填空题In warm and mild regions, farmed fish and shellfish are also affected by POPs because they are fed fish meal.____
题目
填空题
In warm and mild regions, farmed fish and shellfish are also affected by POPs because they are fed fish meal.____
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第1题：
共用题干
Sharks Perform a Service for Earth's Waters
It is hard to get people to think of sharks as anything but a deadly enemy. They are thought to1people frequently. But these fish perform a2service for earth's waters and for human beings. Yet business and sport fishing are threatening their3.Some sharks are at risk of disappearing from4.
Warm weather may influence both fish and shark activity. Many fish swim near coastal areas5their warm waters. Experts say sharks may follow the fish into the same areas,6people also swim. In fact,most sharks do not purposely charge at or bite humans. They are thought to mistake a person7a sea animal,such as a seal or sea lion. That is why people should not swim in the ocean when the sun goes down or comes up.Those are the8 when sharks are looking for food. Experts also say that bright colors and shiny jewelry may cause sharks to attack.
A shark has an extremely good sense of smell. It can find small amounts of substances in wa-ter,such as blood,body liquids and9 produced by animals. These powerful10help sharks find their food. Sharks eat fish,any11sharks,and plants that live in the ocean.
Medical researchers want to learn more about the shark's body defense,and immune 12against disease. Researchers know that sharks13quickly from injuries. They study the shark in hopes of finding a way to fight human disease.
Sharks are important for the world's14.They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too15．This protects the plants and other forms of life that exist in the oceans.1._________
A: attack
B: meet
C: love
D: visit答案：A解析：本题应选择attack，因为第一句提到：人们认为鲨鱼是a deadly enemy，也就是说些鱼会对人类造成伤害。第二句是对deadly enemy的具体说明。其他的三个选项meet , love , visit 都不合适，love与上下文意思相反，meet和visit与上下文意思不符。所以答案为A。
空格2所在的句子由but连接，所以该句子表达的意思一定与第二句相反。第二句对置鱼的评价是负面的，填入空格2的词应该是正面的。四个选项中只有C项valua- ble符合这一条件，所以C项是答案。
第三句提到笠鱼有益于waters and human beings，第五句又提到鲨鱼濒临灭绝的危险。根据上下文的意思，threatening“威胁”到它们的应该是existence“生存”。其他的三个选项source , friends , fish都不合适，与上下文意思没有联系。所以答案为B。
如果置鱼消失，从什么地方消失呢？ 当然从earth“地球”上消失。从space “宇宙空间”、sky“天空”中消失，或从1and“ 陆地”上消失，都有悖常理。所以答案为D。
四个选项的意思都是“因为”，但是从用法上分析，because、 since和by rea- son that之后要接句子，because of之后接名词或名词短语。their warm waters是名词短语，所以要选用C项because of。
... people also swim明显是定语从句，其先行词是表示地点的名词area，所以要选关系副词where。所以答案为D。
从上下文判断，本句的意思是：置鱼将人错认为是海洋动物。而“将……错认为是”的英语表达是mistake...for，所以本题的答案是B项。
本段的意思是：置鱼并非故意袭击人类。人们认为，由于置鱼将人错认为是海狮等海洋动物，在饥俄时才袭击人类。日出和日落时，正是鳌鱼饥肠辘辘的时候，人们不应该出海游泳。空格8填入的词应该与时间有关，所以times是答案，而与地点有关的选项 places , seas , oceans与上下文意思脱节。所以答案为A。
本段第一、二句提到置鱼的嗅觉特别灵敏，能嗅到海水中存在的极为微量的气味。作者举了三个物质：血、体液和化学品。空格9要填入表示物质的名词。四个选项中唯一表达物质的词是chemicals“化学品”。所以C项chemicals是答案，而其他三个选项与学科有关，脱离了上下文的意思，不是本题的答案。
在第一、二句意思的基础上，作者进一步说明，灵敏的嗅觉有助于鲨鱼找到食物。所以本题的答案是D项senses，因为feelings , touches和tastes都与smells无关。
本句的中心词是复数的sharks , another所修饰的名词一般是单数，所以不会是答案。these和those是表特指的代词，指代前面出现过的名词。由于前面没有先行词，所以也不可能是答案。剩下的other是答案，any other sharks的说法也合乎英语的用法。所以答案为D。
从上下文判断，医学研究人员想要更多了解的是“身体抗病system（系统）”，不会是“身体抗病idea（思想）”、“身体杭病工作（work)”或“身体杭病circle（周期）”。所以答案为A。
本段最后一句意为：医学研究人员研究置鱼的目的是为了找到一种人类抗病的方法。所以空格13所在句子的意思应该是recover (quickly from injuries)。科学家想要探究的应该是有关受伤鲨鱼recover quickly from injuries的原因，而reform“改造”' return“回归”和rely“依靠”只是与答案recover词形上有点相似而已，其意思与上下文的意思风马牛不相及。所以答案为A。
从上下文判断，置鱼的存在能使oceans得益。置鱼不生活在rivers、 forests 或mountains中，所以这三个选项不合适。因此答案为B。
本段的其余三句都是说明为什么置鱼有益于海洋。它们吃海洋动物，结果使得海洋中的动物数量不会过多。weak、 little、 few都与上面表达的意思相反，所以只有D项 great是答案。 -
第2题：
共用题干
Sharks Perform a Service for Earth's Waters
It is hard to get people to think of sharks as anything but a deadly enemy.They are thought to ______(51)people frequently .But these fish perform a______(52)service for earth's waters and for human beings .Yet business and sport fishing are threatening their______(53).Some sharks are at______(54)of disappearing from earth.
Warm weather may influence both fish and shark activity.Many fish swim near coastal areas ______(55)their warm waters. Experts say sharks may follow the fish into the same areas, ______(56)people also swim.In fact,most sharks do not purposely charge at or bite humans.
They are thought to mistake a person______(57)a sea animal,such as a seal or sea lion.That is why people should not swim in the ocean when the sun goes down or comes up .Those are the ______(58)when sharks are looking for food.Experts also say that bright colors and shiny jewelry may cause sharks to attack.
A shark has an extremely good sense of smell.It can find small amounts of substances in water,such as blood,body liquids and______(59)produced by animals.These powerful ______(60)help sharks find their food.Sharks eat fish,any______(61)sharks,and plants that live in the ocean.
Medical researchers want to learn more about the shark's body defense and immune systems ______(62)disease.Researchers know that sharks______(63)quickly from injuries.They study the shark in hopes of finding a way to fight human disease.
Sharks are important for the world's______(64).They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too ______(65).This protects the plants and other forms of life that exist in the oceans.65._________
A:. weak
B: little
C: few
D: great答案：D解析：本空应选择attack，因为第一句说到：人们认为鲨鱼是a deadly enemy，也就是说鲨鱼会对人类造成伤害。第二句是对deadly enemy的具体说明。其他三个选项meet,love , visit都不合适，love与上下文意思相反，meet和visit与上下文意思不符。
空格所在的句子由but连接，所以该句表达的意思一定与第二句相反。第二句对鲨鱼的评价是负面的，填入空格的词应该是正面的。四个选项中只有Valuable符合这一条件，所以是答案。
第三句说到鲨鱼有益于“waters and human beings"，第五句又说到鲨鱼濒临灭绝的危险。根据上下文的意思，threatening（威胁）到它们的应该是existence（生存）。其他三个选项source , friends , fish都不合适，与上下文意思没有联系。
固定搭配。at risk意为“处于危险之中”。因此D项正确。
四个选项的意思都是“因为”，但是从用法上分析，because , since和by reason that之后要接句子，because of之后接名词或名词短语。their warm waters是名词短语，所以要选用because of。
“... people also swim”明显是定语从句，其先行词是表示地点的名词area,所以要选关系副词where。
从上下文判断，本句的意思是：鲨鱼将人错认为是海洋动物。而“将……错认为是” 的英语表达是mistake...for，所以本题的答案是选项B。
本段的意思是：鲨鱼并非故意袭击人类。人们认为，由于鲨鱼将人错认为是海狮等海洋动物，在饥饿时才袭击人类。日出和日落时，正是鲨鱼饥肠辘辘的时候，人们不应该出海游泳。空格填入的词应该与时间有关，所以times是答案，而与地点有关的选项( places , seas和oceans）与上下文意思脱节。
本段第一、二句是说，鲨鱼的嗅觉特别灵敏，能嗅到海水中存在的极为微量的气味。作者举了三个物质：血、体液和化学品。空格要填入表示物质的名词。四个选项中唯一表达物质的词是chemicals（化学品）。所以chemicals是答案，而其他三个选项与学科有关，脱离了上下文的意思，不是本题的答案。
在第一、二句意思的基础上，作者进一步说明，灵敏的嗅觉有助于鲨鱼找到食物。所以本题的答案是senses，因为feelings , touches和tastes都与smells无关。
本句的中心词是复数的sharks , another所修饰的名词一般是单数，所以不会是答案。these和those是表特指的代词，指代前面出现过的名词。由于前面没有先行词，所以也不可能是答案。剩下的other是答案，any other sharks的说法也合乎英语的用法。
本句是说，医学研究员们想了解更多鲨鱼对抗疾病的身体防御和免疫系统。对抗用against。因此A项正确。
本段最后一句的意思是：医学研究人员研究鲨鱼的目的是为了找到一种人类抗病的方法。所以，空格所在句子的意思应该是recover( quickly from injuries)。科学家想要探索的应该是有关受伤鲨鱼recover quickly from injuries的秘密，而reform（改造）、re-turn（回归）和rely（依靠）只是与答案recover在词形上有点相似而已，其意思与上下文的意思风马牛不相及。
从上下文判断，鲨鱼的存在能使oceans得益。鲨鱼不生活在river, forests或 mountains中，所以这三个选项不会是答案。
本段其余三句都是说明为什么鲨鱼有益于海洋。它们吃海洋动物，结果使得海洋中的动物数量不会过多。weak ,little ,few都与上面表达的意思相反，所以只有great是答案。 -
第3题：
Text 3 It is a good time to be a fisherman.The global fish-price index of the UN's Food and Agricultural Organization（FAO）hit a record high in May.Changing consumer diets,particularly in China,explain much of the sustained upward movement.High oil prices,which increase the cost of fishing and transportation,also add to the price of putting fish on Lhe table.Not all fish are creaLed equal,however.There are two types of fish production:"capture"（or wild）and"aquaculture"（or farmed）.And they seem to be on different tracks.Fish such as tuna,the majority of which is cau~;ht wild,saw much bigger price increases than salmon,which is easier to farm.Overall,the FAO's price index for wild fish nearly doubled between 1990 and 2012,whereas the one for farmed fish rose by only a fifth.What explains this big difference?The amount of wild fish captured globally has barely changed in the past two decades.The ceiling,of about 90m tonnes a year,seems to have been reached at the end of the 1980s.Overfishing is one reason,as is the limited room for produclivity growth,particularly if consumers want high quality.Patrice Guillotreau of the University of Nantes tells the story of a fleet in France that decided to trawl,rather than line-catch,its tuna.It braughi more back to shore,but the fish were damaged.It could not be sold as high-value fillets and was only good for canning.The old ways of catching fish are still best if you want the highest profits,says Mr CuiUotreau.In contrast,the farmed-fish industry continues to make productivity improvements.Fish farms have found crafty ways to use lower quantities of fish meal as feed.In the early days of aquaculture,it could take up to ten pounds of wild fish to produce one pound of salmon.Now the number is down to five.That may still be an inefficient use of protein,but the ratio is set to improve further.Fish farms have also become more energy-efficient,meaning that they are less affected by higher energy pnces.And they have learned how to handle diseases beUer,reducing the quanlity of fish that ends up being unsellable.As a resuli of all these improvements,the global production of farmed fish,measured in tonnes,now exceeds the producUon of beef.Output is likely to continue growing:the FAO estimates thal by 2020 it will reach six times its I990 level.
Tuna and salmon are mentioned to show that______A.salmon is not as expensive as tuna
B.tuna is more popular among consumers
C.wild fish is more precious than farmed fish
D.the prices of fish are in fact decided by FAO答案：C解析：例证题。根据tuna and salmon定位到第二段第四句。答案句来自下一句：Overall．the FAO's price index for wild fish nearly doubled between 1990 and 2012,whereas the one for farmed fish rose by only a fifth.文章举金枪鱼和三文鱼的例子，是为了说明野生鱼的价格涨幅大，而养殖鱼的价格相对涨幅小，即野生鱼比养殖鱼更珍贵，选项[C]wild fish is more precious than farmed fish“野生鱼比养殖鱼更珍贵”为答案。选项[A]salmon is not as expensive as tuna“三文鱼不如金枪鱼贵”“B]tuna is more popular among consumers“金枪鱼更受消费者欢迎”；这两项围绕salmon和tuna讨论，明显是表面选项，故可以排除。选项[D】the prices of fish are in fact decided by FAO“鱼类价格实际上由联合国粮食与农业组织决定”；该项表述纯属无中生有。综上，本题选择[C]。 -
第4题：
Text 3 It is a good time to be a fisherman.The global fish-price index of the UN's Food and Agricultural Organization（FAO）hit a record high in May.Changing consumer diets,particularly in China,explain much of the sustained upward movement.High oil prices,which increase the cost of fishing and transportation,also add to the price of putting fish on Lhe table.Not all fish are creaLed equal,however.There are two types of fish production:"capture"（or wild）and"aquaculture"（or farmed）.And they seem to be on different tracks.Fish such as tuna,the majority of which is cau~;ht wild,saw much bigger price increases than salmon,which is easier to farm.Overall,the FAO's price index for wild fish nearly doubled between 1990 and 2012,whereas the one for farmed fish rose by only a fifth.What explains this big difference?The amount of wild fish captured globally has barely changed in the past two decades.The ceiling,of about 90m tonnes a year,seems to have been reached at the end of the 1980s.Overfishing is one reason,as is the limited room for produclivity growth,particularly if consumers want high quality.Patrice Guillotreau of the University of Nantes tells the story of a fleet in France that decided to trawl,rather than line-catch,its tuna.It braughi more back to shore,but the fish were damaged.It could not be sold as high-value fillets and was only good for canning.The old ways of catching fish are still best if you want the highest profits,says Mr CuiUotreau.In contrast,the farmed-fish industry continues to make productivity improvements.Fish farms have found crafty ways to use lower quantities of fish meal as feed.In the early days of aquaculture,it could take up to ten pounds of wild fish to produce one pound of salmon.Now the number is down to five.That may still be an inefficient use of protein,but the ratio is set to improve further.Fish farms have also become more energy-efficient,meaning that they are less affected by higher energy pnces.And they have learned how to handle diseases beUer,reducing the quanlity of fish that ends up being unsellable.As a resuli of all these improvements,the global production of farmed fish,measured in tonnes,now exceeds the producUon of beef.Output is likely to continue growing:the FAO estimates thal by 2020 it will reach six times its I990 level.
The global fish price is growing because of_____A.the shonage of fishermen
B.ever-increasing oil prices
C.the change of Chinese diets
D.high market demand and cost答案：D解析：细节题。根据题干the global fish price定位到首段第二句，其中hit a record high=growing。答案句来自后两句，关键词分别是changing consumer diets“消费者饮食习惯改变”和high oil prices，which increase the cost of fishing and transportation“高昂的油价抬高了捕捞和运输成本”。总结起来就是两个原因使鱼价上涨：一是消费者饮食习惯改变，即市场需求高；二是成本高。选项[A]the shortage of fishennen“渔夫紧缺”；该项对应首句，与本题答案无关。[Bl ever-increasing oil prices“油价不断上涨”；对应最后一句，属于鱼价上涨的原因之一，但是片面不完整，故排除；[C]the change of Chinese diets“中国人饮食习惯的改变”；该项也属于原因之一，与[B]一样属于片面选项。[D]high market demand and cost“高市场需求和高成本”；该项符合答案要求，故本题选择[D]。 -
第5题：
The coastal area has very mild winter, but the central plains remain extremely cold.A. Warm B. severe C. hard D. dry答案：A解析： -
第6题：
鱼铲的英文是（）。
- A、Fish Knife
- B、Fish Slicer
- C、Fish Pan
- D、Fish dressing
正确答案:B -
第7题：
单选题Which of the following statements is true?ADeveloping fever is the privilege of warm-blooded animals, so sick lizards cannot run a fever.
BInvertebrates also have the ability to raise their temperature.
CThe internal temperatures of warm-blooded creatures are independent of the weather, so are the cold-blooded animals.
DSick lizards move into the sun to develop fever.
正确答案： A解析：
细节理解题。题目较简单。答案在第二段。 -
第8题：
单选题Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?（）AThey are both regions of lowest loss.
BThey are both regions of low reflections.
CThey are both regions of low index of refraction.
DThey are both regions of low chromatic dispersion.
EThey are both regions of low Polarization Mode Dispersion (PMD).
正确答案： E解析： 暂无解析 -
第9题：
填空题In warm and mild regions, farmed fish and shellfish are also affected by POPs because they are fed fish meal.____正确答案： G解析：
由题干中“farmed fish and shellfish”定位至G段。本段指出，在某些国家，养殖鱼或养殖贝壳等都是喂鱼粉饲料，因此它们也会受到污染。故匹配段落为G段。 -
第10题：
问答题With a link over the Channel, you could buy your fish and chips in England and be able to eat them in France while they were still warm!正确答案：解析： -
第11题：
共用题干
Sharks Perform a Service for Earth's Waters
It is hard to get people to think of sharks as anything but a deadly enemy. They are thought to1people frequently. But these fish perform a2service for earth's waters and for human beings. Yet business and sport fishing are threatening their3.Some sharks are at risk of disappearing from4.
Warm weather may influence both fish and shark activity. Many fish swim near coastal areas5their warm waters. Experts say sharks may follow the fish into the same areas,6people also swim. In fact,most sharks do not purposely charge at or bite humans. They are thought to mistake a person7a sea animal,such as a seal or sea lion. That is why people should not swim in the ocean when the sun goes down or comes up.Those are the8 when sharks are looking for food. Experts also say that bright colors and shiny jewelry may cause sharks to attack.
A shark has an extremely good sense of smell. It can find small amounts of substances in wa-ter,such as blood,body liquids and9 produced by animals. These powerful10help sharks find their food. Sharks eat fish,any11sharks,and plants that live in the ocean.
Medical researchers want to learn more about the shark's body defense,and immune 12against disease. Researchers know that sharks13quickly from injuries. They study the shark in hopes of finding a way to fight human disease.
Sharks are important for the world's14.They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too15．This protects the plants and other forms of life that exist in the oceans.3._________
A: source
B: existence
C: friends
D: fish答案：B解析：本题应选择attack，因为第一句提到：人们认为鲨鱼是a deadly enemy，也就是说些鱼会对人类造成伤害。第二句是对deadly enemy的具体说明。其他的三个选项meet , love , visit 都不合适，love与上下文意思相反，meet和visit与上下文意思不符。所以答案为A。
空格2所在的句子由but连接，所以该句子表达的意思一定与第二句相反。第二句对置鱼的评价是负面的，填入空格2的词应该是正面的。四个选项中只有C项valua- ble符合这一条件，所以C项是答案。
第三句提到笠鱼有益于waters and human beings，第五句又提到鲨鱼濒临灭绝的危险。根据上下文的意思，threatening“威胁”到它们的应该是existence“生存”。其他的三个选项source , friends , fish都不合适，与上下文意思没有联系。所以答案为B。
如果置鱼消失，从什么地方消失呢？ 当然从earth“地球”上消失。从space “宇宙空间”、sky“天空”中消失，或从1and“ 陆地”上消失，都有悖常理。所以答案为D。
四个选项的意思都是“因为”，但是从用法上分析，because、 since和by rea- son that之后要接句子，because of之后接名词或名词短语。their warm waters是名词短语，所以要选用C项because of。
... people also swim明显是定语从句，其先行词是表示地点的名词area，所以要选关系副词where。所以答案为D。
从上下文判断，本句的意思是：置鱼将人错认为是海洋动物。而“将……错认为是”的英语表达是mistake...for，所以本题的答案是B项。
本段的意思是：置鱼并非故意袭击人类。人们认为，由于置鱼将人错认为是海狮等海洋动物，在饥俄时才袭击人类。日出和日落时，正是鳌鱼饥肠辘辘的时候，人们不应该出海游泳。空格8填入的词应该与时间有关，所以times是答案，而与地点有关的选项 places , seas , oceans与上下文意思脱节。所以答案为A。
本段第一、二句提到置鱼的嗅觉特别灵敏，能嗅到海水中存在的极为微量的气味。作者举了三个物质：血、体液和化学品。空格9要填入表示物质的名词。四个选项中唯一表达物质的词是chemicals“化学品”。所以C项chemicals是答案，而其他三个选项与学科有关，脱离了上下文的意思，不是本题的答案。
在第一、二句意思的基础上，作者进一步说明，灵敏的嗅觉有助于鲨鱼找到食物。所以本题的答案是D项senses，因为feelings , touches和tastes都与smells无关。
本句的中心词是复数的sharks , another所修饰的名词一般是单数，所以不会是答案。these和those是表特指的代词，指代前面出现过的名词。由于前面没有先行词，所以也不可能是答案。剩下的other是答案，any other sharks的说法也合乎英语的用法。所以答案为D。
从上下文判断，医学研究人员想要更多了解的是“身体抗病system（系统）”，不会是“身体抗病idea（思想）”、“身体杭病工作（work)”或“身体杭病circle（周期）”。所以答案为A。
本段最后一句意为：医学研究人员研究置鱼的目的是为了找到一种人类抗病的方法。所以空格13所在句子的意思应该是recover (quickly from injuries)。科学家想要探究的应该是有关受伤鲨鱼recover quickly from injuries的原因，而reform“改造”' return“回归”和rely“依靠”只是与答案recover词形上有点相似而已，其意思与上下文的意思风马牛不相及。所以答案为A。
从上下文判断，置鱼的存在能使oceans得益。置鱼不生活在rivers、 forests 或mountains中，所以这三个选项不合适。因此答案为B。
本段的其余三句都是说明为什么置鱼有益于海洋。它们吃海洋动物，结果使得海洋中的动物数量不会过多。weak、 little、 few都与上面表达的意思相反，所以只有D项 great是答案。 -
第12题：
共用题干
Sharks Perform a Service for Earth's Waters
It is hard to get people to think of sharks as anything but a deadly enemy.They are thought to ______(51)people frequently .But these fish perform a______(52)service for earth's waters and for human beings .Yet business and sport fishing are threatening their______(53).Some sharks are at______(54)of disappearing from earth.
Warm weather may influence both fish and shark activity.Many fish swim near coastal areas ______(55)their warm waters. Experts say sharks may follow the fish into the same areas, ______(56)people also swim.In fact,most sharks do not purposely charge at or bite humans.
They are thought to mistake a person______(57)a sea animal,such as a seal or sea lion.That is why people should not swim in the ocean when the sun goes down or comes up .Those are the ______(58)when sharks are looking for food.Experts also say that bright colors and shiny jewelry may cause sharks to attack.
A shark has an extremely good sense of smell.It can find small amounts of substances in water,such as blood,body liquids and______(59)produced by animals.These powerful ______(60)help sharks find their food.Sharks eat fish,any______(61)sharks,and plants that live in the ocean.
Medical researchers want to learn more about the shark's body defense and immune systems ______(62)disease.Researchers know that sharks______(63)quickly from injuries.They study the shark in hopes of finding a way to fight human disease.
Sharks are important for the world's______(64).They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too ______(65).This protects the plants and other forms of life that exist in the oceans.53._________
A:. source
B: existence
C: friends
D: fish答案：B解析：本空应选择attack，因为第一句说到：人们认为鲨鱼是a deadly enemy，也就是说鲨鱼会对人类造成伤害。第二句是对deadly enemy的具体说明。其他三个选项meet,love , visit都不合适，love与上下文意思相反，meet和visit与上下文意思不符。
空格所在的句子由but连接，所以该句表达的意思一定与第二句相反。第二句对鲨鱼的评价是负面的，填入空格的词应该是正面的。四个选项中只有Valuable符合这一条件，所以是答案。
第三句说到鲨鱼有益于“waters and human beings"，第五句又说到鲨鱼濒临灭绝的危险。根据上下文的意思，threatening（威胁）到它们的应该是existence（生存）。其他三个选项source , friends , fish都不合适，与上下文意思没有联系。
固定搭配。at risk意为“处于危险之中”。因此D项正确。
四个选项的意思都是“因为”，但是从用法上分析，because , since和by reason that之后要接句子，because of之后接名词或名词短语。their warm waters是名词短语，所以要选用because of。
“... people also swim”明显是定语从句，其先行词是表示地点的名词area,所以要选关系副词where。
从上下文判断，本句的意思是：鲨鱼将人错认为是海洋动物。而“将……错认为是” 的英语表达是mistake...for，所以本题的答案是选项B。
本段的意思是：鲨鱼并非故意袭击人类。人们认为，由于鲨鱼将人错认为是海狮等海洋动物，在饥饿时才袭击人类。日出和日落时，正是鲨鱼饥肠辘辘的时候，人们不应该出海游泳。空格填入的词应该与时间有关，所以times是答案，而与地点有关的选项( places , seas和oceans）与上下文意思脱节。
本段第一、二句是说，鲨鱼的嗅觉特别灵敏，能嗅到海水中存在的极为微量的气味。作者举了三个物质：血、体液和化学品。空格要填入表示物质的名词。四个选项中唯一表达物质的词是chemicals（化学品）。所以chemicals是答案，而其他三个选项与学科有关，脱离了上下文的意思，不是本题的答案。
在第一、二句意思的基础上，作者进一步说明，灵敏的嗅觉有助于鲨鱼找到食物。所以本题的答案是senses，因为feelings , touches和tastes都与smells无关。
本句的中心词是复数的sharks , another所修饰的名词一般是单数，所以不会是答案。these和those是表特指的代词，指代前面出现过的名词。由于前面没有先行词，所以也不可能是答案。剩下的other是答案，any other sharks的说法也合乎英语的用法。
本句是说，医学研究员们想了解更多鲨鱼对抗疾病的身体防御和免疫系统。对抗用against。因此A项正确。
本段最后一句的意思是：医学研究人员研究鲨鱼的目的是为了找到一种人类抗病的方法。所以，空格所在句子的意思应该是recover( quickly from injuries)。科学家想要探索的应该是有关受伤鲨鱼recover quickly from injuries的秘密，而reform（改造）、re-turn（回归）和rely（依靠）只是与答案recover在词形上有点相似而已，其意思与上下文的意思风马牛不相及。
从上下文判断，鲨鱼的存在能使oceans得益。鲨鱼不生活在river, forests或 mountains中，所以这三个选项不会是答案。
本段其余三句都是说明为什么鲨鱼有益于海洋。它们吃海洋动物，结果使得海洋中的动物数量不会过多。weak ,little ,few都与上面表达的意思相反，所以只有great是答案。 -
第13题：
Text 3 It is a good time to be a fisherman.The global fish-price index of the UN's Food and Agricultural Organization（FAO）hit a record high in May.Changing consumer diets,particularly in China,explain much of the sustained upward movement.High oil prices,which increase the cost of fishing and transportation,also add to the price of putting fish on Lhe table.Not all fish are creaLed equal,however.There are two types of fish production:"capture"（or wild）and"aquaculture"（or farmed）.And they seem to be on different tracks.Fish such as tuna,the majority of which is cau~;ht wild,saw much bigger price increases than salmon,which is easier to farm.Overall,the FAO's price index for wild fish nearly doubled between 1990 and 2012,whereas the one for farmed fish rose by only a fifth.What explains this big difference?The amount of wild fish captured globally has barely changed in the past two decades.The ceiling,of about 90m tonnes a year,seems to have been reached at the end of the 1980s.Overfishing is one reason,as is the limited room for produclivity growth,particularly if consumers want high quality.Patrice Guillotreau of the University of Nantes tells the story of a fleet in France that decided to trawl,rather than line-catch,its tuna.It braughi more back to shore,but the fish were damaged.It could not be sold as high-value fillets and was only good for canning.The old ways of catching fish are still best if you want the highest profits,says Mr CuiUotreau.In contrast,the farmed-fish industry continues to make productivity improvements.Fish farms have found crafty ways to use lower quantities of fish meal as feed.In the early days of aquaculture,it could take up to ten pounds of wild fish to produce one pound of salmon.Now the number is down to five.That may still be an inefficient use of protein,but the ratio is set to improve further.Fish farms have also become more energy-efficient,meaning that they are less affected by higher energy pnces.And they have learned how to handle diseases beUer,reducing the quanlity of fish that ends up being unsellable.As a resuli of all these improvements,the global production of farmed fish,measured in tonnes,now exceeds the producUon of beef.Output is likely to continue growing:the FAO estimates thal by 2020 it will reach six times its I990 level.
The most suitable title for the text is_____A.Wild Fish:Demand Decides Price
B.The Rising Price of Rare Wild Fish
C.Ffumed Fish:Making Improvements
D.The Prices of Fishes:Rising Differently答案：D解析：主旨题。文章首段引出话题：全球鱼类价格上涨。第二段指出：并非所有鱼类都涨幅相同，并引出野生鱼和养殖鱼这两个种类．接下来几段分别讨论野生鱼和养殖鱼上涨幅度不同的原因。选项[A]Wild Fish：Demand Decides Price“野生鱼：需求决定价格”；该项突出讨论野生鱼．全文只有第三、四两段突出讨论野生鱼，该项属于片面选项，故排除。[B]The Rising Pnce of Rare Wild Fish“稀有野生鱼价格上涨”；该项同样突出野生鱼，与[A]-样为片面选项。[C]Farmed Fish：Making Improvements“养殖鱼：不断进步”；该项突出养殖鱼，而文章只有第五、六段重点讨论养殖鱼，该项同属于片面选项，故排除。[D]The Price of Fishes：Rising Differently“鱼类价格：上涨幅度不同”；该项符合文章主旨，尤其risinS differently强调了不同鱼类涨幅不同，故该项为答案。 -
第14题：
资料：There's a good chance that spicy crunchy tuna roll you ordered for lunch doesn't actually contain any tuna at all.
That's because 74% of fish sold at sushi venues in the US is mislabeled and often completely different than what's on the menu, according to a 2013 survey from the ocean conservation group Oceana.
But new technology could help make the seafood business a bit more transparent. Google is teaming up with Oceana and the aerial and satellite imaging nonprofit SkyTruth to launch Global Fishing Watch this fall, the New York Times reports. The initiative will track and analyze fishing boat practices using satellite technology and, ideally, help ensure that fewer fake or mislabeled fish are swapped in along the way.
Seafood providers are also investing in technology to reduce fraud. Boston seafood distributor Red's Best, for example, has increased transparency by selling fish with labels that buyers can scan with their smartphones to access a web page that provides details about the individual fish, including where the fish came from, the New York Times reports.
Even if a restaurant serves some real, correctly labeled fish, 95% of the 118 sushi restaurants surveyed by Oceana in cities including New York, Chicago, and Los Angeles had at least one faked sushi item on the menu.
Currently, the biggest culprits for fake sushi are snapper （92% misleadingly labeled） and tuna （71%）. White tuna is often swapped for escolar, which is sometimes called the "Ex-Lax Fish, " according to Inside Edition, because it can cause intestinal problems.
Roughly 75% of fish labeled snapper isn't even from the snapper family. Because of the predominance of fraud in the supply chain, New York sushi restaurant Sushi Nakazawa refuses to serve red snapper because the risk of fake fish is too high.
Why does the author mention Boston seafood distributor Red's Best?（ ）A.To emphasize the importance of seafood providers' responsibilities
B.To show that the problem of fake or mislabeled fish has already been solved
C.To introduce a new technology of scanning
D.To illustrate that seafood providers also take actions to reduce fraud.答案：D解析：本题考查的是细节理解。
【关键词】mention; Boston seafood distributor; Red's Best
【主题句】第4自然段Seafood providers are also investing in technology to reduce fraud.Boston seafood distributor Red's Best, for example, has increased transparency by selling fish with labels that buyers can scan with their smartphones to access a web page that provides details about the individual fish, including where the fish came from, the New York Times reports. 海鲜供应商也在投资技术以减少欺诈。根据纽约时报报道，例如，波士顿海鲜经销商Red's Best就通过销售带有标签的鱼来提高透明度，买家可以使用他们的智能手机进行扫描、访问提供有关各条鱼的详细信息的网页，包括鱼来自何处。
【解析】本题的问题是“为什么作者提到波士顿海鲜分销商瑞德最佳？”。 A选项“强调海鲜供应商责任的重要性”；B选项“表明假冒或错误标记的鱼的问题已经得到解决”；C选项“介绍一种新的扫描技术”；D选项“以说明海鲜供应商也采取行动减少欺诈”。根据主题句可知，作者提到波士顿海鲜分销商瑞德最佳是为了说明海鲜供应商也采取行动减少欺诈，故选D。 -
第15题：
Australia has several different climatic regions，from warm to( )and tropical.A.temperate
B.subtropical
C.humid
D.continental答案：B解析：考查澳大利亚气候。澳大利亚的气候，因其地域广阔，所以呈多样化。题目中已给出温带和热带，所以过渡的气候为亚热带，即B项subtropical(亚热带的)符合题意。A项temperate (温和的)，C项humid (潮湿的)和D项continental (大陆的)均不符合题意。 -
第16题：
Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?（）
- A、They are both regions of lowest loss.
- B、They are both regions of low reflections.
- C、They are both regions of low index of refraction.
- D、They are both regions of low chromatic dispersion.
- E、They are both regions of low Polarization Mode Dispersion (PMD).
正确答案:A -
第17题：
单选题Praise is like warm sunshine. It not only brings joy to ______ who are praised but also adds pleasure to ______ who praise.Athese; these
Bwe; us
Cthem; them
Dthose; those
正确答案： C解析：
those在此为代词，做主语，意思是“那些人”，后面的who引导了一个主语从句，修饰those。 -
第18题：
单选题Seamless mild steel is used for steam (also copper for moderate pressure and temperature), h-pair, feed discharge and all oil fuel pressure pipingsAccording to the above sentence, which of the following statements is not true?（）ABoth seamless mild steel and copper may be used for middle pressure steam
Bhpair means high pressure air
CThe feed piping of the boilers can be made of seamless mild steel
DAll oil pipings are made of mild steel
正确答案： C解析： 暂无解析 -
第19题：
单选题Praise is like warm sunshine. It not only brings joy to _____ who are praised but also adds pleasure to _____ who praise.Athese; these
Bwe; us
Cthem; them
Dthose; those
正确答案： A解析：
those在此为代词，做主语，意思是“那些人”，后面的who引导了一个主语从句，修饰those。 -
第20题：
单选题The gap in the ozone hole over the North Pole can expand each summer enough, that it exposes regions as far south as Sweden by heightened UV radiation, also increasing rates of skin cancer in the northern regions by as much as 50 percent.Athat it exposes regions as far south as Sweden by heightened UV radiation, also increasing
Bthat regions as far south as Sweden have been exposed to heightened UV radiation, as well as having increased
Cto expose regions as far south as Sweden to heightened UV radiation, increased
Dto expose regions as far south as Sweden to heightened UV radiation and increase
Ethat exposure to heightened UV radiation in regions as far south as Sweden, as well as increasing
正确答案： D解析：
A项中“exposed…by”搭配错误；B中从句的主语有误；C、E项中从句的结构错误，故本题选D项。