Dogs are known for their sense of smell.They can find missing people and things like bombs and illegal drugs.Now a study suggests that the animal known as man’s best friend can even find bladder(膀胱)cancer.
Cancer cells are thought to produce chemicals with unusual odors(气味).Researchers think dogs have the ability to smell these odors, even in very small amounts, in urine(尿).The sense of smell in dogs is thousands of times better than in humans.
The study follows reports of cases where, for example, a dog showed great interest in a growth on the leg of its owner.The man was later found to be skin cancer.Carolyn Willis led a team of researchers at Amersham Hospital in England.They trained different kinds of dogs for the experiment.The study involved urine collected from bladder cancer patients, from people with other diseases and from healthy people.Each dog was tested 8 times.In each test there were 7 samples for the dogs to smell.The dog should signal the one from a bladder cancer patient by lying down next to it.Two cocker dogs were correct 56 percent of the time.But the scientists reported an average success rate of 41 percent.The British Medical Journal published the research.In all, 36 bladder cancer patients and 108 other people took part.During training, all the dogs reportedly even identified(认出)a cancer in a person who had tested healthy before the study.Doctors found a growth on the person’s right kidney(肾).Carolyn Willis says dogs could help scientists identify the combined chemicals produced by bladder cancer.That information could then be used to develop machines to test for the chemicals.The team also plans to use dogs to help identify markers for other kinds of cancer.
49.What’s the general idea of the text?
A.Dogs have a good sense of smell B.Dogs can help cure cancer
C.Dogs can smell cancer D.Dogs help perform experiments
50.According to the text, people who suffer bladder cancer_____
A.often have urine with unusual smell B.probably smoke cigarettes in their life
C.can easily make dogs lie down
D.are likely to die within nine years
51.The underlined word “involved” in the text is closest in meaning to _____.
A.showed B.used C.proved D.preferred
52.What can we conclude from the last paragraph?
A.Dogs can only smell bladder cancer.
B.Dogs have a good knowledge of cancer.
C.Cancer doesn’t have any sign in the beginning.
D.Scientists might invent some equipment to test cancer.
高三英语阅读理解中等难度题
Dogs are known for their sense of smell.They can find missing people and things like bombs and illegal drugs.Now a study suggests that the animal known as man’s best friend can even find bladder(膀胱)cancer.
Cancer cells are thought to produce chemicals with unusual odors(气味).Researchers think dogs have the ability to smell these odors, even in very small amounts, in urine(尿).The sense of smell in dogs is thousands of times better than in humans.
The study follows reports of cases where, for example, a dog showed great interest in a growth on the leg of its owner.The man was later found to be skin cancer.Carolyn Willis led a team of researchers at Amersham Hospital in England.They trained different kinds of dogs for the experiment.The study involved urine collected from bladder cancer patients, from people with other diseases and from healthy people.Each dog was tested 8 times.In each test there were 7 samples for the dogs to smell.The dog should signal the one from a bladder cancer patient by lying down next to it.Two cocker dogs were correct 56 percent of the time.But the scientists reported an average success rate of 41 percent.The British Medical Journal published the research.In all, 36 bladder cancer patients and 108 other people took part.During training, all the dogs reportedly even identified(认出)a cancer in a person who had tested healthy before the study.Doctors found a growth on the person’s right kidney(肾).Carolyn Willis says dogs could help scientists identify the combined chemicals produced by bladder cancer.That information could then be used to develop machines to test for the chemicals.The team also plans to use dogs to help identify markers for other kinds of cancer.
49.What’s the general idea of the text?
A.Dogs have a good sense of smell B.Dogs can help cure cancer
C.Dogs can smell cancer D.Dogs help perform experiments
50.According to the text, people who suffer bladder cancer_____
A.often have urine with unusual smell B.probably smoke cigarettes in their life
C.can easily make dogs lie down
D.are likely to die within nine years
51.The underlined word “involved” in the text is closest in meaning to _____.
A.showed B.used C.proved D.preferred
52.What can we conclude from the last paragraph?
A.Dogs can only smell bladder cancer.
B.Dogs have a good knowledge of cancer.
C.Cancer doesn’t have any sign in the beginning.
D.Scientists might invent some equipment to test cancer.
高三英语阅读理解中等难度题查看答案及解析
Dogs are known for a strong sense of smell. Their noses can be trained to identify different smells. Dogs are often used in search and rescue operations and to sniff for things like drugs and explosives. Some dogs have even been trained to sniff for cancer in people.
Researchers have been trying to reproduce the extraordinary sense of smell that real dogs are born with. Now, officials at the Glasgow airport in Scotland are testing a new security device called an “electronic sniffer dog”. The electronic sniffer dog represents one of the latest developments in the area of smell technology.
A Scottish company, Cascade Technologies, joined with the French security company Morpho to develop it. The device uses lasers to identify explosive materials in gases in the air. The purpose is to identify explosives that may be hidden on a person’s body.
The machine looks similar to the metal detectors now used at airports. Passengers walk through the machine as the lasers test the surrounding air. People are not required to take off their coats, belts or shoes as part of the security process. And, unlike full-body scanners, the new device does not show images of the passengers.
Officials at Cascade Technologies say the machine can process one person per second and produce almost immediate results. They say future development could cut security processing times at airports by screening all passengers at walking speed.
Professor Yushan Yan, the head of Chemical and Environmental Engineering at the University of California, Riverside, points out that unlike real dogs, electronic devices do not get tired or need to be walked or require food and water. Professor Yan says real dogs also have other needs. “They also need very extensive training that could be expensive. And when they work they have to have a very skilled handler around them.”
But Professor Yan says there is an important area where man’s best friend still wins compared to technology. “In terms of sensitivity and selectivity, the current technology out there is still inferior. The real dog has amazing capability of identifying some really minor amount of explosives.”
1. The electronic sniffer dogs will be used to____
A. replace real dogs to be as pets for people
B. search for and rescue people who are in trouble
C. help people look after patients in the hospital
D. identify drugs and explosives in places like the airport
2.Which of the following is true of the electronic sniffer dog?
A. The device uses lasers to examine for explosive materials.
B. People have to take off their clothes when walking through the device.
C. The device will show images of the passengers.
D. The device can process all passengers at walking speed.
3. The advantages of the electronic sniffer dog over the real dog include the following EXCEPT______
A. its convenience B. its high efficiency
C. its sensitivity D. its low consumption
4.The underlined word “inferior” in the last paragraph most probably has the meaning of_____.
A. concentrating all one’s effort on a specific area
B. not as good as sb. / sth. else
C. that cannot be clearly understood
D. necessary for completeness
高三英语阅读理解中等难度题查看答案及解析
Dogs have an amazing sense of smell thanks to 300million smell receptors in their noses, compared to only five million in the human nose. Medical dogs are trained by smelling samples of people already diagnosed with cancer and those of people without the disease so they can learn to tell the difference.
Dr Claire Guest began training her dog Daisy to smell out the killer disease in urine(小便) and breath samples(样品) when she was young. So far Daisy has found cancer in 551 patients, of which 93 per cent were accurate. And she discovered Dr Guest’s breast cancer before it was diagnosed– the first time she has discovered the disease actually growing in someone’s body, rather than by smelling a sample.
Dr Guest, 50, chief executive of charity Medical Detection Dogs, said: “She pushed against my body with her nose repeatedly – I pushed her away, but she pushed against me again, clearly upset. She pushed me so hard that it hurt me. “Her behaviour was totally out of character – she was normally such a happy dog ... I felt the tender area where she’d pushed me, and over the next few days I discovered the tiniest lump(肿块).
“If it wasn’t for Daisy it would have gone hidden for much longer and could have been more serious,” Dr Guest added. “My own pet labrador saved my life.”
Animal rescue charity Blue Cross presented Daisy with a medal for her achievements. She faced tough competition, including JJ, a bomb detection dog who has saved soldiers’ lives in Afghanistan.
Steve Goody, the charity’s deputy chief executive, said: “Cancer affects the lives of thousands of people and Daisy has made a huge contribution to the diagnosis and early treatment of cancers – she’s a very deserving medal recipient.”
Daisy is now helping to train a team of 12 dogs at Medical Detection Dogs and is a ‘senior consultant’ for the UK’s first ever trial using dogs to discover breast cancer.
1.Why was Daisy awarded a medal?
A. Because she can help discover cancer early.
B. Because she can smell the urine and breath samples.
C. Because she has saved many people’s lives by barking.
D. Because she has saved many soldiers’ lives in Afghanistan.
2.Which of the following words is closest in meaning to “recipient” in the last paragraph ________but one?
A. contributor B. ancestor C. helper D. receiver
3. How did Daisy discover Dr Guest’s cancer?
A. By smelling the urine sample.
B. By smelling the breath sample.
C. By smelling the hidden cancer.
D. By pushing Dr Guest hard.
4. From the text we can infer that __________.
A. Cancer is easy to cure.
B. Daisy and JJ competed hardly for the medal.
C. Daisy is training other dogs to discover breast cancer.
D. Dogs’ special sense of discovering cancer is highly valued.
高三英语阅读理解中等难度题查看答案及解析
The police always take advantage of dogs’ ____ sense of smell to search for something.
A. sensitive B. sharp C. practical D. tremendous
高三英语单项填空中等难度题查看答案及解析
Strangely, some people find that they can smell one type of flower but not another, while others are _____ to the smells of both flowers.
A. sensitive B. native
C. familiar D. obvious
高三英语单项填空中等难度题查看答案及解析
In Canada you can find dogs, cats, horses, etc. in almost every family. These are their pets. People love these pets and have them as their good friends. Before they keep them in their houses, they take them to animal hospitals to give them injections(注射) so that they won’ t carry disease. They have special animal food stores, though they can get animal food in almost every kind of store. Some people spend around two hundred Canadian dollars a month on animal food. When you visit people’ s houses, they would be very glad to show you their pets and they are very proud of them. You will also find that almost every family has a bird feeder in their garden. All kinds of birds are welcomed to come and have a good meal. They are free to come and go and nobody is allowed to kill any animal in Canada. They have a law against killing wild animals. If you killed an animal, you would be punished. If an animal happened to get run over by a car, people would be very sad about it.
People in Canada have many reasons to like animals. One of them might be: Their family ties are not as close as ours. When children grow up, they leave their parents and start their own life. Then the old will feel lonely. But pets can solve this problem. They can be good friends and never leave them alone.
1.The passage mainly talks about ________ .
A.how to keep disease from pets |
B.pets in Canada |
C.how to take good care of pets |
D.life of the old in Canada |
2.In Canada, children leave their parents when they grow up because _____ .
A.they don’ t love their parents any more |
B.they can only find jobs far from their parents |
C.their parents’ houses are too small |
D.they wouldn’t depend on their parents any more |
3.Which of the following is TRUE?
A.People buy animal food only at the animal food stores. |
B.Pets eat better than people. |
C.Almost every family has a birdcage in his house. |
D.Any bird can come to the bird feeders to eat. |
高三英语阅读理解中等难度题查看答案及解析
In Canada you can find dogs,cats,horses,etc.in almost every family.These are their pets.People love these pets and have them as their good friends.Before they keep them in their houses,they take them to animal hospitals to give them injections so that they won’t carry disease.They have special animal food stores,though they can get animal food in almost every kind of store.Some people spend around two hundred Canadian dollars a month on animal food.When you visit people’s houses,they would be very glad to show you their pets and they are very proud of them.You will also find that almost every family has a bird feeder in their garden.All kinds of birds are welcomed to come and have a good meal.They are free to come and go and nobody is allowed to kill any animal in Canada.They have a law against killing wild animals.If you killed an animal,you would be punished.If an animal happened to get run over by a car,people would be very sad about it.
People in Canada have many reasons to like animals.One of them might be:Their family ties are not as close as ours.When children grow up, they leave their parents and start their own life.Then the old will feel lonely.But pets can solve this problem.They can be good friends and never leave them alone.(词数242)
1.The passage mainly talks about________.
A. how to keep disease from pets B. pets in Canada
C. how to take good care of pets D. life of the old in Canada
2.In Canada,children leave their parents when they grow up because________.
A. they don’t love their parents any more
B. they can only find jobs far from their parents
C. their parents’ houses are too small
D. they wouldn’t depend on their parents any more
3.Which of the following is TRUE?
A. People buy animal food only at the animal food stores.
B. Pets eat better than people.
C. Almost every family has a birdcage in his house.
D. Any bird can come to the bird feeders to eat.
高三英语阅读理解中等难度题查看答案及解析
In Canada you can find dogs,cats,horses,etc. in almost every family. These are their pets. People love these pets and have them as their good friends. Before they keep them in their houses,they take them to animal hospitals to give them injections(注射)so that they won’t carry disease. They have special animal food stores, though they can get animal food in almost every kind of store. Some people spend around two hundred Canadian dollars a month on animal food. When you visit people’s houses,they would be very glad to show you their pets and they are very proud of them. You will also find that almost every family has a bird feeder in their garden. All kinds of birds are welcomed to come and have a good meal. They are free to come and go and nobody is allowed to kill any animal in Canada. They have a law against killing wild animals. If you killed an animal,you would be punished. If an animal happened to get run over by a car,people would be very sad about it.
People in Canada have many reasons to like animals. One of them might be:Their family ties are not as close as ours. When children grow up,they leave their parents and start their own life. Then the old will feel lonely. But pets can solve this problem. They can be good friends and never leave them alone.
1.The passage mainly talks about ________ .
A.how to keep disease from pets |
B.pets in Canada |
C.how to take good care of pets |
D.life of the old in Canada |
2.In Canada,children leave their parents when they grow up because ___.
A.they don’t love their parents any more |
B.they can only find jobs far from their parents |
C.their parents’ houses are too small |
D.they wouldn’t depend on their parents any more |
3.Which of the following is TRUE?
A.Peoplebuyanimal foodonlyattheanimalfood stores. |
B.Pets eat better than people. |
C.Almost every family has a birdcage in his house. |
D.Any bird can come to the bird feeders to eat. |
高三英语阅读理解中等难度题查看答案及解析
In Canada you can find dogs,cats,horses,etc.in almost every family.These are their pets.People love these pets and have them as their good friends.Before they keep them in their houses,they take them to animal hospitals to give them injections so that they won’t carry disease.They have special animal food stores,though they can get animal food in almost every kind of store.Some people spend around two hundred Canadian dollars a month on animal food.When you visit people’s houses,they would be very glad to show you their pets and they are very proud of them.You will also find that almost every family has a bird feeder in their garden.All kinds of birds are welcomed to come and have a good meal.They are free to come and go and nobody is allowed to kill any animal in Canada.They have a law against killing wild animals.If you killed an animal,you would be punished.If an animal happened to get run over by a car,people would be very sad about it.
People in Canada have many reasons to like animals.One of them might be:Their family ties are not as close as ours.When children grow up, they leave their parents and start their own life.Then the old will feel lonely.But pets can solve this problem.They can be good friends and never leave them alone.(词数242)
1.The passage mainly talks about .
A.how to keep disease from pets | B.pets in Canada |
C.how to take good care of pets | D.life of the old in Canada |
2.In Canada,children leave their parents when they grow up because .
A.they don’t love their parents any more |
B.they can only find jobs far from their parents |
C.their parents’ houses are too small |
D.they wouldn’t depend on their parents any more |
3.Which of the following is TRUE?
A.People buy animal food only at the animal food stores. |
B.Pets eat better than people. |
C.Almost every family has a birdcage in his house. |
D.Any bird can come to the bird feeders to eat. |
高三英语阅读理解中等难度题查看答案及解析
Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.
A. sense B. view C. means D. idea
高三英语单项填空简单题查看答案及解析