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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 word or phrase that best fits each of the numbered blanks from 35 to 44.         Reference books are not designed to be read from the first page to the last but rather to be consulted to answer the questions and provide both general and specific pieces of information.         One of the most (35) ______ used reference books is a dictionary, which provides information about words. It lists meanings and spellings, (36) ______ how a word is pronounced, gives (37) ______ of how it is used, may reveal its origins and also lists synonyms and (38) ______. To help you find the words faster, there are guide words at the top of each page showing the first and last words on that page and of course it (39) ______ to know the alphabet!         There may be numerous special sections at the back with (40) ______ about famous people and places, lists of dates and scientific names, etc. There is usually a section at the front (41) ______ how to use the dictionary, which includes the special abbreviations or signs.         An atlas is also a reference book and (42) ______ charts, tables and geographical facts, as well as maps. Political maps locate countries and cities, physical maps show the formation of the land with its mountains and valleys, and economic maps show industries and agriculture. To find a specific place, you need to look in the (43) ______ at the back of the atlas and the exact position on the map. There are numerous map (44) ______ that you need to know in order to be able to read a map-almost like a special language-and these are explained at the front of the atlas.Điền vào ô 35

Xem chi tiết 447 lượt xem 6 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.If we believe that clothing has to do with covering the body, and costume with the choice of a particular form of garment for a particular use, then we can say that clothing depends primarily on such physical conditions as climate, health, and textile manufacture, whereas costume reflects social factors such as religious beliefs, aesthetics, personal status, and the wish to be distinguished from or to emulate our fellows.The ancient Greeks and the Chinese believed that we first covered our bodies for some physical reasons such as protecting ourselves from the elements. Ethnologists and psychologists have invoked psychological reasons: modesty in the case of the ancients, and taboo, magical influence and the desire to please for the moderns.In early history, costume must have fulfilled a function beyond that of simple utility, perhaps through some magical significance, investing primitive man with the attributes of other creatures. Ornaments identified the wearer with animals, gods, heroes or other men. This identification remains symbolic in more sophisticated societies. We should bear in mind that the theater has its distant origins in sacred performances, and in all periods children at play have worn disguises, so as to adapt gradually to adult life.Costume helped inspire fear or impose authority. For a chieftain, costume embodied attributes expressing his power, while a warrior’s costume enhanced his physical superiority and suggested he was superhuman. In more recent times, professional or administrative costume has been devised to distinguish the wearer and to express personal or delegated authority; this purpose is seen clearly in the judge’s robes and the police officer’s uniform. Costume denotes power, and since power is usually equated with wealth, costume came to be an expression of social caste and material prosperity. Military uniform denotes rank and is intended to intimidate, to protect the body and to express membership in a group. At the bottom of the scale, there are such compulsory costumes as the convict’s uniform. Finally, costume can possess a religious significance that combines various elements: an actual or symbolic identification with a god, the desire to express this in earthly life, and the desire to enhance the wearer’s position of respect. The word “denotes” in bold in the last paragraph is closest in meaning to _____.

Xem chi tiết 342 lượt xem 6 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.If we believe that clothing has to do with covering the body, and costume with the choice of a particular form of garment for a particular use, then we can say that clothing depends primarily on such physical conditions as climate, health, and textile manufacture, whereas costume reflects social factors such as religious beliefs, aesthetics, personal status, and the wish to be distinguished from or to emulate our fellows.The ancient Greeks and the Chinese believed that we first covered our bodies for some physical reasons such as protecting ourselves from the elements. Ethnologists and psychologists have invoked psychological reasons: modesty in the case of the ancients, and taboo, magical influence and the desire to please for the moderns.In early history, costume must have fulfilled a function beyond that of simple utility, perhaps through some magical significance, investing primitive man with the attributes of other creatures. Ornaments identified the wearer with animals, gods, heroes or other men. This identification remains symbolic in more sophisticated societies. We should bear in mind that the theater has its distant origins in sacred performances, and in all periods children at play have worn disguises, so as to adapt gradually to adult life.Costume helped inspire fear or impose authority. For a chieftain, costume embodied attributes expressing his power, while a warrior’s costume enhanced his physical superiority and suggested he was superhuman. In more recent times, professional or administrative costume has been devised to distinguish the wearer and to express personal or delegated authority; this purpose is seen clearly in the judge’s robes and the police officer’s uniform. Costume denotes power, and since power is usually equated with wealth, costume came to be an expression of social caste and material prosperity. Military uniform denotes rank and is intended to intimidate, to protect the body and to express membership in a group. At the bottom of the scale, there are such compulsory costumes as the convict’s uniform. Finally, costume can possess a religious significance that combines various elements: an actual or symbolic identification with a god, the desire to express this in earthly life, and the desire to enhance the wearer’s position of respect. Which of the following would most likely NOT be reflected in a person’s costume, as it is defined in the passage?

Xem chi tiết 835 lượt xem 6 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.If we believe that clothing has to do with covering the body, and costume with the choice of a particular form of garment for a particular use, then we can say that clothing depends primarily on such physical conditions as climate, health, and textile manufacture, whereas costume reflects social factors such as religious beliefs, aesthetics, personal status, and the wish to be distinguished from or to emulate our fellows.The ancient Greeks and the Chinese believed that we first covered our bodies for some physical reasons such as protecting ourselves from the elements. Ethnologists and psychologists have invoked psychological reasons: modesty in the case of the ancients, and taboo, magical influence and the desire to please for the moderns.In early history, costume must have fulfilled a function beyond that of simple utility, perhaps through some magical significance, investing primitive man with the attributes of other creatures. Ornaments identified the wearer with animals, gods, heroes or other men. This identification remains symbolic in more sophisticated societies. We should bear in mind that the theater has its distant origins in sacred performances, and in all periods children at play have worn disguises, so as to adapt gradually to adult life.Costume helped inspire fear or impose authority. For a chieftain, costume embodied attributes expressing his power, while a warrior’s costume enhanced his physical superiority and suggested he was superhuman. In more recent times, professional or administrative costume has been devised to distinguish the wearer and to express personal or delegated authority; this purpose is seen clearly in the judge’s robes and the police officer’s uniform. Costume denotes power, and since power is usually equated with wealth, costume came to be an expression of social caste and material prosperity. Military uniform denotes rank and is intended to intimidate, to protect the body and to express membership in a group. At the bottom of the scale, there are such compulsory costumes as the convict’s uniform. Finally, costume can possess a religious significance that combines various elements: an actual or symbolic identification with a god, the desire to express this in earthly life, and the desire to enhance the wearer’s position of respect. The word “scale” in bold in the last paragraph refers to _____.

Xem chi tiết 379 lượt xem 6 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.If we believe that clothing has to do with covering the body, and costume with the choice of a particular form of garment for a particular use, then we can say that clothing depends primarily on such physical conditions as climate, health, and textile manufacture, whereas costume reflects social factors such as religious beliefs, aesthetics, personal status, and the wish to be distinguished from or to emulate our fellows.The ancient Greeks and the Chinese believed that we first covered our bodies for some physical reasons such as protecting ourselves from the elements. Ethnologists and psychologists have invoked psychological reasons: modesty in the case of the ancients, and taboo, magical influence and the desire to please for the moderns.In early history, costume must have fulfilled a function beyond that of simple utility, perhaps through some magical significance, investing primitive man with the attributes of other creatures. Ornaments identified the wearer with animals, gods, heroes or other men. This identification remains symbolic in more sophisticated societies. We should bear in mind that the theater has its distant origins in sacred performances, and in all periods children at play have worn disguises, so as to adapt gradually to adult life.Costume helped inspire fear or impose authority. For a chieftain, costume embodied attributes expressing his power, while a warrior’s costume enhanced his physical superiority and suggested he was superhuman. In more recent times, professional or administrative costume has been devised to distinguish the wearer and to express personal or delegated authority; this purpose is seen clearly in the judge’s robes and the police officer’s uniform. Costume denotes power, and since power is usually equated with wealth, costume came to be an expression of social caste and material prosperity. Military uniform denotes rank and is intended to intimidate, to protect the body and to express membership in a group. At the bottom of the scale, there are such compulsory costumes as the convict’s uniform. Finally, costume can possess a religious significance that combines various elements: an actual or symbolic identification with a god, the desire to express this in earthly life, and the desire to enhance the wearer’s position of respect. It can be inferred from paragraph 3 that _____.

Xem chi tiết 536 lượt xem 6 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.If we believe that clothing has to do with covering the body, and costume with the choice of a particular form of garment for a particular use, then we can say that clothing depends primarily on such physical conditions as climate, health, and textile manufacture, whereas costume reflects social factors such as religious beliefs, aesthetics, personal status, and the wish to be distinguished from or to emulate our fellows.The ancient Greeks and the Chinese believed that we first covered our bodies for some physical reasons such as protecting ourselves from the elements. Ethnologists and psychologists have invoked psychological reasons: modesty in the case of the ancients, and taboo, magical influence and the desire to please for the moderns.In early history, costume must have fulfilled a function beyond that of simple utility, perhaps through some magical significance, investing primitive man with the attributes of other creatures. Ornaments identified the wearer with animals, gods, heroes or other men. This identification remains symbolic in more sophisticated societies. We should bear in mind that the theater has its distant origins in sacred performances, and in all periods children at play have worn disguises, so as to adapt gradually to adult life.Costume helped inspire fear or impose authority. For a chieftain, costume embodied attributes expressing his power, while a warrior’s costume enhanced his physical superiority and suggested he was superhuman. In more recent times, professional or administrative costume has been devised to distinguish the wearer and to express personal or delegated authority; this purpose is seen clearly in the judge’s robes and the police officer’s uniform. Costume denotes power, and since power is usually equated with wealth, costume came to be an expression of social caste and material prosperity. Military uniform denotes rank and is intended to intimidate, to protect the body and to express membership in a group. At the bottom of the scale, there are such compulsory costumes as the convict’s uniform. Finally, costume can possess a religious significance that combines various elements: an actual or symbolic identification with a god, the desire to express this in earthly life, and the desire to enhance the wearer’s position of respect. The word “investing” in bold in paragraph 3 is closest in meaning to ______.

Xem chi tiết 307 lượt xem 6 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.If we believe that clothing has to do with covering the body, and costume with the choice of a particular form of garment for a particular use, then we can say that clothing depends primarily on such physical conditions as climate, health, and textile manufacture, whereas costume reflects social factors such as religious beliefs, aesthetics, personal status, and the wish to be distinguished from or to emulate our fellows.The ancient Greeks and the Chinese believed that we first covered our bodies for some physical reasons such as protecting ourselves from the elements. Ethnologists and psychologists have invoked psychological reasons: modesty in the case of the ancients, and taboo, magical influence and the desire to please for the moderns.In early history, costume must have fulfilled a function beyond that of simple utility, perhaps through some magical significance, investing primitive man with the attributes of other creatures. Ornaments identified the wearer with animals, gods, heroes or other men. This identification remains symbolic in more sophisticated societies. We should bear in mind that the theater has its distant origins in sacred performances, and in all periods children at play have worn disguises, so as to adapt gradually to adult life.Costume helped inspire fear or impose authority. For a chieftain, costume embodied attributes expressing his power, while a warrior’s costume enhanced his physical superiority and suggested he was superhuman. In more recent times, professional or administrative costume has been devised to distinguish the wearer and to express personal or delegated authority; this purpose is seen clearly in the judge’s robes and the police officer’s uniform. Costume denotes power, and since power is usually equated with wealth, costume came to be an expression of social caste and material prosperity. Military uniform denotes rank and is intended to intimidate, to protect the body and to express membership in a group. At the bottom of the scale, there are such compulsory costumes as the convict’s uniform. Finally, costume can possess a religious significance that combines various elements: an actual or symbolic identification with a god, the desire to express this in earthly life, and the desire to enhance the wearer’s position of respect. Psychological reasons for wearing garments include _____.

Xem chi tiết 726 lượt xem 6 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.If we believe that clothing has to do with covering the body, and costume with the choice of a particular form of garment for a particular use, then we can say that clothing depends primarily on such physical conditions as climate, health, and textile manufacture, whereas costume reflects social factors such as religious beliefs, aesthetics, personal status, and the wish to be distinguished from or to emulate our fellows.The ancient Greeks and the Chinese believed that we first covered our bodies for some physical reasons such as protecting ourselves from the elements. Ethnologists and psychologists have invoked psychological reasons: modesty in the case of the ancients, and taboo, magical influence and the desire to please for the moderns.In early history, costume must have fulfilled a function beyond that of simple utility, perhaps through some magical significance, investing primitive man with the attributes of other creatures. Ornaments identified the wearer with animals, gods, heroes or other men. This identification remains symbolic in more sophisticated societies. We should bear in mind that the theater has its distant origins in sacred performances, and in all periods children at play have worn disguises, so as to adapt gradually to adult life.Costume helped inspire fear or impose authority. For a chieftain, costume embodied attributes expressing his power, while a warrior’s costume enhanced his physical superiority and suggested he was superhuman. In more recent times, professional or administrative costume has been devised to distinguish the wearer and to express personal or delegated authority; this purpose is seen clearly in the judge’s robes and the police officer’s uniform. Costume denotes power, and since power is usually equated with wealth, costume came to be an expression of social caste and material prosperity. Military uniform denotes rank and is intended to intimidate, to protect the body and to express membership in a group. At the bottom of the scale, there are such compulsory costumes as the convict’s uniform. Finally, costume can possess a religious significance that combines various elements: an actual or symbolic identification with a god, the desire to express this in earthly life, and the desire to enhance the wearer’s position of respect. What is the purpose of paragraph 1?

Xem chi tiết 388 lượt xem 6 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.If we believe that clothing has to do with covering the body, and costume with the choice of a particular form of garment for a particular use, then we can say that clothing depends primarily on such physical conditions as climate, health, and textile manufacture, whereas costume reflects social factors such as religious beliefs, aesthetics, personal status, and the wish to be distinguished from or to emulate our fellows.The ancient Greeks and the Chinese believed that we first covered our bodies for some physical reasons such as protecting ourselves from the elements. Ethnologists and psychologists have invoked psychological reasons: modesty in the case of the ancients, and taboo, magical influence and the desire to please for the moderns.In early history, costume must have fulfilled a function beyond that of simple utility, perhaps through some magical significance, investing primitive man with the attributes of other creatures. Ornaments identified the wearer with animals, gods, heroes or other men. This identification remains symbolic in more sophisticated societies. We should bear in mind that the theater has its distant origins in sacred performances, and in all periods children at play have worn disguises, so as to adapt gradually to adult life.Costume helped inspire fear or impose authority. For a chieftain, costume embodied attributes expressing his power, while a warrior’s costume enhanced his physical superiority and suggested he was superhuman. In more recent times, professional or administrative costume has been devised to distinguish the wearer and to express personal or delegated authority; this purpose is seen clearly in the judge’s robes and the police officer’s uniform. Costume denotes power, and since power is usually equated with wealth, costume came to be an expression of social caste and material prosperity. Military uniform denotes rank and is intended to intimidate, to protect the body and to express membership in a group. At the bottom of the scale, there are such compulsory costumes as the convict’s uniform. Finally, costume can possess a religious significance that combines various elements: an actual or symbolic identification with a god, the desire to express this in earthly life, and the desire to enhance the wearer’s position of respect. Why does the author mention the police officer’s uniform in the last paragraph?

Xem chi tiết 749 lượt xem 6 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.If we believe that clothing has to do with covering the body, and costume with the choice of a particular form of garment for a particular use, then we can say that clothing depends primarily on such physical conditions as climate, health, and textile manufacture, whereas costume reflects social factors such as religious beliefs, aesthetics, personal status, and the wish to be distinguished from or to emulate our fellows.The ancient Greeks and the Chinese believed that we first covered our bodies for some physical reasons such as protecting ourselves from the elements. Ethnologists and psychologists have invoked psychological reasons: modesty in the case of the ancients, and taboo, magical influence and the desire to please for the moderns.In early history, costume must have fulfilled a function beyond that of simple utility, perhaps through some magical significance, investing primitive man with the attributes of other creatures. Ornaments identified the wearer with animals, gods, heroes or other men. This identification remains symbolic in more sophisticated societies. We should bear in mind that the theater has its distant origins in sacred performances, and in all periods children at play have worn disguises, so as to adapt gradually to adult life.Costume helped inspire fear or impose authority. For a chieftain, costume embodied attributes expressing his power, while a warrior’s costume enhanced his physical superiority and suggested he was superhuman. In more recent times, professional or administrative costume has been devised to distinguish the wearer and to express personal or delegated authority; this purpose is seen clearly in the judge’s robes and the police officer’s uniform. Costume denotes power, and since power is usually equated with wealth, costume came to be an expression of social caste and material prosperity. Military uniform denotes rank and is intended to intimidate, to protect the body and to express membership in a group. At the bottom of the scale, there are such compulsory costumes as the convict’s uniform. Finally, costume can possess a religious significance that combines various elements: an actual or symbolic identification with a god, the desire to express this in earthly life, and the desire to enhance the wearer’s position of respect. The passage mainly discusses costume in terms of its _____.

Xem chi tiết 863 lượt xem 6 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.If we believe that clothing has to do with covering the body, and costume with the choice of a particular form of garment for a particular use, then we can say that clothing depends primarily on such physical conditions as climate, health, and textile manufacture, whereas costume reflects social factors such as religious beliefs, aesthetics, personal status, and the wish to be distinguished from or to emulate our fellows.The ancient Greeks and the Chinese believed that we first covered our bodies for some physical reasons such as protecting ourselves from the elements. Ethnologists and psychologists have invoked psychological reasons: modesty in the case of the ancients, and taboo, magical influence and the desire to please for the moderns.In early history, costume must have fulfilled a function beyond that of simple utility, perhaps through some magical significance, investing primitive man with the attributes of other creatures. Ornaments identified the wearer with animals, gods, heroes or other men. This identification remains symbolic in more sophisticated societies. We should bear in mind that the theater has its distant origins in sacred performances, and in all periods children at play have worn disguises, so as to adapt gradually to adult life.Costume helped inspire fear or impose authority. For a chieftain, costume embodied attributes expressing his power, while a warrior’s costume enhanced his physical superiority and suggested he was superhuman. In more recent times, professional or administrative costume has been devised to distinguish the wearer and to express personal or delegated authority; this purpose is seen clearly in the judge’s robes and the police officer’s uniform. Costume denotes power, and since power is usually equated with wealth, costume came to be an expression of social caste and material prosperity. Military uniform denotes rank and is intended to intimidate, to protect the body and to express membership in a group. At the bottom of the scale, there are such compulsory costumes as the convict’s uniform. Finally, costume can possess a religious significance that combines various elements: an actual or symbolic identification with a god, the desire to express this in earthly life, and the desire to enhance the wearer’s position of respect. The word “ornaments” in bold in paragraph 3 is closest in meaning to _____.

Xem chi tiết 752 lượt xem 6 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.Farming has come a long way since the days of horse-drawn plows, and now it’s heading swiftly into the twenty-first century. Research at Indiana’s Purdue University uses the Navistar Global Positioning System (GPS) to help increase crop yields and reduce chemical use. GPS uses satellite signals to determine location within inches. Under Purdue’s scheme, a farmer out in the field would use a GPS receiver mounted on his vehicle to pinpoint his position. A computer linked to the receiver and programmed with the field’s soil conditions – which can vary widely from one area to another – would tell the farmer precisely where the plant and how much pesticide and fertilizer to use at that specific site. “Currently the number one cost to the famer is chemicals” say Gary Kurtz, a Professor of Agriculture Engineering at Purdue. Site-specific farming can increase yields while reducing chemical use.But the cost of this new technology may be too high for the small farmer. The cost of taking and testing soil samples every few feet in a farmer’s field is a limiting factor. Soil tests can run $7 to  $8 each. Mark Morgan, assistant Professor of Agriculture Engineering at Purdue and his graduate assistants are working on a sensor to be attached to the front of a farm implement, enabling the farmer to perform his own soil tests on the go. According to the passage, the phrase “on the go” has the meaning of ______.

Xem chi tiết 492 lượt xem 6 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.Farming has come a long way since the days of horse-drawn plows, and now it’s heading swiftly into the twenty-first century. Research at Indiana’s Purdue University uses the Navistar Global Positioning System (GPS) to help increase crop yields and reduce chemical use. GPS uses satellite signals to determine location within inches. Under Purdue’s scheme, a farmer out in the field would use a GPS receiver mounted on his vehicle to pinpoint his position. A computer linked to the receiver and programmed with the field’s soil conditions – which can vary widely from one area to another – would tell the farmer precisely where the plant and how much pesticide and fertilizer to use at that specific site. “Currently the number one cost to the famer is chemicals” say Gary Kurtz, a Professor of Agriculture Engineering at Purdue. Site-specific farming can increase yields while reducing chemical use.But the cost of this new technology may be too high for the small farmer. The cost of taking and testing soil samples every few feet in a farmer’s field is a limiting factor. Soil tests can run $7 to  $8 each. Mark Morgan, assistant Professor of Agriculture Engineering at Purdue and his graduate assistants are working on a sensor to be attached to the front of a farm implement, enabling the farmer to perform his own soil tests on the go. It can be inferred from the passage that a farmer would use his computer to ______.

Xem chi tiết 396 lượt xem 6 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.Farming has come a long way since the days of horse-drawn plows, and now it’s heading swiftly into the twenty-first century. Research at Indiana’s Purdue University uses the Navistar Global Positioning System (GPS) to help increase crop yields and reduce chemical use. GPS uses satellite signals to determine location within inches. Under Purdue’s scheme, a farmer out in the field would use a GPS receiver mounted on his vehicle to pinpoint his position. A computer linked to the receiver and programmed with the field’s soil conditions – which can vary widely from one area to another – would tell the farmer precisely where the plant and how much pesticide and fertilizer to use at that specific site. “Currently the number one cost to the famer is chemicals” say Gary Kurtz, a Professor of Agriculture Engineering at Purdue. Site-specific farming can increase yields while reducing chemical use.But the cost of this new technology may be too high for the small farmer. The cost of taking and testing soil samples every few feet in a farmer’s field is a limiting factor. Soil tests can run $7 to  $8 each. Mark Morgan, assistant Professor of Agriculture Engineering at Purdue and his graduate assistants are working on a sensor to be attached to the front of a farm implement, enabling the farmer to perform his own soil tests on the go. The word yields is closest in meaning to _______.

Xem chi tiết 333 lượt xem 6 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.Farming has come a long way since the days of horse-drawn plows, and now it’s heading swiftly into the twenty-first century. Research at Indiana’s Purdue University uses the Navistar Global Positioning System (GPS) to help increase crop yields and reduce chemical use. GPS uses satellite signals to determine location within inches. Under Purdue’s scheme, a farmer out in the field would use a GPS receiver mounted on his vehicle to pinpoint his position. A computer linked to the receiver and programmed with the field’s soil conditions – which can vary widely from one area to another – would tell the farmer precisely where the plant and how much pesticide and fertilizer to use at that specific site. “Currently the number one cost to the famer is chemicals” say Gary Kurtz, a Professor of Agriculture Engineering at Purdue. Site-specific farming can increase yields while reducing chemical use.But the cost of this new technology may be too high for the small farmer. The cost of taking and testing soil samples every few feet in a farmer’s field is a limiting factor. Soil tests can run $7 to  $8 each. Mark Morgan, assistant Professor of Agriculture Engineering at Purdue and his graduate assistants are working on a sensor to be attached to the front of a farm implement, enabling the farmer to perform his own soil tests on the go. The word it’s  refers to _______.

Xem chi tiết 373 lượt xem 6 năm trước