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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 25)

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 36 to 42.  Homing pigeons are placed in a training program from about the time they are twenty-eight days of age. They are taught to enter the loft through a trap and to exercise above and around the loft, and gradually they are taken away for short distances in wicker baskets and released. They are then expected to find their way home in the shortest possible time.          In their training flights or in actual races, the birds are taken to prearranged distant points and released to find their way back to their own lofts. Once the birds are liberated, their owners, who are standing by at the home lofts, anxiously watch the sky for the return of their entries. Since time is of the essence, the speed with which the birds can be induced to enter the loft trap may make the difference between gaining a win or a second place.          The head of a homing pigeon is comparatively small, but its brain is one quarter larger than that of the ordinary pigeon. The homing pigeon is very intelligent and will persevere to the point of stubbornness; some have been known to fly a hundred miles off course to avoid a storm.    Some homing pigeon experts claim that this bird is gifted with a form of built-in radar that helps it find its own loft after hours of flight, for hidden under the head feathers are two very sensitive ears, while the sharp, prominent eyes can see great distances in daytime.Why do homing pigeons fly home? They are not unique in this inherent skill: it is found in most migratory birds, in bees, ants, toads, and even turtles, which have been known to travel hundreds of miles to return to their homes. But in the animal world, the homing pigeon alone can be trusted with its freedom and trained to carry out the missions that people demandIn paragraph 2, when the author states that the owners "anxiously watch the sky" there is the implication that the owners _______________________.

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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 25)

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 36 to 42.  Homing pigeons are placed in a training program from about the time they are twenty-eight days of age. They are taught to enter the loft through a trap and to exercise above and around the loft, and gradually they are taken away for short distances in wicker baskets and released. They are then expected to find their way home in the shortest possible time.          In their training flights or in actual races, the birds are taken to prearranged distant points and released to find their way back to their own lofts. Once the birds are liberated, their owners, who are standing by at the home lofts, anxiously watch the sky for the return of their entries. Since time is of the essence, the speed with which the birds can be induced to enter the loft trap may make the difference between gaining a win or a second place.          The head of a homing pigeon is comparatively small, but its brain is one quarter larger than that of the ordinary pigeon. The homing pigeon is very intelligent and will persevere to the point of stubbornness; some have been known to fly a hundred miles off course to avoid a storm.    Some homing pigeon experts claim that this bird is gifted with a form of built-in radar that helps it find its own loft after hours of flight, for hidden under the head feathers are two very sensitive ears, while the sharp, prominent eyes can see great distances in daytime.Why do homing pigeons fly home? They are not unique in this inherent skill: it is found in most migratory birds, in bees, ants, toads, and even turtles, which have been known to travel hundreds of miles to return to their homes. But in the animal world, the homing pigeon alone can be trusted with its freedom and trained to carry out the missions that people demandAccording to the passage, what happens to homing pigeons when they are about a month old?

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P8)

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.The United Nations Children’s Fund (UNICEF), originally known (26)______the United Nations International Children’s Emergency Fund, was created by the United Nations General Assembly on December 11th , 1946 to provide emergency food and healthcare to children and mothers in countries that had been devastated by World War II. The Polish physician Ludwik Rajchman is widely regarded as the (27)______of UNICEF and served as its first chairman from 1946 to 1950, when he had to flee the United States in the wake of McCarthyism. Rajchman is to this day the only person that served as UNICEF’s Chairman for longer than 2 years. On Rajchman’s suggestion, the American Maurice Pate was appointed its first executive director, serving from 1947 until his death in 1965. In 1950, UNICEF’s mandate was extended to address the long-term needs of children and women in developing countries everywhere. In 1953, it (28)______a permanent part of the United Nations System, and the words "international" and "emergency" were dropped from the organization's name, though it retained the original acronym, "UNICEF".UNICEF (29)______ on contributions from governments and private donors. UNICEF’s total income for 2015 was more than five billion dollars. Governments contribute two-thirds of the organization’s resources. Private groups and individuals contribute the rest through national committees. It is estimated that 92 per cent of UNICEF revenue is distributed to program services. UNICEF’s programs emphasize developing community-level services to (30)______ the health and well-being of children. UNICEF was awarded the Nobel Peace Prize in 1965 and the Prince of Asturias Award of Concord in 2006Điền ô 30

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P8)

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. The United Nations Children’s Fund (UNICEF), originally known (26)______the United Nations International Children’s Emergency Fund, was created by the United Nations General Assembly on December 11th , 1946 to provide emergency food and healthcare to children and mothers in countries that had been devastated by World War II. The Polish physician Ludwik Rajchman is widely regarded as the (27)______of UNICEF and served as its first chairman from 1946 to 1950, when he had to flee the United States in the wake of McCarthyism. Rajchman is to this day the only person that served as UNICEF’s Chairman for longer than 2 years. On Rajchman’s suggestion, the American Maurice Pate was appointed its first executive director, serving from 1947 until his death in 1965. In 1950, UNICEF’s mandate was extended to address the long-term needs of children and women in developing countries everywhere. In 1953, it (28)______a permanent part of the United Nations System, and the words "international" and "emergency" were dropped from the organization's name, though it retained the original acronym, "UNICEF". UNICEF (29)______ on contributions from governments and private donors. UNICEF’s total income for 2015 was more than five billion dollars. Governments contribute two-thirds of the organization’s resources. Private groups and individuals contribute the rest through national committees. It is estimated that 92 per cent of UNICEF revenue is distributed to program services. UNICEF’s programs emphasize developing community-level services to (30)______ the health and well-being of children. UNICEF was awarded the Nobel Peace Prize in 1965 and the Prince of Asturias Award of Concord in 2006Điền ô 29

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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 25)

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 36 to 42.  Homing pigeons are placed in a training program from about the time they are twenty-eight days of age. They are taught to enter the loft through a trap and to exercise above and around the loft, and gradually they are taken away for short distances in wicker baskets and released. They are then expected to find their way home in the shortest possible time.          In their training flights or in actual races, the birds are taken to prearranged distant points and released to find their way back to their own lofts. Once the birds are liberated, their owners, who are standing by at the home lofts, anxiously watch the sky for the return of their entries. Since time is of the essence, the speed with which the birds can be induced to enter the loft trap may make the difference between gaining a win or a second place.          The head of a homing pigeon is comparatively small, but its brain is one quarter larger than that of the ordinary pigeon. The homing pigeon is very intelligent and will persevere to the point of stubbornness; some have been known to fly a hundred miles off course to avoid a storm.    Some homing pigeon experts claim that this bird is gifted with a form of built-in radar that helps it find its own loft after hours of flight, for hidden under the head feathers are two very sensitive ears, while the sharp, prominent eyes can see great distances in daytime.Why do homing pigeons fly home? They are not unique in this inherent skill: it is found in most migratory birds, in bees, ants, toads, and even turtles, which have been known to travel hundreds of miles to return to their homes. But in the animal world, the homing pigeon alone can be trusted with its freedom and trained to carry out the missions that people demandWhat is the purpose of the passage?

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Đề thi thử THPTGQ môn Toán cực cực hay có lời giải chi tiết(Đề 7)

Đường cong trong hình bên là đồ thị của một hàm số trong bốn hàm số được liệt kê ở bốn phương án A, B, C, D dưới đây. Hỏi hàm số đó là hàm số nào? 

Toán Tốt nghiệp THPT
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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P8)

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.The United Nations Children’s Fund (UNICEF), originally known (26)______the United Nations International Children’s Emergency Fund, was created by the United Nations General Assembly on December 11th , 1946 to provide emergency food and healthcare to children and mothers in countries that had been devastated by World War II. The Polish physician Ludwik Rajchman is widely regarded as the (27)______of UNICEF and served as its first chairman from 1946 to 1950, when he had to flee the United States in the wake of McCarthyism. Rajchman is to this day the only person that served as UNICEF’s Chairman for longer than 2 years. On Rajchman’s suggestion, the American Maurice Pate was appointed its first executive director, serving from 1947 until his death in 1965. In 1950, UNICEF’s mandate was extended to address the long-term needs of children and women in developing countries everywhere. In 1953, it (28)______a permanent part of the United Nations System, and the words "international" and "emergency" were dropped from the organization's name, though it retained the original acronym, "UNICEF".UNICEF (29)______ on contributions from governments and private donors. UNICEF’s total income for 2015 was more than five billion dollars. Governments contribute two-thirds of the organization’s resources. Private groups and individuals contribute the rest through national committees. It is estimated that 92 per cent of UNICEF revenue is distributed to program services. UNICEF’s programs emphasize developing community-level services to (30)______ the health and well-being of children. UNICEF was awarded the Nobel Peace Prize in 1965 and the Prince of Asturias Award of Concord in 2006Điền ô 28

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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 25)

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 31 to 35.   Public awareness of the value of recycling materials such (31)___________ plastic, paper, and glass is increasing daily in all corners of the globe. In some countries these efforts are being (32)___________ by the local governments and in others, by individuals. Participation in these programs is at an all-time high. In the small town of Truro in eastern Massachusetts, for example, space in the local landfill has run out; therefore, residents have had to think of new ways to (33)___________ of their trash. With no room for items such as newspaper, bottles, and old lumber at the land fill, local residents have come up with many (34)___________ programs to recycle and/ or reuse what was once thought of as only trash. For instance, yard waste such as leaves and grass which used to be thrown in the landfill is now broken down and made into compost used by local people as fertilizer in their gardens. In addition, (35)___________ plastics, newspapers, bottles and cans are sold to a recycling company, thereby bringing in revenue for the town.Điền vào ô số 35

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P8)

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.The United Nations Children’s Fund (UNICEF), originally known (26)______the United Nations International Children’s Emergency Fund, was created by the United Nations General Assembly on December 11th , 1946 to provide emergency food and healthcare to children and mothers in countries that had been devastated by World War II. The Polish physician Ludwik Rajchman is widely regarded as the (27)______of UNICEF and served as its first chairman from 1946 to 1950, when he had to flee the United States in the wake of McCarthyism. Rajchman is to this day the only person that served as UNICEF’s Chairman for longer than 2 years. On Rajchman’s suggestion, the American Maurice Pate was appointed its first executive director, serving from 1947 until his death in 1965. In 1950, UNICEF’s mandate was extended to address the long-term needs of children and women in developing countries everywhere. In 1953, it (28)______a permanent part of the United Nations System, and the words "international" and "emergency" were dropped from the organization's name, though it retained the original acronym, "UNICEF".UNICEF (29)______ on contributions from governments and private donors. UNICEF’s total income for 2015 was more than five billion dollars. Governments contribute two-thirds of the organization’s resources. Private groups and individuals contribute the rest through national committees. It is estimated that 92 per cent of UNICEF revenue is distributed to program services. UNICEF’s programs emphasize developing community-level services to (30)______ the health and well-being of children. UNICEF was awarded the Nobel Peace Prize in 1965 and the Prince of Asturias Award of Concord in 2006Điền ô 27

Tiếng Anh Tốt nghiệp THPT
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 25)

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 31 to 35.   Public awareness of the value of recycling materials such (31)___________ plastic, paper, and glass is increasing daily in all corners of the globe. In some countries these efforts are being (32)___________ by the local governments and in others, by individuals. Participation in these programs is at an all-time high. In the small town of Truro in eastern Massachusetts, for example, space in the local landfill has run out; therefore, residents have had to think of new ways to (33)___________ of their trash. With no room for items such as newspaper, bottles, and old lumber at the land fill, local residents have come up with many (34)___________ programs to recycle and/ or reuse what was once thought of as only trash. For instance, yard waste such as leaves and grass which used to be thrown in the landfill is now broken down and made into compost used by local people as fertilizer in their gardens. In addition, (35)___________ plastics, newspapers, bottles and cans are sold to a recycling company, thereby bringing in revenue for the town.Điền vào ô số 34

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P8)

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. The United Nations Children’s Fund (UNICEF), originally known (26)______the United Nations International Children’s Emergency Fund, was created by the United Nations General Assembly on December 11th , 1946 to provide emergency food and healthcare to children and mothers in countries that had been devastated by World War II. The Polish physician Ludwik Rajchman is widely regarded as the (27)______of UNICEF and served as its first chairman from 1946 to 1950, when he had to flee the United States in the wake of McCarthyism. Rajchman is to this day the only person that served as UNICEF’s Chairman for longer than 2 years. On Rajchman’s suggestion, the American Maurice Pate was appointed its first executive director, serving from 1947 until his death in 1965. In 1950, UNICEF’s mandate was extended to address the long-term needs of children and women in developing countries everywhere. In 1953, it (28)______a permanent part of the United Nations System, and the words "international" and "emergency" were dropped from the organization's name, though it retained the original acronym, "UNICEF". UNICEF (29)______ on contributions from governments and private donors. UNICEF’s total income for 2015 was more than five billion dollars. Governments contribute two-thirds of the organization’s resources. Private groups and individuals contribute the rest through national committees. It is estimated that 92 per cent of UNICEF revenue is distributed to program services. UNICEF’s programs emphasize developing community-level services to (30)______ the health and well-being of children. UNICEF was awarded the Nobel Peace Prize in 1965 and the Prince of Asturias Award of Concord in 2006Điền ô 26

Tiếng Anh Tốt nghiệp THPT
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 25)

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 31 to 35.   Public awareness of the value of recycling materials such (31)___________ plastic, paper, and glass is increasing daily in all corners of the globe. In some countries these efforts are being (32)___________ by the local governments and in others, by individuals. Participation in these programs is at an all-time high. In the small town of Truro in eastern Massachusetts, for example, space in the local landfill has run out; therefore, residents have had to think of new ways to (33)___________ of their trash. With no room for items such as newspaper, bottles, and old lumber at the land fill, local residents have come up with many (34)___________ programs to recycle and/ or reuse what was once thought of as only trash. For instance, yard waste such as leaves and grass which used to be thrown in the landfill is now broken down and made into compost used by local people as fertilizer in their gardens. In addition, (35)___________ plastics, newspapers, bottles and cans are sold to a recycling company, thereby bringing in revenue for the town.Điền vào ô số 33

Tiếng Anh Tốt nghiệp THPT
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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 25)

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 31 to 35.   Public awareness of the value of recycling materials such (31)___________ plastic, paper, and glass is increasing daily in all corners of the globe. In some countries these efforts are being (32)___________ by the local governments and in others, by individuals. Participation in these programs is at an all-time high. In the small town of Truro in eastern Massachusetts, for example, space in the local landfill has run out; therefore, residents have had to think of new ways to (33)___________ of their trash. With no room for items such as newspaper, bottles, and old lumber at the land fill, local residents have come up with many (34)___________ programs to recycle and/ or reuse what was once thought of as only trash. For instance, yard waste such as leaves and grass which used to be thrown in the landfill is now broken down and made into compost used by local people as fertilizer in their gardens. In addition, (35)___________ plastics, newspapers, bottles and cans are sold to a recycling company, thereby bringing in revenue for the town.Điền vào ô số 32

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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 25)

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 31 to 35.    Public awareness of the value of recycling materials such (31)___________ plastic, paper, and glass is increasing daily in all corners of the globe. In some countries these efforts are being (32)___________ by the local governments and in others, by individuals. Participation in these programs is at an all-time high. In the small town of Truro in eastern Massachusetts, for example, space in the local landfill has run out; therefore, residents have had to think of new ways to (33)___________ of their trash. With no room for items such as newspaper, bottles, and old lumber at the land fill, local residents have come up with many (34)___________ programs to recycle and/ or reuse what was once thought of as only trash. For instance, yard waste such as leaves and grass which used to be thrown in the landfill is now broken down and made into compost used by local people as fertilizer in their gardens. In addition, (35)___________ plastics, newspapers, bottles and cans are sold to a recycling company, thereby bringing in revenue for the town.Điền vào ô số 31

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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 25)

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questionsEveryone expected Clement‟s party to be a disaster. It was exactly the opposite

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Bài 5: Khảo sát sự biến thiên và vẽ đồ thị của hàm số

Khảo sát sự biến thiên và vẽ đồ thị của các hàm số đã học theo sơ đồ trên.y = ax + by=ax2+bx+c

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Đề thi thử THPT Quốc Gia môn Tiếng anh năm 2020 (Đề số 25)

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questionsWe didn’t want to spend a lot of money. We stayed in a cheap hotel

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P8)

It was only after 1815 that a distinctive American literature began to appear with writers as Washington Irving and James Fenimore Cooper

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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 44 to 50.Social parasitism involves one species relying on another to raise its young. Among vertebrates, the best known social parasites are such birds as cuckoos and cowbirds; the female lays egg in a nest belonging to another species and leaves it for the host to rear.The dulotic species of ants, however, are the supreme social parasites. Consider, for example, the unusual behavior of ants belonging to the genus Polyergus. All species of this ant have lost the ability to care for themselves. The workers do not forage for food, feed their brood or queen, or even clean their own nest. To compensate for these deficits, Polyergus has become specialized at obtaining workers from the related genus Formica to do these chores.In a raid, several thousand Polyergus workers will travel up to 500 feet in search of a Formica nest, penetrate it, drive off the queen and her workers, capture the pupal brood, and transport it back to their nest. The captured brood is then reared by the resident Formica workers until the developing pupae emerge to add to the Formica population, which maintains the mixed-species nest. The Formica workers forage for food and give it to colony members of both species. They also remove wastes and excavate new chambers as the population increases.The true extent of the Polyergus ants' dependence on the Formica becomes apparent when the worker population grows too large for existing nest. Formica scouts locate a new nesting site, return to the mixed-species colony, and recruit additional Formica nest mates. During a period that may last seven days, the Formica workers carry to the new nest all the Polyergus eggs, larvae, and pupae, every Polyergus adult, and even the Polyergus queen.Of the approximately 8,000 species of ants in the world, all 5 species of Polyergus and some 200 species in other genera have evolved some degree of parasitic relationship with other ants.According to the information in the passage, all of the following terms refer to ants belonging to the genus Formica EXCEPT the

Tiếng Anh Tốt nghiệp THPT
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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P8)

Linda is the more capable of the two girls who has tried out for the part in the play

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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 44 to 50.Social parasitism involves one species relying on another to raise its young. Among vertebrates, the best known social parasites are such birds as cuckoos and cowbirds; the female lays egg in a nest belonging to another species and leaves it for the host to rear.The dulotic species of ants, however, are the supreme social parasites. Consider, for example, the unusual behavior of ants belonging to the genus Polyergus. All species of this ant have lost the ability to care for themselves. The workers do not forage for food, feed their brood or queen, or even clean their own nest. To compensate for these deficits, Polyergus has become specialized at obtaining workers from the related genus Formica to do these chores.In a raid, several thousand Polyergus workers will travel up to 500 feet in search of a Formica nest, penetrate it, drive off the queen and her workers, capture the pupal brood, and transport it back to their nest. The captured brood is then reared by the resident Formica workers until the developing pupae emerge to add to the Formica population, which maintains the mixed-species nest. The Formica workers forage for food and give it to colony members of both species. They also remove wastes and excavate new chambers as the population increases.The true extent of the Polyergus ants' dependence on the Formica becomes apparent when the worker population grows too large for existing nest. Formica scouts locate a new nesting site, return to the mixed-species colony, and recruit additional Formica nest mates. During a period that may last seven days, the Formica workers carry to the new nest all the Polyergus eggs, larvae, and pupae, every Polyergus adult, and even the Polyergus queen.Of the approximately 8,000 species of ants in the world, all 5 species of Polyergus and some 200 species in other genera have evolved some degree of parasitic relationship with other ants.What happens when a mixed colony of Polyergus and Formica ants becomes too large?

Tiếng Anh Tốt nghiệp THPT
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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P8)

According to the latest news from the earthquake site, two-thirds of the city have been destroyed

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Bài 4: Đường tiệm cận

Tìm các tiệm cận đứng và ngang của đồ thị hàm số: y=x+1x-1 

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24 ĐỀ THI THỬ THPT QUỐC GIA NĂM 2019 Môn thi: TIẾNG ANH(P8)

Albert Einstein is lauded as one of the greatest theoretical physicists of all time

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ĐỀ 20

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.Social parasitism involves one species relying on another to raise its young. Among vertebrates, the best known social parasites are such birds as cuckoos and cowbirds; the female lays egg in a nest belonging to another species and leaves it for the host to rear.The dulotic species of ants, however, are the supreme social parasites. Consider, for example, the unusual behavior of ants belonging to the genus Polyergus. All species of this ant have lost the ability to care for themselves. The workers do not forage for food, feed their brood or queen, or even clean their own nest. To compensate for these deficits, Polyergus has become specialized at obtaining workers from the related genus Formica to do these chores.In a raid, several thousand Polyergus workers will travel up to 500 feet in search of a Formica nest, penetrate it, drive off the queen and her workers, capture the pupal brood, and transport it back to their nest. The captured brood is then reared by the resident Formica workers until the developing pupae emerge to add to the Formica population, which maintains the mixed-species nest. The Formica workers forage for food and give it to colony members of both species. They also remove wastes and excavate new chambers as the population increases.The true extent of the Polyergus ants' dependence on the Formica becomes apparent when the worker population grows too large for existing nest. Formica scouts locate a new nesting site, return to the mixed-species colony, and recruit additional Formica nest mates. During a period that may last seven days, the Formica workers carry to the new nest all the Polyergus eggs, larvae, and pupae, every Polyergus adult, and even the Polyergus queen.Of the approximately 8,000 species of ants in the world, all 5 species of Polyergus and some 200 species in other genera have evolved some degree of parasitic relationship with other ants.The word “recruit” in line 20 is closest in meaning to

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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 44 to 50.Social parasitism involves one species relying on another to raise its young. Among vertebrates, the best known social parasites are such birds as cuckoos and cowbirds; the female lays egg in a nest belonging to another species and leaves it for the host to rear.The dulotic species of ants, however, are the supreme social parasites. Consider, for example, the unusual behavior of ants belonging to the genus Polyergus. All species of this ant have lost the ability to care for themselves. The workers do not forage for food, feed their brood or queen, or even clean their own nest. To compensate for these deficits, Polyergus has become specialized at obtaining workers from the related genus Formica to do these chores.In a raid, several thousand Polyergus workers will travel up to 500 feet in search of a Formica nest, penetrate it, drive off the queen and her workers, capture the pupal brood, and transport it back to their nest. The captured brood is then reared by the resident Formica workers until the developing pupae emerge to add to the Formica population, which maintains the mixed-species nest. The Formica workers forage for food and give it to colony members of both species. They also remove wastes and excavate new chambers as the population increases.The true extent of the Polyergus ants' dependence on the Formica becomes apparent when the worker population grows too large for existing nest. Formica scouts locate a new nesting site, return to the mixed-species colony, and recruit additional Formica nest mates. During a period that may last seven days, the Formica workers carry to the new nest all the Polyergus eggs, larvae, and pupae, every Polyergus adult, and even the Polyergus queen.Of the approximately 8,000 species of ants in the world, all 5 species of Polyergus and some 200 species in other genera have evolved some degree of parasitic relationship with other ants.Which of the following is a task that an ant of the genus Polyergus might do?

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ĐỀ 20

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.Social parasitism involves one species relying on another to raise its young. Among vertebrates, the best known social parasites are such birds as cuckoos and cowbirds; the female lays egg in a nest belonging to another species and leaves it for the host to rear.The dulotic species of ants, however, are the supreme social parasites. Consider, for example, the unusual behavior of ants belonging to the genus Polyergus. All species of this ant have lost the ability to care for themselves. The workers do not forage for food, feed their brood or queen, or even clean their own nest. To compensate for these deficits, Polyergus has become specialized at obtaining workers from the related genus Formica to do these chores.In a raid, several thousand Polyergus workers will travel up to 500 feet in search of a Formica nest, penetrate it, drive off the queen and her workers, capture the pupal brood, and transport it back to their nest. The captured brood is then reared by the resident Formica workers until the developing pupae emerge to add to the Formica population, which maintains the mixed-species nest. The Formica workers forage for food and give it to colony members of both species. They also remove wastes and excavate new chambers as the population increases.The true extent of the Polyergus ants' dependence on the Formica becomes apparent when the worker population grows too large for existing nest. Formica scouts locate a new nesting site, return to the mixed-species colony, and recruit additional Formica nest mates. During a period that may last seven days, the Formica workers carry to the new nest all the Polyergus eggs, larvae, and pupae, every Polyergus adult, and even the Polyergus queen.Of the approximately 8,000 species of ants in the world, all 5 species of Polyergus and some 200 species in other genera have evolved some degree of parasitic relationship with other ants.What does the author mean by stating that “The dulotic species of ants...are the supreme social parasites” (line5)?

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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 44 to 50.Social parasitism involves one species relying on another to raise its young. Among vertebrates, the best known social parasites are such birds as cuckoos and cowbirds; the female lays egg in a nest belonging to another species and leaves it for the host to rear.The dulotic species of ants, however, are the supreme social parasites. Consider, for example, the unusual behavior of ants belonging to the genus Polyergus. All species of this ant have lost the ability to care for themselves. The workers do not forage for food, feed their brood or queen, or even clean their own nest. To compensate for these deficits, Polyergus has become specialized at obtaining workers from the related genus Formica to do these chores.In a raid, several thousand Polyergus workers will travel up to 500 feet in search of a Formica nest, penetrate it, drive off the queen and her workers, capture the pupal brood, and transport it back to their nest. The captured brood is then reared by the resident Formica workers until the developing pupae emerge to add to the Formica population, which maintains the mixed-species nest. The Formica workers forage for food and give it to colony members of both species. They also remove wastes and excavate new chambers as the population increases.The true extent of the Polyergus ants' dependence on the Formica becomes apparent when the worker population grows too large for existing nest. Formica scouts locate a new nesting site, return to the mixed-species colony, and recruit additional Formica nest mates. During a period that may last seven days, the Formica workers carry to the new nest all the Polyergus eggs, larvae, and pupae, every Polyergus adult, and even the Polyergus queen.Of the approximately 8,000 species of ants in the world, all 5 species of Polyergus and some 200 species in other genera have evolved some degree of parasitic relationship with other ants.The author mentions cuckoos and cowbirds in line 2 because they

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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 44 to 50.Social parasitism involves one species relying on another to raise its young. Among vertebrates, the best known social parasites are such birds as cuckoos and cowbirds; the female lays egg in a nest belonging to another species and leaves it for the host to rear.The dulotic species of ants, however, are the supreme social parasites. Consider, for example, the unusual behavior of ants belonging to the genus Polyergus. All species of this ant have lost the ability to care for themselves. The workers do not forage for food, feed their brood or queen, or even clean their own nest. To compensate for these deficits, Polyergus has become specialized at obtaining workers from the related genus Formica to do these chores.In a raid, several thousand Polyergus workers will travel up to 500 feet in search of a Formica nest, penetrate it, drive off the queen and her workers, capture the pupal brood, and transport it back to their nest. The captured brood is then reared by the resident Formica workers until the developing pupae emerge to add to the Formica population, which maintains the mixed-species nest. The Formica workers forage for food and give it to colony members of both species. They also remove wastes and excavate new chambers as the population increases.The true extent of the Polyergus ants' dependence on the Formica becomes apparent when the worker population grows too large for existing nest. Formica scouts locate a new nesting site, return to the mixed-species colony, and recruit additional Formica nest mates. During a period that may last seven days, the Formica workers carry to the new nest all the Polyergus eggs, larvae, and pupae, every Polyergus adult, and even the Polyergus queen.Of the approximately 8,000 species of ants in the world, all 5 species of Polyergus and some 200 species in other genera have evolved some degree of parasitic relationship with other ants.The word “raise” in line 1 is closest in meaning to

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