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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50. Homeopathy, the alternative therapy created in 1796 by Samuel Hahnemann, and now widely used all over the world, is based on the belief that the body can be stimulated to heal itself. A central principle of the “treatment” is that “like cures like”, meaning a subtance that causes certain symptoms can also help to remove those symptoms. Medicines used in homeopathy are created by heavily diluting in water the subtance in question and subsequently shaking the liquid vigorously. They can then be made into tablets and pills. Practitioners believe that the more a subtance is diluted in this way, the greater its power to treat symptoms. However, in a new study, a working committee of medical experts at Australia’s National Health and Medical Research Council (NHMRC) has claimed that homeopathic medicines are only as effective as placebos at treating illness. Their research, involving the analysis of numerous reports from homeopathy interest groups and the public, concluded that there is no reliable evidence that homeopathy works.Moreover, researchers uncovered no fewer than 68 ailments that homeopathic remedies had failed to treat, including asthma, sleep disturbances, cold and flu, and arthritis. As a result of the findings, the NHMRC is urging health workers to inform their patients to be wary of anecdotal evidence that appears to support the effectiveness of homeopathic medicine. “It isn’t possible to tell whether a health treatment is effective or not simply by considering the experience of one individual or the beliefs of a health practitioner,” says the report. Experts believe that most illnesses said to have been cured by homeopathy would be cured by the body on its own without taking the medicine. Apparently, many illnesses are short-lived by their very nature which often leads to people believing that it is the homeopathy that cures them. A more serious matter is highlighted by Professor John Dwyer of the University of New South Wales. As an immunologist, he is concerned about homeopathic vaccinations on offer for diseases such as HIV, tuberculosis, and malaria, none of which he considers effective. According to Professor John Dwyer, the concept that homeopathic vaccinations are just as good as traditional vaccinations in delusion, and those who believe it are failing to protect themselves and their childrenWhich could be the best title for the passage? 

Xem chi tiết 1.4 K lượt xem 5 năm trước

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 26 to 30.Being repeatedly late may just be accidental – or could it show a deeply rooted psychological desire to express your own superiority? When I worked in an office, meetings would often start late, usually because of a certain individual. Then they would overrun and the whole day lost its shape. But the individual was high-ranking and self-important: nobody challenged. So what are the ethics of lateness?There’s a psychotherapist called Irvin Yalom who argues that all behaviour reflects psychology. Just as people who like to be on time are motivated by certain deep-seated beliefs, so those who make others wait are acting out an inner agenda, often based on an acute sense of power. There’s famous footage in which Silvio Berlusconi kept Angela Merkel waiting while he made a call on his mobile. It speaks volumes.But that is when all lateness is in one’s control. What about when your train is cancelled or your flight is delayed or you had to wait longer for the plumber to arrive? In such cases, there’s not a lot of psychology involved. Or is there? Some people will genuinely worry about the impact it will have on those left waiting, while others might secretly enjoy the power of their absence.The essential fact is that lateness means breaking a convention – you can only be late in respect of a time agreed with other people. Regardless of psychology, it has a social value. And when we treat other people’s time as less valuable than our own, we treat them as inferiorWhat does the word “it” in paragraph 4 refer to? 

Xem chi tiết 3.6 K lượt xem 5 năm trước

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 26 to 30.Being repeatedly late may just be accidental – or could it show a deeply rooted psychological desire to express your own superiority? When I worked in an office, meetings would often start late, usually because of a certain individual. Then they would overrun and the whole day lost its shape. But the individual was high-ranking and self-important: nobody challenged. So what are the ethics of lateness?There’s a psychotherapist called Irvin Yalom who argues that all behaviour reflects psychology. Just as people who like to be on time are motivated by certain deep-seated beliefs, so those who make others wait are acting out an inner agenda, often based on an acute sense of power. There’s famous footage in which Silvio Berlusconi kept Angela Merkel waiting while he made a call on his mobile. It speaks volumes.But that is when all lateness is in one’s control. What about when your train is cancelled or your flight is delayed or you had to wait longer for the plumber to arrive? In such cases, there’s not a lot of psychology involved. Or is there? Some people will genuinely worry about the impact it will have on those left waiting, while others might secretly enjoy the power of their absence.The essential fact is that lateness means breaking a convention – you can only be late in respect of a time agreed with other people. Regardless of psychology, it has a social value. And when we treat other people’s time as less valuable than our own, we treat them as inferiorIt can be inferred from the reading passage that _______. 

Xem chi tiết 442 lượt xem 5 năm trước

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 26 to 30.Being repeatedly late may just be accidental – or could it show a deeply rooted psychological desire to express your own superiority? When I worked in an office, meetings would often start late, usually because of a certain individual. Then they would overrun and the whole day lost its shape. But the individual was high-ranking and self-important: nobody challenged. So what are the ethics of lateness?There’s a psychotherapist called Irvin Yalom who argues that all behaviour reflects psychology. Just as people who like to be on time are motivated by certain deep-seated beliefs, so those who make others wait are acting out an inner agenda, often based on an acute sense of power. There’s famous footage in which Silvio Berlusconi kept Angela Merkel waiting while he made a call on his mobile. It speaks volumes.But that is when all lateness is in one’s control. What about when your train is cancelled or your flight is delayed or you had to wait longer for the plumber to arrive? In such cases, there’s not a lot of psychology involved. Or is there? Some people will genuinely worry about the impact it will have on those left waiting, while others might secretly enjoy the power of their absence.The essential fact is that lateness means breaking a convention – you can only be late in respect of a time agreed with other people. Regardless of psychology, it has a social value. And when we treat other people’s time as less valuable than our own, we treat them as inferiorWhich of the following is NOT TRUE according to the passage? 

Xem chi tiết 1.1 K lượt xem 5 năm trước

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 26 to 30. Being repeatedly late may just be accidental – or could it show a deeply rooted psychological desire to express your own superiority? When I worked in an office, meetings would often start late, usually because of a certain individual. Then they would overrun and the whole day lost its shape. But the individual was high-ranking and self-important: nobody challenged. So what are the ethics of lateness? There’s a psychotherapist called Irvin Yalom who argues that all behaviour reflects psychology. Just as people who like to be on time are motivated by certain deep-seated beliefs, so those who make others wait are acting out an inner agenda, often based on an acute sense of power. There’s famous footage in which Silvio Berlusconi kept Angela Merkel waiting while he made a call on his mobile. It speaks volumes. But that is when all lateness is in one’s control. What about when your train is cancelled or your flight is delayed or you had to wait longer for the plumber to arrive? In such cases, there’s not a lot of psychology involved. Or is there? Some people will genuinely worry about the impact it will have on those left waiting, while others might secretly enjoy the power of their absence. The essential fact is that lateness means breaking a convention – you can only be late in respect of a time agreed with other people. Regardless of psychology, it has a social value. And when we treat other people’s time as less valuable than our own, we treat them as inferiorWhat is the “speak volumes” in paragraph 2 closest in meaning to? 

Xem chi tiết 1.8 K lượt xem 5 năm trước

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 26 to 30. Being repeatedly late may just be accidental – or could it show a deeply rooted psychological desire to express your own superiority? When I worked in an office, meetings would often start late, usually because of a certain individual. Then they would overrun and the whole day lost its shape. But the individual was high-ranking and self-important: nobody challenged. So what are the ethics of lateness? There’s a psychotherapist called Irvin Yalom who argues that all behaviour reflects psychology. Just as people who like to be on time are motivated by certain deep-seated beliefs, so those who make others wait are acting out an inner agenda, often based on an acute sense of power. There’s famous footage in which Silvio Berlusconi kept Angela Merkel waiting while he made a call on his mobile. It speaks volumes. But that is when all lateness is in one’s control. What about when your train is cancelled or your flight is delayed or you had to wait longer for the plumber to arrive? In such cases, there’s not a lot of psychology involved. Or is there? Some people will genuinely worry about the impact it will have on those left waiting, while others might secretly enjoy the power of their absence. The essential fact is that lateness means breaking a convention – you can only be late in respect of a time agreed with other people. Regardless of psychology, it has a social value. And when we treat other people’s time as less valuable than our own, we treat them as inferiorWhat is the main idea of the passage? 

Xem chi tiết 822 lượt xem 5 năm trước

Read the following passage and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer to each for the questions.Millions of people tune into the weather forecast each evening on televisions. Most of them imagine that the presenter does little more than arrive at the studio a few minutes before the broadcast, read the weather, and then go home.In fact, this imagine is far from the truth. The two-minute bulletin which we all rely on when we need to know tomorrow’s weather is the result of a hard day’s work by the presenter, who is actually a highly-qualified meteorologist.Every morning after arriving at the TV studios, the first task of the days is to collect the latest data from the national Meteorological Office. This office provides up-to-the-minute information about weather conditions throughout the day, both in Britain and around the world. The information is very detailed and includes predictions, satellite and radar pictures, as well as more technical data. After gathering all the relevant material from this office, the forecaster has to translate the scientific terminology and maps into images and word which viewers can easily understand.The final broadcast is then carefully planned. It is prepared in the same way as other programmes. The presenter decides what to say and in what order to say it. Next, a “story board” is drawn up which lay out the script word for word. What make a weather forecast more complicated than other programmes are the maps and electronic images which are required. The computer has to be programmed so that the pictures appear in the correct order during the bulletin.The time allocated for each broadcast can also alter. This is because the weather report is screened after the news, which can vary in length. The weather forecaster doesn’t always know how much time is available, which means that he/ she has to be thoroughly prepared so that the material can be adapted to the time available.Another related complication is that the weather forecast has to be a live broadcast; it cannot be pre- recorded. Live shows are very nerve- racking for the presenter because almost anything can go wrong. Perhaps the most worrying aspect for every weather forecaster is getting the following day’s predictions wrong. Unfortunately for them this is not an unusual occurrence; the weather is not always possible to predict accurately.The weather is a national obsession in Britain, Perhaps because it is so changeable. It’s the national talking point, and most people watch at least one daily bulletin. It can be mortifying for a weather man or woman who has predicted rain for the morning to wake up to brilliant sunshine. These days, a weather forecaster’s job is even more complicated because they are replied upon to predict other environmental conditions. For example, in the summer the weather forecast has to include the pollen count for hay fever sufferers. Some also include reports on ultraviolet radiation intensity to help people avoid sunburn.The job of the weather forecaster is certainly far more complicated than just pointing at a map and describing weather conditions. It’s a job for professionals who can cope with stressful and demanding conditionsMeteorologists get their forecasting information from

Xem chi tiết 476 lượt xem 5 năm trước

Read the following passage and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer to each for the questions.Millions of people tune into the weather forecast each evening on televisions. Most of them imagine that the presenter does little more than arrive at the studio a few minutes before the broadcast, read the weather, and then go home.In fact, this imagine is far from the truth. The two-minute bulletin which we all rely on when we need to know tomorrow’s weather is the result of a hard day’s work by the presenter, who is actually a highly-qualified meteorologist.Every morning after arriving at the TV studios, the first task of the days is to collect the latest data from the national Meteorological Office. This office provides up-to-the-minute information about weather conditions throughout the day, both in Britain and around the world. The information is very detailed and includes predictions, satellite and radar pictures, as well as more technical data. After gathering all the relevant material from this office, the forecaster has to translate the scientific terminology and maps into images and word which viewers can easily understand.The final broadcast is then carefully planned. It is prepared in the same way as other programmes. The presenter decides what to say and in what order to say it. Next, a “story board” is drawn up which lay out the script word for word. What make a weather forecast more complicated than other programmes are the maps and electronic images which are required. The computer has to be programmed so that the pictures appear in the correct order during the bulletin.The time allocated for each broadcast can also alter. This is because the weather report is screened after the news, which can vary in length. The weather forecaster doesn’t always know how much time is available, which means that he/ she has to be thoroughly prepared so that the material can be adapted to the time available.Another related complication is that the weather forecast has to be a live broadcast; it cannot be pre- recorded. Live shows are very nerve- racking for the presenter because almost anything can go wrong. Perhaps the most worrying aspect for every weather forecaster is getting the following day’s predictions wrong. Unfortunately for them this is not an unusual occurrence; the weather is not always possible to predict accurately.The weather is a national obsession in Britain, Perhaps because it is so changeable. It’s the national talking point, and most people watch at least one daily bulletin. It can be mortifying for a weather man or woman who has predicted rain for the morning to wake up to brilliant sunshine. These days, a weather forecaster’s job is even more complicated because they are replied upon to predict other environmental conditions. For example, in the summer the weather forecast has to include the pollen count for hay fever sufferers. Some also include reports on ultraviolet radiation intensity to help people avoid sunburn.The job of the weather forecaster is certainly far more complicated than just pointing at a map and describing weather conditions. It’s a job for professionals who can cope with stressful and demanding conditionsWhat perception do most people have a weather forecasters?

Xem chi tiết 517 lượt xem 5 năm trước

Read the following passage and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer to each for the questions. Telecommuting-substituting the computer for the trip to the job-has been hailed as a solution to all kinds of problems related to office work. For workers, it promises freedom from the office, less time wasted in traffic, and help with child-care conflicts. For management, telecommuting helps keep high performers on board, minimizes tardiness and absenteeism by eliminating commutes, allows periods of solitude for high-concentration tasks, and provides scheduling flexibility. In some areas, such as Southern California and Seattle, Washington, local governments are encouraging companies to start telecommuting programs in order to reduce rush-hour congestion and improve air quality, but these benefits do not come easily. Making a telecommuting program work requires careful planning and an understanding of the differences between telecommuting realities and popular images. Many workers are seduced by rosy illusions of life as a telecommuter. A computer programmer from New York City moves to the tranquil Adirondack Mountains and stays in contact with her office via computer. A manager comes into his Office three days a week and works at home the other two. An accountant stays home to care for child; she hooks up her telephone modem connections and does office work between calls to the doctor. These are powerful images, but they are a limited reflection of reality. Telecommuting workers soon learn that it is almost impossible to concentrate on work and care for a young child at the same time. Before a certain age, young children cannot recognize, much less respect, the necessary boundaries between work and family. Additional child support is necessary if the parent is to get any work done. Management, too, must separate the myth from the reality. Although the media has paid a great deal of attention to telecommuting, in most cases it is the employee’s situation, not the availability of technology, that precipitates a telecommuting arrangement. That is partly why, despite the widespread press coverage, the number of companies with work-at-home programs or policy guidelines remains smallWhich of the following does the author mention as a possible disadvantage of telecommuting?

Xem chi tiết 552 lượt xem 5 năm trước

Read the following passage and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer to each for the questions. Telecommuting-substituting the computer for the trip to the job-has been hailed as a solution to all kinds of problems related to office work. For workers, it promises freedom from the office, less time wasted in traffic, and help with child-care conflicts. For management, telecommuting helps keep high performers on board, minimizes tardiness and absenteeism by eliminating commutes, allows periods of solitude for high-concentration tasks, and provides scheduling flexibility. In some areas, such as Southern California and Seattle, Washington, local governments are encouraging companies to start telecommuting programs in order to reduce rush-hour congestion and improve air quality, but these benefits do not come easily. Making a telecommuting program work requires careful planning and an understanding of the differences between telecommuting realities and popular images. Many workers are seduced by rosy illusions of life as a telecommuter. A computer programmer from New York City moves to the tranquil Adirondack Mountains and stays in contact with her office via computer. A manager comes into his Office three days a week and works at home the other two. An accountant stays home to care for child; she hooks up her telephone modem connections and does office work between calls to the doctor. These are powerful images, but they are a limited reflection of reality. Telecommuting workers soon learn that it is almost impossible to concentrate on work and care for a young child at the same time. Before a certain age, young children cannot recognize, much less respect, the necessary boundaries between work and family. Additional child support is necessary if the parent is to get any work done. Management, too, must separate the myth from the reality. Although the media has paid a great deal of attention to telecommuting, in most cases it is the employee’s situation, not the availability of technology, that precipitates a telecommuting arrangement. That is partly why, despite the widespread press coverage, the number of companies with work-at-home programs or policy guidelines remains smallWhich of the following is NOT mentioned as a problem for employers that is potentially solved by telecommuting?

Xem chi tiết 431 lượt xem 5 năm trước

Read the following passage and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer to each for the questions. Telecommuting-substituting the computer for the trip to the job-has been hailed as a solution to all kinds of problems related to office work. For workers, it promises freedom from the office, less time wasted in traffic, and help with child-care conflicts. For management, telecommuting helps keep high performers on board, minimizes tardiness and absenteeism by eliminating commutes, allows periods of solitude for high-concentration tasks, and provides scheduling flexibility. In some areas, such as Southern California and Seattle, Washington, local governments are encouraging companies to start telecommuting programs in order to reduce rush-hour congestion and improve air quality, but these benefits do not come easily. Making a telecommuting program work requires careful planning and an understanding of the differences between telecommuting realities and popular images. Many workers are seduced by rosy illusions of life as a telecommuter. A computer programmer from New York City moves to the tranquil Adirondack Mountains and stays in contact with her office via computer. A manager comes into his Office three days a week and works at home the other two. An accountant stays home to care for child; she hooks up her telephone modem connections and does office work between calls to the doctor. These are powerful images, but they are a limited reflection of reality. Telecommuting workers soon learn that it is almost impossible to concentrate on work and care for a young child at the same time. Before a certain age, young children cannot recognize, much less respect, the necessary boundaries between work and family. Additional child support is necessary if the parent is to get any work done. Management, too, must separate the myth from the reality. Although the media has paid a great deal of attention to telecommuting, in most cases it is the employee’s situation, not the availability of technology, that precipitates a telecommuting arrangement. That is partly why, despite the widespread press coverage, the number of companies with work-at-home programs or policy guidelines remains smallWhich of the following is NOT mentioned as a problem for office employees?

Xem chi tiết 3 K lượt xem 5 năm trước

Read the following passage and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer to each for the questions. Telecommuting-substituting the computer for the trip to the job-has been hailed as a solution to all kinds of problems related to office work. For workers, it promises freedom from the office, less time wasted in traffic, and help with child-care conflicts. For management, telecommuting helps keep high performers on board, minimizes tardiness and absenteeism by eliminating commutes, allows periods of solitude for high-concentration tasks, and provides scheduling flexibility. In some areas, such as Southern California and Seattle, Washington, local governments are encouraging companies to start telecommuting programs in order to reduce rush-hour congestion and improve air quality, but these benefits do not come easily. Making a telecommuting program work requires careful planning and an understanding of the differences between telecommuting realities and popular images. Many workers are seduced by rosy illusions of life as a telecommuter. A computer programmer from New York City moves to the tranquil Adirondack Mountains and stays in contact with her office via computer. A manager comes into his Office three days a week and works at home the other two. An accountant stays home to care for child; she hooks up her telephone modem connections and does office work between calls to the doctor. These are powerful images, but they are a limited reflection of reality. Telecommuting workers soon learn that it is almost impossible to concentrate on work and care for a young child at the same time. Before a certain age, young children cannot recognize, much less respect, the necessary boundaries between work and family. Additional child support is necessary if the parent is to get any work done. Management, too, must separate the myth from the reality. Although the media has paid a great deal of attention to telecommuting, in most cases it is the employee’s situation, not the availability of technology, that precipitates a telecommuting arrangement. That is partly why, despite the widespread press coverage, the number of companies with work-at-home programs or policy guidelines remains smallThe word “hailed” in the first paragraph is closest in meaning to

Xem chi tiết 437 lượt xem 5 năm trước

Read the following passage and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer to each for the questions. Telecommuting-substituting the computer for the trip to the job-has been hailed as a solution to all kinds of problems related to office work. For workers, it promises freedom from the office, less time wasted in traffic, and help with child-care conflicts. For management, telecommuting helps keep high performers on board, minimizes tardiness and absenteeism by eliminating commutes, allows periods of solitude for high-concentration tasks, and provides scheduling flexibility. In some areas, such as Southern California and Seattle, Washington, local governments are encouraging companies to start telecommuting programs in order to reduce rush-hour congestion and improve air quality, but these benefits do not come easily. Making a telecommuting program work requires careful planning and an understanding of the differences between telecommuting realities and popular images. Many workers are seduced by rosy illusions of life as a telecommuter. A computer programmer from New York City moves to the tranquil Adirondack Mountains and stays in contact with her office via computer. A manager comes into his Office three days a week and works at home the other two. An accountant stays home to care for child; she hooks up her telephone modem connections and does office work between calls to the doctor. These are powerful images, but they are a limited reflection of reality. Telecommuting workers soon learn that it is almost impossible to concentrate on work and care for a young child at the same time. Before a certain age, young children cannot recognize, much less respect, the necessary boundaries between work and family. Additional child support is necessary if the parent is to get any work done. Management, too, must separate the myth from the reality. Although the media has paid a great deal of attention to telecommuting, in most cases it is the employee’s situation, not the availability of technology, that precipitates a telecommuting arrangement. That is partly why, despite the widespread press coverage, the number of companies with work-at-home programs or policy guidelines remains smallAccording to the passage, what is the most important tool for a telecommuter to work at home?

Xem chi tiết 1.3 K lượt xem 5 năm trước

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.    The ruined temples of Angkor are perhaps one of the most impressive Seven Wonders of the World. Located in modern day Cambodia near Lake Tonle Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire for the ninth to the fifteenth century. The ruins of Angkor are documented as some of the most impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water. One possible explanation for the downfall of the Khmer Empire has to do with the inhabitant’s irrigation system. The temples and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding paddies and farmland during the course of the year. Farmers were completely dependent on the water for water crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production. Scientists speculate that toward the end of the Khmer Empire the hydraulic system of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food more quickly and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and loss of water led to decrease in the food supply. With the less food available, the people of Angkor slowly began to migrate to other parts of Cambodia, thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.The passage preceding most likely discusses ________.  

Xem chi tiết 1 K lượt xem 5 năm trước

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 44 to 50.         Insects’ lives are very short and they have many enemies, but they must survive long enough to breed and perpetuate their kind. The less insect-like they look, the better their chance of survival. To look "inedible" by resembling or imitating plants is a deception widely practiced by insects. Mammals rarely use this type of camouflage, but many fish and invertebrates do.     The stick caterpillar is well named. It is hardly distinguishable from a brown or green twig. This caterpillar is quite common and can be found almost anywhere in North America. It is also called "measuring worm" or "inchworm." It walks by arching its body, then stretching out and grasping the branch with its front feet then looping its body again to bring the hind feet forward. When danger threatens, the stick caterpillar stretches its body away from the branch at an angle and remains rigid and still, like a twig, until the danger has passed.Walking sticks, or stick insects, do not have to assume a rigid, twig-like pose to find protection; they look like inedible twigs in any position. There are many kinds of walking sticks, ranging in size from the few inches of the North American variety to some tropical species that may be over a foot long. When at rest their front legs are stretched out, heightening their camouflage. Some of the tropical species are adorned with spines or ridges, imitating the thorny bushes or trees in which they live.     Leaves also seem to be a favorite object for insects to imitate. Many butterflies can suddenly disappear from view by folding their wings and sitting quietly among the foliage that they resemble.When in the passage does the author describe the habitat of tropical stick insects?

Xem chi tiết 1.1 K lượt xem 5 năm trước