题目内容
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Why do sharks normally swim between ten and twenty miles off the coast of Britain？
A．They prefer warm water to cold water.
B．They see best in deep water.
C．They are afraid of man.
D．That is where their food is.
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听力原文：Man: I love deep-sea diving. I go at least once every summer. The deeper you go,the quieter everything becomes, until finally all you can hear is the sound of your own heartbeat. It's my way of getting away from it all, finding some peace for once. I spent my honeymoon diving, although my wife's not so keen, and it's not something we always do together. I don't need company necessarily, and I'm not looking for some incredible adventure. I did, however', once join some guys in a cage off Florida, searching for the great white shark. If sharks stop moving, they die. That sounds like me back home.
You hear a man talking about deep-sea diving. Why does he like the sport？
A．It suits his sociable nature.
B．It contrasts with his normal lifestyle.
C．It fulfils his need for a challenge in life.
根据以下材料，回答题
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 risk of disappearing from 54______
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 smell4. 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 62______ against 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.
回答（51）题 查看材料
A.attack
B.meet
C.love
D.visit
根据材料，回答题。
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.
回答（51）题 查看材料
A.attack
B.meet
C.love
D.visit
下面的短文有15处空白，请根据短文内容为每处空白确定一个最佳选项。
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. Although these fish perform. a valuable (52) for earth's waters and for human beings, business and sport fishing are threatening their (53) . As a result, some sharks are at risk of disappearing from Earth.
Warm weather may influence both fish and shark (54) . Many fish swim near coastal areas because of their (55) 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 (海豹) or sea lion. That is why people should not swim in the ocean when the sun goes down or comes up, because those are the times when sharks are looking for (58) . Experts also say that bright colors and shiny jewelry (珠宝) may cause sharks to attack.
A shark has an extremely 'good sense of (59) , with which it can find small amounts of substances in water, such as blood, body liquids and chemicals (60) by animals. These powerful senses 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 (免疫的) (62) against 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 oceans, as they eat injured and diseased fish. Their (64) 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.
51 A meet B attack C recognize D visit
A) They find the need for primary care declining.
B) The current system works against primary care.
C) Primary care physicians command less respect.
D) They think working in emergency rooms tedious.
Why sharks are useful for humans.*
A．Their tasty meat.
B．The principle of their defense system against disease.
C．Their solid skin.
D．The principle of their birth modes.
A．They have about the same lifestyle. as everyone else in the country.
B．They prefer not to admit that there are class distinctions in the United States.
C．They don't really know how to define their status because it is unclear.
D．They identify themselves with the majority who have normal lifestyles.
What is mainly described in Paragraph 2？
A．How and why sharks "hit and run".
B．How people can predict the attack.
C．How traditional prey is captured.
D．Why the human is a foreign object.
听力原文：M: Our plane has been circling for a long time. Why is there a delay？
W: The airport was closed for a while this morning and things aren't back to normal yet. Don't worry about it.
Q: What do we learn from the conversation？
(18)
A．The flight is taking its regular route.
B．The airport is closed due to bad weather.
C．The closure affected the airport's schedule.
D．The plane will fly back to its point of departure.
Why may the bull sharks attack people frequently？
A．Because human being is their favorite food.
B．Because they may wildly attack anything in the area.
C．Because they swims in shallow waters where people swim.
D．Because they are very aggressive sharks.
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