的所有表面都有液态水存在，所以答案D正确。
第二段第一句提到地球上水的供给“remains fairly constant in quantity"，数量上是恒定的，它就没有增加也不会减少，只不过会以不同的形态出现，所以选择B（保持不变）。
问题是“地球上绝大部分淡水以什么形式出现？”第二段中间提到淡水时，说到“three-quarters of this is in the form of ice at the poles and on mountains"，即3/4的淡水以冰的形式存在于两极和高山中，后面提到剩余部分的淡水存在于地下，但占比少于1%,所以选项A正确。
词义辫析题， fraction有“小部分”的意思，考虑到前面提到地球97％的水以海洋咸水的形式存在，剩下的3％则以冰的形式存在于两极和高山，余下的自然不多，所以选B。
第三段的最后一句说到“there is more rainfall over the land than over the oceans”，陆地的降雨比海洋要多，但没有提到河流和山脉的降雨比较，所以C正确。大气中的水蒸气是整个生物圈的水循环必经的途径。水从海洋的表面、湖泊、河流和潮湿的泥土中蒸发出来并补充到大气中。水以雨或雪的形式再次出现，降落在海洋或陆地上。可以预料到的是，海洋上空每单位面积的水蒸气比在陆地上空更为密集，但是，陆地比海洋有更多的降雨，水在陆地上以河流的形式流出以保持水资源的平衡。 -
第6题：
共用题干
第一篇
Water Resources on the Earth
The second most important constituent（构成成分）of the biosphere（生物圈）is liquid water. This can only exist in a very narrow range of temperatures,since water freezes at 0℃and boils a 100℃．Life as we know it would only be possible on the surface of a planet which had temperature: somewhere within this narrow range.
The earth's supply of water probably remains fairly constant in quantity.The total quantity of water is not known very accurately,but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers.Most of it is in the form of the salt water of the oceans一about 97 percent. The rest is fresh.But three-quarters of this is in the form of ice at the poles and or mountains and cannot be used by living systems until melted.Of the remaining fraction,which h somewhat less than one percent of the whole.There is 10—20 times as much stored underground water as there is actually on the surface.There is also a tiny,but extremely important fraction of the water supply which is present as water vapour in the atmosphere.
Water vapour in the atmosphere is the channel through which the whole water circulation（循环） of the biosphere has to pass.Water evaporated（蒸发）from the surface of the oceans,from lakes and rivers and from moist（潮湿的）earth is added to it. From it the water comes out again as rain or snow,falling on either the sea or the land. There is,as might be expected, a more intensive evaporation per unit area over the sea and oceans than over the land,but there is more rainfall over the land than over the oceans and the balance is restored by the run off from the land in the form of rivers.There is more of rainfall________.
A:over the mountains than over the rivers
B:over the rivers than over the mountains
C:over the land than over the oceans
D:over the oceans than over the land答案：C解析：文章第一段的第二句讲到液态水“only exist in a very narrow range of temperatures"，虽然B（我们星球的表面）也有点道理，但是液态水对温度的要求很高，并非地球的所有表面都有液态水存在，所以答案D正确。
第二段第一句提到地球上水的供给“remains fairly constant in quantity"，数量上是恒定的，它就没有增加也不会减少，只不过会以不同的形态出现，所以选择B（保持不变）。
问题是“地球上绝大部分淡水以什么形式出现？”第二段中间提到淡水时，说到“three-quarters of this is in the form of ice at the poles and on mountains"，即3/4的淡水以冰的形式存在于两极和高山中，后面提到剩余部分的淡水存在于地下，但占比少于1%,所以选项A正确。
词义辫析题， fraction有“小部分”的意思，考虑到前面提到地球97％的水以海洋咸水的形式存在，剩下的3％则以冰的形式存在于两极和高山，余下的自然不多，所以选B。
第三段的最后一句说到“there is more rainfall over the land than over the oceans”，陆地的降雨比海洋要多，但没有提到河流和山脉的降雨比较，所以C正确。大气中的水蒸气是整个生物圈的水循环必经的途径。水从海洋的表面、湖泊、河流和潮湿的泥土中蒸发出来并补充到大气中。水以雨或雪的形式再次出现，降落在海洋或陆地上。可以预料到的是，海洋上空每单位面积的水蒸气比在陆地上空更为密集，但是，陆地比海洋有更多的降雨，水在陆地上以河流的形式流出以保持水资源的平衡。 -
第7题：
共用题干
The Drink Your Body Needs Most
1 Our bodies are estimated to be about 60% to 70% water.Blood is mostly water,and
our muscles,lungs,and brain all contain a lot of water.Water is needed to regulate body
temperature and to provide the means for nutrients（滋养物）to travel to all our organs.
Water also transports oxygen to our cells,removes waste,and protects our joints and
organs.
2 We lose water through urination（排尿）,respiration（呼吸）,and by sweating. If you
are very active,you lose more water than if you do not take much exercise.Symptoms of
mild dehydration（脱水）include chronic pains in joints and muscles , lower back pain,
headaches, and constipation（便秘）.A strong smell to your urine , along with a yellow
color indicates that you are not getting enough water.Thirst is an obvious sign of
dehydration and in fact,you need water long before you feel thirsty.
3 A good rule of thumb（好的做法）is to take your body weight in pounds and divide that
number in half. That gives you the number of ounces（盎司）of water per day that you
need.For example,if you weigh 160 pounds,you should drink at least 80 ounces of water
per day.If you exercise you should drink another 8-ounce glass of water for every 20 minutes you are active.If you drink coffee or alcohol,you should add at least an equal
amount of water.When you are traveling on an airpiane,it is good to have 8 ounces of
water for every hour you are on board the plane.
4 It may be difficult to drink enough water on a busy day.Be sure you have water handy at
all times by keeping a bottle for water with you when you are working,traveling,or
exercising.If you get bored with plain water,add a bit of lemon for a touch of flavor.There
are some brands of flavored water available,but some of them have sugar or artificial
sweeteners that you don't need.One cannot live_______.
A:in your body
B:without water
C:before long
D:for a change
E:on a busy day
F:to your weight答案：B解析： -
第8题：
共用题干
The Drink Your Body Needs Most
1. Our bodies are estimated to be about 60%to 70%water. Blood is mostly water, and our mus- dles,lungs and brain all contain a lot of water. Water is needed to regulate body temperature and to provide the means for nutrients（滋养物）to travel to all our organs. Water also transports oxy-gen to our cells,removes waste,and protects our joints and organs.
2. We lose water through urination（排尿）, respiration（呼吸）, and by sweating. If you are very active,you lose more water than if you do not take much exercise.Symptoms of mild dehydration （脱水）include chronic pains in joints and muscles,lower back pain,headaches,and constipation
（便秘）.A strong smell to your urine,along with a yellow color indicates that you are not getting enough water. Thirst is an obvious sign of dehydration and in fact,you need water long before you feel thirsty.
3 .A good rule of thumb（好的做法）is to take your body weight in pounds and divide that num- her in half. That gives you the number of ounces（盎司）of water per day that you need.For ex-ample,if you weigh 160 pounds,you should drink at least 80 ounces of water per day.If you ex- ercise you should drink another 8-ounce glass of water for every 20 minutes you are active.If you drink coffee or alcohol,you should add at least an equal amount of water. When you are traveling on an airplane,it is good to have 8 ounces of water for every hour you are on board the plane.
4 .It may be difficult to drink enough water on a busy day.Be sure you have water handy at all times by keeping a bottle for water with you when you are working,traveling,or exercising. If you get bored with plain water,add a bit of lemon for a touch of flavor. There are some brands of fla-vored water available,but some of them have sugar or artificial sweeteners that you don't need.One cannot live________.
A: in your body
B: without water
C: before long
D: for a change
E: on a busy day
F: to your weight答案：B解析：第一段讲到人体约60％～70％是由水组成的；血液大部分都是水，体温的调节，运输滋养物到各个器官，运送氧气到各个细胞，废物排除，人体关节和器官的保护等都离不开水。故本段主要讲的是水对人体的重要性。故选B。
第二段首句讲到我们通过排尿、呼吸和流汗流失水分。第三句开始主要讲的是脱水的表现。它包括关节与肌肉的慢性疼痛、腰痛、头痛、便秘、口渴等。故选D。
第三段首句讲的是人体每天所需的饮水量，即一个人每天所需的基本饮水量单位以盎司计，数量是体重磅数的一半。并介绍了在一些特殊情况下所需的饮水量。
第四段主要讲的是随身携带水瓶及时饮水的必要性。此段首句讲到在繁忙的一天中可能很难补充充足的水分，所以要确保你的手边一直有一瓶水，不管你是在工作、旅游，还是在锻炼，如果嫌水无味，可以加点柠檬。
由第一段“Our bodies are estimated to be about 60% to 70% water. Blood is mostly water”可知，人体约60%～ 70％是由水组成的，而且人体自身的新陈代谢和机体的运行都离不开水，因此人离开水是活不下去的，故选B。
由第二段“Symptoms of mild dehydration（脱水）include chronic pains in joints and muscles, lower back pain, headaches , and constipation（便秘）”可知，人体严重缺水便会产生脱水现象，并伴有关节和肌肉疼痛、背痛等症状。故选A。
由第三段“A good rule of thumb（好的做法）is to take your body weight in pounds and divide that number in half. That gives you the number of ounces（盎司）of water per day that you need.”可知，我们可以把体重用盎司表示出来，盎司的一半就是我们需要的基本饮水量，因此人体每天所需的饮水量与人的体重有密切关系，故选F。
由第四段“It may be difficult to drink enough water on a busy day. Be sure you have water handy at all times by keeping a bottle for water with you when you are working…”可知，在繁忙的一天中可能很难补充充足的水分，所以要确保你的手边一直有一瓶水，不管你是在工作、旅游，还是在锻炼，即使再忙也不要忘了喝水，故选E。 -
第9题：
单选题Please supply 200 tons of fresh water（）my ship.Awith
Bin
Cto
Don
正确答案： B解析： 暂无解析 -
第10题：
单选题Since 1960, the fast-growing town of Hotstone, Arizona, has drawn water from the Gray River, which feeds Lake Mudfish. If the town’s water use continues to grow at its present rate, in about 20 years the water level of Lake Mudfish will inevitably decrease to the point that it can no longer support its biologically fragile population of fish. The prediction above is based on which of the following assumptions?AAs the town’s water requirements grow, it will not be able to meet those requirements by drawing on water sources other than the Gray River.
BSince 1960, the lake’s population of fish has become more biologically fragile.
CThe amount of water that the lake loses to evaporation each year will increase over the next two decades.
DThere are multiple sources of water besides the Gray River that feed into Lake Mudfish.
EThe town of Hotstone will be able to reverse its trend of increasing water use if it implements an aggressive water conservation program.
正确答案： B解析：
由文段的内容可知，Mudfish湖之所以会干涸是因为Gray River的水都被用来提供给周边的Hotstone和Arizona，所以可知本题应选A项。 -
第11题：
单选题The designed capacity is 25 tons a day, but the fresh water generator can only （） 22 tons at present.Aconsume
Bdistill
Crun
Doperate
正确答案： D解析： 暂无解析 -
第12题：
问答题Water is vital for our survival and for producing food. It takes about a thousand tons of water to produce one tone of grain that, fed to cows, produces only 18 pounds of meat. Today mankind is using about 160 billion tons more water each year than is being replenished by rain and fed back into water storages. If this water were carried in water trucks, it would require a 300, 000-mile-long convoy of trucks every day—a convoy length 37 times the diameter of the Earth. This is how much water we are using and not replenishing.正确答案：
水是人类生存之所系,是食物生产之所需。生产一吨谷物需要耗费一千吨的水,而用一吨的谷物喂牛的话,只能为我们换取18磅的牛肉。如果将使用的水和下雨后蓄存的水相比较,那么人类可以说是入不敷出,每年大概多用了1600多亿吨水。如果用水车载水,那每天就得有一个30万英里长的车队,而这个车队的长度将是地球直径的37倍。这就是我们正在使用的水量,而不是正在获取的水量。解析： 暂无解析 -
第13题：
Which statement about damage control is TRUE ________．
A.A hole in the hull at the waterline is more dangerous than a hole below the inner bottom
B.The amount of water entering a ship through a hole varies inversely to the area of the hole
C.Water flowing into a lower compartment on a ship is more dangerous than water on deck or flowing into an upper compartment
D.Water flowing over the forecastle bulwark is more dangerous than a hole in the hull at the waterline
正确答案：A
-
第14题：
共用题干
The Drink Your Body Needs Most
I Our bodies are estimated to be about 60% to 70% water. Blood is mostly water,and
our muscles,lungs,and brain all contain a lot of water. Water is needed to regulate body
temperature and to provide the means for nutrients（滋养物）to travel to all our organs.
Water also transports oxygen to our cells,removes waste,and protects our joints and
organs.
2 We lose water through urination（排尿）,respiration（呼吸）,and by sweating. If you
are very active,you lose more water than if you do not take much exercise.Symptoms of
mild dehydration（脱水）include chronic pains in joints and muscles, lower back pain,
headaches, and constipation（便秘）.A strong smell to your urine, along with a yellow
color indicates that you are not getting enough water. Thirst is an obvious sign of
dehydration and in fact,you need water long before you feel thirsty.
3 A good rule of thumb（好的做法）is to take your bod犷weight in pounds and divide that
number in half. That gives you the number of ounces（盎司）of water per day that you
need.For example,if you weigh 160 pounds,you should drink at least 80 ounces of water
per day.If you exercise you should drink another 8-ounce glass of water for every 20
minutes you are active.If you drink coffee or alcohol,you should add at least an equal
amount of water. When you are traveling on an airplane,it is good to have 8 ounces of
water for every hour you are on board the plane.
4 It may be difficult to drink enough water on a busy day.Be sure you have water handy at
all times by keeping a bottle for water with you when you are working,traveling,or
exercising.If you get bored with plain water,add a bit of lemon for a touch of flavor.There
are some brands of flavored water available,but some of them have sugar or artificial
sweeteners that you don't need.The amount of water your body needs per day is closely related________.
A:in your body
B:without water
C:before long
D:for a change
E:on a busy day
F:to your weight答案：F解析： -
第15题：
共用题干
The Drink Your Body Needs Most
I Our bodies are estimated to be about 60% to 70% water. Blood is mostly water,and
our muscles,lungs,and brain all contain a lot of water. Water is needed to regulate body
temperature and to provide the means for nutrients（滋养物）to travel to all our organs.
Water also transports oxygen to our cells,removes waste,and protects our joints and
organs.
2 We lose water through urination（排尿）,respiration（呼吸）,and by sweating. If you
are very active,you lose more water than if you do not take much exercise.Symptoms of
mild dehydration（脱水）include chronic pains in joints and muscles, lower back pain,
headaches, and constipation（便秘）.A strong smell to your urine, along with a yellow
color indicates that you are not getting enough water. Thirst is an obvious sign of
dehydration and in fact,you need water long before you feel thirsty.
3 A good rule of thumb（好的做法）is to take your bod犷weight in pounds and divide that
number in half. That gives you the number of ounces（盎司）of water per day that you
need.For example,if you weigh 160 pounds,you should drink at least 80 ounces of water
per day.If you exercise you should drink another 8-ounce glass of water for every 20
minutes you are active.If you drink coffee or alcohol,you should add at least an equal
amount of water. When you are traveling on an airplane,it is good to have 8 ounces of
water for every hour you are on board the plane.
4 It may be difficult to drink enough water on a busy day.Be sure you have water handy at
all times by keeping a bottle for water with you when you are working,traveling,or
exercising.If you get bored with plain water,add a bit of lemon for a touch of flavor.There
are some brands of flavored water available,but some of them have sugar or artificial
sweeteners that you don't need.Dehydration may occur if there is a shortage of water_________.
A:in your body
B:without water
C:before long
D:for a change
E:on a busy day
F:to your weight答案：A解析： -
第16题：
共用题干
第一篇
Water Resources on the Earth
The second most important constituent（构成成分）of the biosphere（生物圈）is liquid water. This can only exist in a very narrow range of temperatures,since water freezes at 0℃and boils a 100℃．Life as we know it would only be possible on the surface of a planet which had temperature: somewhere within this narrow range.
The earth's supply of water probably remains fairly constant in quantity.The total quantity of water is not known very accurately,but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers.Most of it is in the form of the salt water of the oceans一about 97 percent. The rest is fresh.But three-quarters of this is in the form of ice at the poles and or mountains and cannot be used by living systems until melted.Of the remaining fraction,which h somewhat less than one percent of the whole.There is 10—20 times as much stored underground water as there is actually on the surface.There is also a tiny,but extremely important fraction of the water supply which is present as water vapour in the atmosphere.
Water vapour in the atmosphere is the channel through which the whole water circulation（循环） of the biosphere has to pass.Water evaporated（蒸发）from the surface of the oceans,from lakes and rivers and from moist（潮湿的）earth is added to it. From it the water comes out again as rain or snow,falling on either the sea or the land. There is,as might be expected, a more intensive evaporation per unit area over the sea and oceans than over the land,but there is more rainfall over the land than over the oceans and the balance is restored by the run off from the land in the form of rivers.The word"fraction"in the second paragraph means________.
A:a large area
B:a very small amount
C:an important system
D:a major source of information答案：B解析：文章第一段的第二句讲到液态水“only exist in a very narrow range of temperatures"，虽然B（我们星球的表面）也有点道理，但是液态水对温度的要求很高，并非地球的所有表面都有液态水存在，所以答案D正确。
第二段第一句提到地球上水的供给“remains fairly constant in quantity"，数量上是恒定的，它就没有增加也不会减少，只不过会以不同的形态出现，所以选择B（保持不变）。
问题是“地球上绝大部分淡水以什么形式出现？”第二段中间提到淡水时，说到“three-quarters of this is in the form of ice at the poles and on mountains"，即3/4的淡水以冰的形式存在于两极和高山中，后面提到剩余部分的淡水存在于地下，但占比少于1%,所以选项A正确。
词义辫析题， fraction有“小部分”的意思，考虑到前面提到地球97％的水以海洋咸水的形式存在，剩下的3％则以冰的形式存在于两极和高山，余下的自然不多，所以选B。
第三段的最后一句说到“there is more rainfall over the land than over the oceans”，陆地的降雨比海洋要多，但没有提到河流和山脉的降雨比较，所以C正确。大气中的水蒸气是整个生物圈的水循环必经的途径。水从海洋的表面、湖泊、河流和潮湿的泥土中蒸发出来并补充到大气中。水以雨或雪的形式再次出现，降落在海洋或陆地上。可以预料到的是，海洋上空每单位面积的水蒸气比在陆地上空更为密集，但是，陆地比海洋有更多的降雨，水在陆地上以河流的形式流出以保持水资源的平衡。 -
第17题：
共用题干
第一篇
Water Resources on the Earth
The second most important constituent（构成成分）of the biosphere（生物圈）is liquid water. This can only exist in a very narrow range of temperatures,since water freezes at 0℃and boils a 100℃．Life as we know it would only be possible on the surface of a planet which had temperature: somewhere within this narrow range.
The earth's supply of water probably remains fairly constant in quantity.The total quantity of water is not known very accurately,but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers.Most of it is in the form of the salt water of the oceans一about 97 percent. The rest is fresh.But three-quarters of this is in the form of ice at the poles and or mountains and cannot be used by living systems until melted.Of the remaining fraction,which h somewhat less than one percent of the whole.There is 10—20 times as much stored underground water as there is actually on the surface.There is also a tiny,but extremely important fraction of the water supply which is present as water vapour in the atmosphere.
Water vapour in the atmosphere is the channel through which the whole water circulation（循环） of the biosphere has to pass.Water evaporated（蒸发）from the surface of the oceans,from lakes and rivers and from moist（潮湿的）earth is added to it. From it the water comes out again as rain or snow,falling on either the sea or the land. There is,as might be expected, a more intensive evaporation per unit area over the sea and oceans than over the land,but there is more rainfall over the land than over the oceans and the balance is restored by the run off from the land in the form of rivers.Liquid water only exists________.
A: in the center of the earth
B:on the surface of our planet
C:in the coastal areas of the earth
D:in a very narrow range of temperatures答案：D解析：文章第一段的第二句讲到液态水“only exist in a very narrow range of temperatures"，虽然B（我们星球的表面）也有点道理，但是液态水对温度的要求很高，并非地球的所有表面都有液态水存在，所以答案D正确。
第二段第一句提到地球上水的供给“remains fairly constant in quantity"，数量上是恒定的，它就没有增加也不会减少，只不过会以不同的形态出现，所以选择B（保持不变）。
问题是“地球上绝大部分淡水以什么形式出现？”第二段中间提到淡水时，说到“three-quarters of this is in the form of ice at the poles and on mountains"，即3/4的淡水以冰的形式存在于两极和高山中，后面提到剩余部分的淡水存在于地下，但占比少于1%,所以选项A正确。
词义辫析题， fraction有“小部分”的意思，考虑到前面提到地球97％的水以海洋咸水的形式存在，剩下的3％则以冰的形式存在于两极和高山，余下的自然不多，所以选B。
第三段的最后一句说到“there is more rainfall over the land than over the oceans”，陆地的降雨比海洋要多，但没有提到河流和山脉的降雨比较，所以C正确。大气中的水蒸气是整个生物圈的水循环必经的途径。水从海洋的表面、湖泊、河流和潮湿的泥土中蒸发出来并补充到大气中。水以雨或雪的形式再次出现，降落在海洋或陆地上。可以预料到的是，海洋上空每单位面积的水蒸气比在陆地上空更为密集，但是，陆地比海洋有更多的降雨，水在陆地上以河流的形式流出以保持水资源的平衡。 -
第18题：
共用题干
The Drink Your Body Needs Most
1. Our bodies are estimated to be about 60%to 70%water. Blood is mostly water, and our mus- dles,lungs and brain all contain a lot of water. Water is needed to regulate body temperature and to provide the means for nutrients（滋养物）to travel to all our organs. Water also transports oxy-gen to our cells,removes waste,and protects our joints and organs.
2. We lose water through urination（排尿）, respiration（呼吸）, and by sweating. If you are very active,you lose more water than if you do not take much exercise.Symptoms of mild dehydration （脱水）include chronic pains in joints and muscles,lower back pain,headaches,and constipation
（便秘）.A strong smell to your urine,along with a yellow color indicates that you are not getting enough water. Thirst is an obvious sign of dehydration and in fact,you need water long before you feel thirsty.
3 .A good rule of thumb（好的做法）is to take your body weight in pounds and divide that num- her in half. That gives you the number of ounces（盎司）of water per day that you need.For ex-ample,if you weigh 160 pounds,you should drink at least 80 ounces of water per day.If you ex- ercise you should drink another 8-ounce glass of water for every 20 minutes you are active.If you drink coffee or alcohol,you should add at least an equal amount of water. When you are traveling on an airplane,it is good to have 8 ounces of water for every hour you are on board the plane.
4 .It may be difficult to drink enough water on a busy day.Be sure you have water handy at all times by keeping a bottle for water with you when you are working,traveling,or exercising. If you get bored with plain water,add a bit of lemon for a touch of flavor. There are some brands of fla-vored water available,but some of them have sugar or artificial sweeteners that you don't need.The amount of water your body needs per day is related_________.
A: in your body
B: without water
C: before long
D: for a change
E: on a busy day
F: to your weight答案：F解析：第一段讲到人体约60％～70％是由水组成的；血液大部分都是水，体温的调节，运输滋养物到各个器官，运送氧气到各个细胞，废物排除，人体关节和器官的保护等都离不开水。故本段主要讲的是水对人体的重要性。故选B。
第二段首句讲到我们通过排尿、呼吸和流汗流失水分。第三句开始主要讲的是脱水的表现。它包括关节与肌肉的慢性疼痛、腰痛、头痛、便秘、口渴等。故选D。
第三段首句讲的是人体每天所需的饮水量，即一个人每天所需的基本饮水量单位以盎司计，数量是体重磅数的一半。并介绍了在一些特殊情况下所需的饮水量。
第四段主要讲的是随身携带水瓶及时饮水的必要性。此段首句讲到在繁忙的一天中可能很难补充充足的水分，所以要确保你的手边一直有一瓶水，不管你是在工作、旅游，还是在锻炼，如果嫌水无味，可以加点柠檬。
由第一段“Our bodies are estimated to be about 60% to 70% water. Blood is mostly water”可知，人体约60%～ 70％是由水组成的，而且人体自身的新陈代谢和机体的运行都离不开水，因此人离开水是活不下去的，故选B。
由第二段“Symptoms of mild dehydration（脱水）include chronic pains in joints and muscles, lower back pain, headaches , and constipation（便秘）”可知，人体严重缺水便会产生脱水现象，并伴有关节和肌肉疼痛、背痛等症状。故选A。
由第三段“A good rule of thumb（好的做法）is to take your body weight in pounds and divide that number in half. That gives you the number of ounces（盎司）of water per day that you need.”可知，我们可以把体重用盎司表示出来，盎司的一半就是我们需要的基本饮水量，因此人体每天所需的饮水量与人的体重有密切关系，故选F。
由第四段“It may be difficult to drink enough water on a busy day. Be sure you have water handy at all times by keeping a bottle for water with you when you are working…”可知，在繁忙的一天中可能很难补充充足的水分，所以要确保你的手边一直有一瓶水，不管你是在工作、旅游，还是在锻炼，即使再忙也不要忘了喝水，故选E。 -
第19题：
共用题干
The Drink Your Body Needs Most
1. Our bodies are estimated to be about 60%to 70%water. Blood is mostly water, and our mus- dles,lungs and brain all contain a lot of water. Water is needed to regulate body temperature and to provide the means for nutrients（滋养物）to travel to all our organs. Water also transports oxy-gen to our cells,removes waste,and protects our joints and organs.
2. We lose water through urination（排尿）, respiration（呼吸）, and by sweating. If you are very active,you lose more water than if you do not take much exercise.Symptoms of mild dehydration （脱水）include chronic pains in joints and muscles,lower back pain,headaches,and constipation
（便秘）.A strong smell to your urine,along with a yellow color indicates that you are not getting enough water. Thirst is an obvious sign of dehydration and in fact,you need water long before you feel thirsty.
3 .A good rule of thumb（好的做法）is to take your body weight in pounds and divide that num- her in half. That gives you the number of ounces（盎司）of water per day that you need.For ex-ample,if you weigh 160 pounds,you should drink at least 80 ounces of water per day.If you ex- ercise you should drink another 8-ounce glass of water for every 20 minutes you are active.If you drink coffee or alcohol,you should add at least an equal amount of water. When you are traveling on an airplane,it is good to have 8 ounces of water for every hour you are on board the plane.
4 .It may be difficult to drink enough water on a busy day.Be sure you have water handy at all times by keeping a bottle for water with you when you are working,traveling,or exercising. If you get bored with plain water,add a bit of lemon for a touch of flavor. There are some brands of fla-vored water available,but some of them have sugar or artificial sweeteners that you don't need.Paragraph 1________
A: Ounces of water needed per day
B:.Importance of water
C: Composition of water
D: Signs of dehydration
E: Supply of water
F: Necessity for bringing a bottle for water答案：B解析：第一段讲到人体约60％～70％是由水组成的；血液大部分都是水，体温的调节，运输滋养物到各个器官，运送氧气到各个细胞，废物排除，人体关节和器官的保护等都离不开水。故本段主要讲的是水对人体的重要性。故选B。
第二段首句讲到我们通过排尿、呼吸和流汗流失水分。第三句开始主要讲的是脱水的表现。它包括关节与肌肉的慢性疼痛、腰痛、头痛、便秘、口渴等。故选D。
第三段首句讲的是人体每天所需的饮水量，即一个人每天所需的基本饮水量单位以盎司计，数量是体重磅数的一半。并介绍了在一些特殊情况下所需的饮水量。
第四段主要讲的是随身携带水瓶及时饮水的必要性。此段首句讲到在繁忙的一天中可能很难补充充足的水分，所以要确保你的手边一直有一瓶水，不管你是在工作、旅游，还是在锻炼，如果嫌水无味，可以加点柠檬。
由第一段“Our bodies are estimated to be about 60% to 70% water. Blood is mostly water”可知，人体约60%～ 70％是由水组成的，而且人体自身的新陈代谢和机体的运行都离不开水，因此人离开水是活不下去的，故选B。
由第二段“Symptoms of mild dehydration（脱水）include chronic pains in joints and muscles, lower back pain, headaches , and constipation（便秘）”可知，人体严重缺水便会产生脱水现象，并伴有关节和肌肉疼痛、背痛等症状。故选A。
由第三段“A good rule of thumb（好的做法）is to take your body weight in pounds and divide that number in half. That gives you the number of ounces（盎司）of water per day that you need.”可知，我们可以把体重用盎司表示出来，盎司的一半就是我们需要的基本饮水量，因此人体每天所需的饮水量与人的体重有密切关系，故选F。
由第四段“It may be difficult to drink enough water on a busy day. Be sure you have water handy at all times by keeping a bottle for water with you when you are working…”可知，在繁忙的一天中可能很难补充充足的水分，所以要确保你的手边一直有一瓶水，不管你是在工作、旅游，还是在锻炼，即使再忙也不要忘了喝水，故选E。 -
第20题：
问答题The second most important constituent of the biosphere is liquid water.This can only exist in a very narrow range of temperatures, since water freezesat 0℃ and boils at 100℃ This is only a tiny range compared with the low tem-peratures of some other planets and the hot interior of the earth, let the tem- 1．_______perature of the sun. As we know, life would only be possible on the face of a 2．_______planet had temperatures somewhere within this range. 3．_______ The earth’s supply of water probably remains quite fairly constant in 4．_______quantity. A certain number of hydrogen atoms, which are one of the mainconstituents of water, are lost by escaping from the atmosphere to out space, 5．_______but they are probably just about replaced by new water rising away from the 6．_______depths of the earth during volcanic action. The total quantity of water is notknown, and it is about enough to cover the surface of the globe to a depth of 7．_______about two and three-quarter kms. Most of it—97%—is in the form of the saltwaters of the oceans. The rest is fresh, but three quarter of this is in the form of 8．_______ice at the Poles and on mountains, and cannot be used by living systems when 9．_______melted. Of the remaining fraction, which is somewhat fewer than 1% of the 10．_______whole, there is 10-20 times as much stored as underground water as is actual-ly on the surface. There is also a minor, but extremely important, fraction ofthe water supply which is present as water vapour in the atmosphere.欢迎使用ueditor!正确答案：
1.在let后加alone let alone是固定短语,作“更不用说”讲。
2.将face改为surface on the surface of在…的表面上。face没有“表面”的意思。
3.在planet后加which/that;或将had改为having/with 此处为修饰先行词a planet的定语。
4.去掉fairly或quite fairly和quite是同义词,两个词都用会重复。
5.out改为outer “外层空间”用outer space。
6.去掉away rise from“从…中升起”。没有rise away这种词组。
7.and改为although 这里的两个分句是转折关系,不是并列关系。
8.quarter改为quarters quarter是可数名词,被three修饰,要用复数。
9.when改为unless/until/before 此句要表达“只有融化后这些冰才可以被利用”。用when句意为“融化后这些冰就不能被利用”。
10.fewer改为less fresh water是不可数名词,要用little及其变形来修饰。解析： 暂无解析 -
第21题：
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.正确答案：
Water shortage has become much more serious than before. According to the statistics. 2.2 billion people in 62 countries are facing the shortage of fresh water in the world; there is 300 million people in 26 countries are severely short of water. It is expected that other eight countries will join the 26 countries for severely lacking water in 2010 and 2.7 billion people around the world will face the problem of severe water short-age in 2025.
The chief reason for water shortage is the low efficiency of water using. As we can see, some water can be reused. For example, we can use the water that we have used to wash clothes, to rinse the toilet. As statistics show, one ton of water will be used while one ton of paper is produced. But with the use of recycled water, the consumption of water can be reduced to half ton. Obviously, with the use of recycled water, the water use efficiency will increase, thus a great lot of water can be saved. But unfortunately, in most of the countries, many companies, particularly in some industries that consume masses of water every day, such as paper making and steel making, haven’t built up their recycle system of water. Lots of water is directly drained without recycling everyday.
So how to build up more recycle system of water has become most pressing business that can solve the water shortage problem.解析：
这是一篇问题解决型作文。要严格按照提纲中的三个要点来安排作文的结构。第一段首句引用已给出的句子直入主题，下面可用事实支持主题，可用一些数字使事实更具说服力，也可引用现实生活中的实例引起人们的共鸣；第二段具体分析产生水资源缺乏的原因；第三段针对以上原因提出解决问题的办法。
【闪光词汇】
reuse v. 重新使用，再利用
rinse v. 冲洗，冲掉
drain v. 排水；流干 -
第22题：
单选题Permission is requested to pump out about 200 tons of clean sea ballast water for （） purposes．Asafe manning
Btrimming
Cavoiding collision
Dpreventing pollution
正确答案： B解析： 暂无解析 -
第23题：
单选题The designed （） is 20 tons per day, but the fresh water generator can only distil 15 tons at present.Adisplacement
Bweight
Cpower
Dcapacity
正确答案： D解析： 暂无解析 -
第24题：
单选题Permission is kindly （） about 1000 tons of clean sea water ballast，as and when required for trimming purposes．Arequested to pump out
Brequested pumping out
Crequesting to pump out
Drequesting pumping out
正确答案： D解析： 暂无解析