Sharks have lived in the world's oceans for millions of years. A shark has an extremely good sense of smell. It can find small amounts of substances in the water, such as blood, body liquids and chemicals produced by animals. These powerful senses help them find their food. ________1.________
Sharks grow slowly. About forty percent of the different kinds of sharks lay eggs. ________2.________ Some sharks carry their young inside their bodies as humans do. Some sharks are not able to reproduce until they are twenty years old. Most reproduce only every two years. And they give birth to fewer than ten young sharks. For this reason, over-fishing of sharks is of special danger to the future of the animal.
________3.________.They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in the ocean do not become too great. This protects the plants and other forms of life that exist in the oceans.
People hunt sharks for sport, food, medicine and their skin. Experts say the international market for some kinds of sharks has increased greatly because many parts of a shark are valuable. 4. . Shark liver oil is a popular source of Vitamin. The skin of a shark can be used like leather. In Asia, people enjoy a kind of soup made from shark fins. Experts say a fisherman can earn a lot of money for even one kilogram of shark fins.
Sharks are among the oldest animals on Earth. ________5.________ If too many sharks in one area are killed, the group of shark may never return to normal population levels
A. The others give birth to live young.
B. Sharks are important for the health of the world's oceans.
C. This is a threat to other form of life in the ocean.
D. Collectors pay thousands of dollars for the jaws of a shark.
E. Sharks are valuable to us and we can make full use of them.
F. But some sharks are in danger of disappearing from Earth.
G. Sharks eat fish, other sharks, and plants that live in the ocean
高三英语其他题中等难度题
Sharks have lived in the world's oceans for millions of years. A shark has an extremely good sense of smell. It can find small amounts of substances in the water, such as blood, body liquids and chemicals produced by animals. These powerful senses help them find their food. ________1.________
Sharks grow slowly. About forty percent of the different kinds of sharks lay eggs. ________2.________ Some sharks carry their young inside their bodies as humans do. Some sharks are not able to reproduce until they are twenty years old. Most reproduce only every two years. And they give birth to fewer than ten young sharks. For this reason, over-fishing of sharks is of special danger to the future of the animal.
________3.________.They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in the ocean do not become too great. This protects the plants and other forms of life that exist in the oceans.
People hunt sharks for sport, food, medicine and their skin. Experts say the international market for some kinds of sharks has increased greatly because many parts of a shark are valuable. 4. . Shark liver oil is a popular source of Vitamin. The skin of a shark can be used like leather. In Asia, people enjoy a kind of soup made from shark fins. Experts say a fisherman can earn a lot of money for even one kilogram of shark fins.
Sharks are among the oldest animals on Earth. ________5.________ If too many sharks in one area are killed, the group of shark may never return to normal population levels
A. The others give birth to live young.
B. Sharks are important for the health of the world's oceans.
C. This is a threat to other form of life in the ocean.
D. Collectors pay thousands of dollars for the jaws of a shark.
E. Sharks are valuable to us and we can make full use of them.
F. But some sharks are in danger of disappearing from Earth.
G. Sharks eat fish, other sharks, and plants that live in the ocean
高三英语其他题中等难度题查看答案及解析
Sharks have lived in the oceans for over 450 million years, long before dinosaurs appeared. There are now about 360 of sharks, whose size, behavior, and other characteristics differ widely.
Every year, we catch and kill over 100 million sharks, for food and for their fins. Dried shark fins are used to make shark fin soup, which sells for as much as $50 a bowl in fine Hong Kong . Other sharks are killed for sport and out of fear. Sharks are vulnerable(脆弱的) to overfishing because it most species 10 to 15 years to begin reproducing and they produce only a few offspring.
by movies and popular novels, most people see sharks as people-eating monsters. This is far from the . Every year, a few types of shark injure about 100 people worldwide and kill about 25. Most are by great white sharks, which often feed on sea lions and other marine mammals. They sometimes mistake human swimmers for their normal prey, if they are wearing black wet suits.
If you are a typical ocean-goer, your of being killed by an unprovoked （无缘无故的）attack by a shark are about 1 in 100 million. You are more to be killed by a pig than a shark and thousands of times more likely to get killed when you drive a car.
Sharks help human lives. In addition to providing people with food, they are helping us learn how to cancer, bacteria, and viruses. Sharks are very healthy and have aging processes similar to ours. Their highly effective immune system wounds to heal quickly without becoming infected, and their blood is being studied in connection with AIDS research.
Sharks are among the few animals in the world that almost get cancer and eye cataracts. Understanding why can help us improve human . Chemicals extracted from shark cartilage have killed cancerous tumors in laboratory animals.
1.A. species B. classes C. groups D. names
2.A. greatly B. popularly C. widely D. mostly
3.A. supermarkets B. restaurants C. offices D. companies
4.A. spends B. takes C. costs D. uses
5.A. Impressed B. Moved C. Changed D. Influenced
6.A. story B. truth C. movie D. problem
7.A. injuries B. deaths C. attacks D. causes
8.A. specially B. especially C. mainly D. usually
9.A. chances B. fears C. lives D. percentages
10.A. likely B. frequent C. possible D. lucky
11.A. avoid B. save C. keep D. prevent
12.A. damage B. destroy C. fight D. ruin
13.A. advises B. allows C. forces D. forbids
14.A. never B. seldom C. often D. usually
15.A. analysis B. research C. study D. health
高三英语完形填空简单题查看答案及解析
In summer, millions of people will head for the beach．And while the ocean can be a great place to swim and play, it may also be useful in another way. Some scientists think that waves could help make electricity．
“Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave? Or have you jumped in the water and felt the energy as waves crashed over you?” asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh in Scotland．“There is certainly a lot of energy in waves．”
Scientists are working on using that energy to make electricity．Most waves are created when winds blow across the ocean．“The winds start out by making little ripples (波纹) in the water, but if they keep on blowing , those ripples get bigger and bigger and turn into waves, ” Taylor said．“Waves are one of nature’s ways of picking up energy and then sending it off on a journey．”
When waves come towards the shore, people can set up dams or other barricades to block the water and send it through a large wheel called a turbine (涡轮) ．The turbine can then power an electrical generator (发电机) ．
The United States and a few other countries have started doing research on wave energy , and it is already being used in Scotland．
The resource is huge．We will never run out of wave power, besides, wave energy does not create the same pollution as other energy sources, such as oil and coal．
Oceans cover three quarters of the earth’s surface．That would make wave power seem perfect for creating energy around the world．There are some drawbacks, however．
Jamie Taylor said that wave power still cost too much money．He said that its effects on animals in the sea were still unknown．Plus, wave power would get in the way of fishing and boat traffic．
With more research, however, “many of these problems might be overcome,” Taylor said．“Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is growing quickly throughout the world．Finding more energy sources is very important, for traditional sources of energy like oil and gas may run out some day．”
In the future, when you turn on a light switch, an ocean wave could be providing the electricity!
1.Which of the following is NOT true?
A．Wave power costs too much money．
B．Wave energy creates the same amount of pollution as other energy sources．
C．Wave power affects fishing and boat traffic．
D．Wave power may affect marine animals．
2.We can infer from the passage that ______．
A．finding new energy sources like wave energy is important
B．wave energy is a resource that will never run out and is used all over the world
C．wave power is perfect for creating energy around the world
D．wave power doesn’t create any pollution
3.The underlined word “drawbacks” in the seventh paragraph probably means______．
A．regrets B．adventures
C．disadvantages D．difficulties
4.What can be the best title for the passage?
A．How to Get Electricity by Waves．
B．A Huge Resource of Energy．
C．Can Waves Make Electricity?
D．The Disadvantages of Wave Energy．
高三英语阅读理解中等难度题查看答案及解析
In summer, millions of people will head for the beach. And while the ocean can be a great place to swim and play, it may also be useful in another way. Some scientists think that waves could help make electricity.
“Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave? Or have you jumped in the water and felt the energy as waves crashed over you?” asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh in Scotland．“There is certainly a lot of energy in waves．”
Scientists are working on using that energy to make electricity．
Most waves are created when winds blow across the ocean．“The winds start out by making little ripples (波纹) in the water, but if they keep on blowing , those ripples get bigger and bigger and turn into waves, ”Taylor said．“Waves are one of nature’s ways of picking up energy and then sending it off on a journey．”
When waves come towards the shore, people can set up dams or other barricades to block the water and send it through a large wheel called a turbine (涡轮) ．The turbine can then power an electrical generator (发电机) ．
The United States and a few other countries have started doing research on wave energy , and it is already being used in Scotland．
The resource is huge．We will never run out of wave power, besides, wave energy does not create the same pollution as other energy sources, such as oil and coal．
Oceans cover three quarters of the earth’s surface．That would make wave power seem perfect for creating energy around the world．There are some drawbacks, however．
Jamie Taylor said that wave power still cost too much money．He said that its effects on animals in the sea were still unknown．Plus, wave power would get in the way of fishing and boat traffic．
With more research, however, “many of these problems might be overcome,” Taylor said．“Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is growing quickly throughout the world．Finding more energy sources is very important, for traditional sources of energy like oil and gas may run out some day．”
In the future, when you turn on a light switch, an ocean wave could be providing the electricity!
68．Which of the following is NOT true?
A．Wave power costs too much money．
B．Wave energy creates the same amount of pollution as other energy sources．
C．Wave power affects fishing and boat traffic．
D．Wave power may affect marine animals．
69．We can infer from the passage that ______．
A．finding more new energy sources is not necessary because of wave energy
B．wave energy is a resource that will never run out and is used all over the world
C．wave power is perfect for creating energy around the world
D．wave power doesn’t create any pollution
70．The underlined word “drawbacks” probably means ______．
A．regrets B．adventures C．disadvantages D．difficulties
71．What can be the best title for the passage?
A．How to Get Electricity by Waves． B．The Advantages of Wave Energy.
C．Can Waves Make Electricity? D．The Disadvantages of Wave Energy．
高三英语阅读理解简单题查看答案及解析
In summer, millions of people will head for the beach．And while the ocean can be a great place to swim and play, it may also be useful in another way．Some scientists think that waves could help make electricity．
“Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave? Or have you jumped in the water and felt the energy as waves crashed over you?” asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh in Scotland．“There is certainly a lot of energy in waves．”
Scientists are working on using that energy to make electricity．
Most waves are created when winds blow across the ocean．“The winds start out by making little ripples （波纹） in the water, but if they keep on blowing , those ripples get bigger and bigger and turn into waves, ”Taylor said．“Waves are one of nature’s ways of picking up energy and then sending it off on a journey．”
When waves come towards the shore, people can set up dams or other barricades to block the water and send it through a large wheel called a turbine （涡轮） ．The turbine can then power an electrical generator （发电机） ．
The United States and a few other countries have started doing research on wave energy , and it is already being used in Scotland．
The resource is huge．We will never run out of wave power, besides, wave energy does not create the same pollution as other energy sources, such as oil and coal．
Oceans cover three quarters of the earth’s surface．That would make wave power seem perfect for creating energy around the world．There are some drawbacks, however．
Jamie Taylor said that wave power still cost too much money．He said that its effects on animals in the sea were still unknown．Plus, wave power would get in the way of fishing and boat traffic．
With more research, however, “many of these problems might be overcome,” Taylor said．“Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is growing quickly throughout the world．Finding more energy sources is very important, for traditional sources of energy like oil and gas may run out some day．”
In the future, when you turn on a light switch, an ocean wave could be providing the electricity!
1.Which of the following is NOT true?
A．Wave power doesn’t cost too much money．
B．Wave energy is so clean that it doesn’t create the same amount of pollution as other energy sources．
C．Wave power affects fishing and boat traffic．
D．Wave power may affect marine animals．
2.We can infer from the passage that ______．
A．finding more new energy sources is not necessary because of wave energy
B．wave energy is a resource that will never run out and is used all over the world
C．wave power is not quite perfect for creating energy around the world
D．wave power doesn’t create any pollution
3.The underlined word “drawbacks” probably means ______．
A．regrets B．adventures C．disadvantages D．difficulties
4.What can be the best title for the passage?
A．How to Get Electricity by Waves
B．The advantages of Wave Energy
C．Can Waves Make Electricity?
D．The Disadvantages of Wave Energy
高三英语阅读理解简单题查看答案及解析
In summer, millions of people will head for the beach. And while the ocean can be a great place to swim and play, it may also be useful in another way. Some scientists think that waves could help make electricity.
“Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave? Or have you jumped in the water and felt the energy as waves crashed over you?” asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh in Scotland．“There is certainly a lot of energy in waves．”
Scientists are working on using that energy to make electricity．
Most waves are created when winds blow across the ocean．“The winds start out by making little ripples (波纹) in the water, but if they keep on blowing , those ripples get bigger and bigger and turn into waves, ”Taylor said．“Waves are one of nature’s ways of picking up energy and then sending it off on a journey．”
When waves come towards the shore, people can set up dams or other barricades to block the water and send it through a large wheel called a turbine (涡轮) ．The turbine can then power an electrical generator (发电机) ．
The United States and a few other countries have started doing research on wave energy , and it is already being used in Scotland．
The resource is huge．We will never run out of wave power, besides, wave energy does not create the same pollution as other energy sources, such as oil and coal．
Oceans cover three quarters of the earth’s surface．That would make wave power seem perfect for creating energy around the world．There are some drawbacks, however．
Jamie Taylor said that wave power still cost too much money．He said that its effects on animals in the sea were still unknown．Plus, wave power would get in the way of fishing and boat traffic．
With more research, however, “many of these problems might be overcome,” Taylor said．“Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is growing quickly throughout the world．Finding more energy sources is very important, for traditional sources of energy like oil and gas may run out some day．”
In the future, when you turn on a light switch, an ocean wave could be providing the electricity!
1.Which of the following is NOT true?
A．Wave power costs too much money．
B．Wave energy creates the same amount of pollution as other energy sources．
C．Wave power affects fishing and boat traffic．
D．Wave power may affect marine animals．
2.We can infer from the passage that ______．
A．finding more new energy sources is not necessary because of wave energy
B．wave energy is a resource that will never run out and is used all over the world
C．wave power is perfect for creating energy around the world
D．wave power doesn’t create any pollution
3.The underlined word “drawbacks” probably means ______．
A．regrets B．adventures C．disadvantages D．difficulties
4.What can be the best title for the passage?
A．How to Get Electricity by Waves． B．The Advantages of Wave Energy.
C．Can Waves Make Electricity? D．The Disadvantages of Wave Energy．
高三英语阅读理解中等难度题查看答案及解析
阅读理解。
Scientists around the world have been studying the warming of waters in the Pacific Ocean known as El Nino. The appearance of El Nino is known to affect the weather around the world. Scientists still do not completely understand it. Yet they now find they can use it to tell about the future in different areas of the world.
One example is the work of two scientists at Columbia University in New York, Mark Cane and Gordon Eshel. A scientist of Zimbabwe（津巴布韦）, Roger Buckland worked with them. They have found that when El Nino appears, Zimbabwe has little or no rain. This means corn crops in Zimbabwe are poor. The last El Nino was in 1991 to 1993. That was when southeastern Africa suffered a serious lack of rain.
The scientists wrote about their recent work in the publication Nature. Their computer program can tell when an El Nino will develop up to a year before it does. They suggest that this could provide an effective early warning system for southern Africa, and could prevent many people from starving.
1.El Nino is known as ________.
A. the changing of the weather in southern Africa
B. the weather which brings drought (旱灾) to Africa
C. the warming of waters in the Pacific Ocean
D. the weather phenomenon that brings heavy rains to Africa
2.Scientists study El Nino in order that ________.
A. they can put all this information into their computers
B. they can tell why Zimbabwe has little or no rain
C. they can do some research work in this field
D. they can provide a kind of early warning to the place that will suffer from drought
3.Which of the following is TRUE according to the passage?
A. Scientists come to understand how El Nino appears.
B. Three scientists from the USA work on this subject.
C. El Nino has something to do with Zimbabwe’s poor crops.
D. Southern Africa suffered a serious drought and many people died from hunger.
高三英语阅读理解中等难度题查看答案及解析
Scientists around the world have been studying the warming of waters in the Pacific Ocean known as El Nino （厄尔尼诺）. The appearance of El Nino is known to affect the weather around the world. Scientists still do not completely understand it. Yet they now find they can use it to tell about the future in different areas of the world.
One example is the work of two scientists at Columbia University in New York, Mark Cane and Gordon Eshel. A scientist of Zimbabwe（津巴布韦）, Roger Buckland worked with them. They have found that when El Nino appears, Zimbabwe has little or no rain. This means corn crops in Zimbabwe are poor. The last El Nino was in 1991 to 1993. That was when southeastern Africa suffered a serious lack of rain.
The scientists wrote about their recent work in the publication（出版物）Nature. Their computer program can tell when an El Nino will develop up to a year before it does. They suggest that this could provide an effective early warning system for southern Africa, and could prevent many people from starving.
1.El Nino is known as ___.
A. the changing of the weather in southern Africa
B. the warming of waters in the Pacific Ocean
C. the weather which brings drought（旱灾）to Africa
D. the weather phenomenon（现象）that brings heavy rains to Africa
2.Scientists study El Nino in order that ___.
A. they can provide a kind of early warning to the place that will suffer from drought
B. they can tell why Zimbabwe has little or no rain
C. they can do some research work in this field.
D. they can put all this information into their computers.
3.Which of the following is TRUE according to the passage?
A. Scientists come to understand how El Nino appears.
B. Three scientists from the USA work on this subject.
C. Southern Africa suffered a serious drought and many people died from hunger.
D. El Nino has something to do with Zimbabwe’s poor crops.
4.Which of the following is NOT true according to the article?
A. The computer is used in this research work.
B. Scientists know when an El Nino appears by means of the computer program.
C. The scientists published their results of the research work.
D. Nature is the name of the article written recently by the scientists.
5.What’s the best title for this passage?
A. Appearance of El Nino is Predictable（可预测的）
B. Drought in Zimbabwe
C. Early Warning System
D. Weather in Africa
高三英语阅读理解中等难度题查看答案及解析
Millions of years ago dinosaurs (恐龙) lived on the earth. In the days of dinosaurs the whole earth was warm and wet. There were green forests and they could find enough to eat. Later, parts of the earth became cold and dry. and the forests there died. Then dinosaurs could not find enough to eat. This must be one reason why dinosaurs died out.
We can guess another reason. New kinds of animals came on the earth. Some had big brains and were fast and strong. They could kill dinosaurs. There may be other reasons that we don’t know about yet. Scientists are trying to make more discoveries about dinosaurs.
Dinosaurs were of many sizes and shapes (形状). Some were as small as chickens, while some were about 90 feet long.
There were also terrible fights between dinosaurs. They might have happened more than 100 million years ago. Though there was no man to see any of the fights, we can be told by the animal’s footprints (足迹) that fight did take place.
1.According to the passage, dinosaurs did exist only ______on the earth.
| A．for millions of years | B．millions of years ago |
| C．more than 100 millions years ago | D．when it was warm and wet somewhere |
2.One reason why dinosaurs died out is that______.
| A．there were too many dinosaurs |
| B．parts of the earth became cold and dry |
| C．the dead forests there could not supply them with enough food |
| D．they couldn’t find enough to eat |
3.One more reason may be that ______.
| A．new kinds of animals came on the earth |
| B．some fast and strong animals with big brains could kill them |
| C．some dinosaurs were as small as chickens |
| D．some big dinosaurs died in the fights |
4.We can see from this passage ______.
| A．scientists are trying to make some dinosaurs | B．dinosaurs are dangerous enough |
| C．dinosaurs are worth studying | D．scientists know nothing about dinosaurs |
高三英语阅读理解中等难度题查看答案及解析
Since the end of World War I(WWI) in 1918, Canadians, and millions of others around the world have paused at the 11th hour of the 11th day of the 11th month to honour the sacrifice our soldiers have made in different ways, fighting for the freedoms that we all enjoy today.
Known as Remembrance Day, the day originated as a tribute to the soldiers of WWI, a dark period for our young country, which claimed the lives of over 60,000 military personnel and civilians and over 16 million dead worldwide. As there are no more surviving soldiers of WWI, today we rely on the wisdom and words of those soldiers who fought in the wars that followed and this day now also recognizes their heroic contribution. They tell us to always remember what those brave souls fought for, and all they ask in return is that we never forget.
That’s why we wear the red poppy(罂粟花)；that’s why when we see a soldier in uniform we should stop him or her and say “Thank you”; that’s why we take a pause from our busy lives for two short minutes today to honor that request. Yet this message is fading away, year after year. Take for example the terrible decision to allow parents to excuse students from Remembrance Day ceremonies at school. Not only is this disrespectful, it distances the student from his or her classmates.
It is difficult to understand why any Canadian parent would want to remove their child from the time-honored tradition of reading the poem in Flanders Fields, while a wreath of poppies is laid. It is more important than ever to teach school-aged children about our history, no matter how violent it was. Sheltering them from the realities of war is a great disservice. Understanding why conflicts happened, or happen today can help shape choices and decisions they make as adults.
Of course, because we live in a free society, we cannot force an individual to do something. It is unfortunate, but some parents now have their child “opt-out” of the services. These people should be reminded they are free to make such choices only because of the men and women the rest of us are remembering.
1.Which of the following is NOT mentioned as a Remembrance Day activity today?
A. Stopping at 11a.m. to remember the war dead.
B. Listening to stories told by WWI soldiers.
C. Wearing a red poppy to show respect.
D. Showing gratitude to soldiers in uniform.
2.What can we learn from the passage?
A. War history is too violent for school children
B. The writer was once a soldier in the Canadian army
C. Few students are willing to take part in Remembrance Day ceremonies.
D. More parents are keeping their children away from frightening war stories.
3. The underlined word “It” in the last paragraph probably refers to_______.
A. the death of so many soldiers in wars
B. the fact that there were so many wars after WWI.
C. people’s ungratefulness for the freedom they have.
D. removing children from Remembrance Day events.
4.The writer believes that ______.
A. the sacrifice of the soldiers should always be remembered.
B. Remembrance Day is becoming less important for soldiers.
C. school no longer think Remembrance Day is necessary.
D. people should be forced to learn about the realities of war.
高三英语阅读理解中等难度题查看答案及解析