Có bao nhiêu số nguyên dương sao cho là một số có chữ số?  

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:

An air pollutant is defined as a compound added directly or indirectly by humans to the atmosphere in such quantities as to affect humans, animals, vegetation, or materials adversely. Air pollution requires a very flexible definition that permits continuous change. When the first air pollution laws were established in England in the fourteenth century, air pollutants were limited to compounds that could be seen or smelled – a far cry from the extensive list of harmful substances known today. As technology has developed and knowledge of health aspects of various chemicals has increased, the list of air pollutants has lengthened. In the future, even water vapor might be considered an air pollutant under certain conditions. Many of more important air pollutants such as sulfur oxides, carbon monoxide, and nitrogen oxides, are found in nature. As the Earth developed, the concentrations of these pollutants were altered by various chemical reactions; they became components in biogeochemical cycle. These serve as an air purification scheme by allowing the compounds to move from the air to the water or soil on a global basis, nature's output of these compounds dwarfs that resulting from human activities. However, human production usually occurs in a localized area, such as a city. In this localized regions, human output may be dominant and may temporarily overload the natural purification scheme of the cycle. The result is an increased concentration of noxious chemicals in the air. The concentrations at which the adverse effects appear will be greater than the concentrations that the pollutants would have in the absence of human activities. The actual concentration need not be large for a substance to be a pollutant; in fact the numerical value tells us little until we know how much of an increase this represents over the concentration that would occur naturally in the area. For example, sulfur dioxide has detectable health effects at 0.08 parts per million (ppm), which is about 400 times its natural level. Carbon monoxide, however, as a natural level of 0.1 ppm and is not usually a pollutant until its level reaches about 15 ppm.

Question: The word "these" in the second paragraph is closest in meaning to_______

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:

An air pollutant is defined as a compound added directly or indirectly by humans to the atmosphere in such quantities as to affect humans, animals, vegetation, or materials adversely. Air pollution requires a very flexible definition that permits continuous change. When the first air pollution laws were established in England in the fourteenth century, air pollutants were limited to compounds that could be seen or smelled – a far cry from the extensive list of harmful substances known today. As technology has developed and knowledge of health aspects of various chemicals has increased, the list of air pollutants has lengthened. In the future, even water vapor might be considered an air pollutant under certain conditions. Many of more important air pollutants such as sulfur oxides, carbon monoxide, and nitrogen oxides, are found in nature. As the Earth developed, the concentrations of these pollutants were altered by various chemical reactions; they became components in biogeochemical cycle. These serve as an air purification scheme by allowing the compounds to move from the air to the water or soil on a global basis, nature's output of these compounds dwarfs that resulting from human activities. However, human production usually occurs in a localized area, such as a city. In this localized regions, human output may be dominant and may temporarily overload the natural purification scheme of the cycle. The result is an increased concentration of noxious chemicals in the air. The concentrations at which the adverse effects appear will be greater than the concentrations that the pollutants would have in the absence of human activities. The actual concentration need not be large for a substance to be a pollutant; in fact the numerical value tells us little until we know how much of an increase this represents over the concentration that would occur naturally in the area. For example, sulfur dioxide has detectable health effects at 0.08 parts per million (ppm), which is about 400 times its natural level. Carbon monoxide, however, as a natural level of 0.1 ppm and is not usually a pollutant until its level reaches about 15 ppm.

Question: It can be inferred from the first paragraph that______         

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:

An air pollutant is defined as a compound added directly or indirectly by humans to the atmosphere in such quantities as to affect humans, animals, vegetation, or materials adversely. Air pollution requires a very flexible definition that permits continuous change. When the first air pollution laws were established in England in the fourteenth century, air pollutants were limited to compounds that could be seen or smelled – a far cry from the extensive list of harmful substances known today. As technology has developed and knowledge of health aspects of various chemicals has increased, the list of air pollutants has lengthened. In the future, even water vapor might be considered an air pollutant under certain conditions. Many of more important air pollutants such as sulfur oxides, carbon monoxide, and nitrogen oxides, are found in nature. As the Earth developed, the concentrations of these pollutants were altered by various chemical reactions; they became components in biogeochemical cycle. These serve as an air purification scheme by allowing the compounds to move from the air to the water or soil on a global basis, nature's output of these compounds dwarfs that resulting from human activities. However, human production usually occurs in a localized area, such as a city. In this localized regions, human output may be dominant and may temporarily overload the natural purification scheme of the cycle. The result is an increased concentration of noxious chemicals in the air. The concentrations at which the adverse effects appear will be greater than the concentrations that the pollutants would have in the absence of human activities. The actual concentration need not be large for a substance to be a pollutant; in fact the numerical value tells us little until we know how much of an increase this represents over the concentration that would occur naturally in the area. For example, sulfur dioxide has detectable health effects at 0.08 parts per million (ppm), which is about 400 times its natural level. Carbon monoxide, however, as a natural level of 0.1 ppm and is not usually a pollutant until its level reaches about 15 ppm.

Question: The word "localized” is closest in meaning to_______          

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:

An air pollutant is defined as a compound added directly or indirectly by humans to the atmosphere in such quantities as to affect humans, animals, vegetation, or materials adversely. Air pollution requires a very flexible definition that permits continuous change. When the first air pollution laws were established in England in the fourteenth century, air pollutants were limited to compounds that could be seen or smelled – a far cry from the extensive list of harmful substances known today. As technology has developed and knowledge of health aspects of various chemicals has increased, the list of air pollutants has lengthened. In the future, even water vapor might be considered an air pollutant under certain conditions. Many of more important air pollutants such as sulfur oxides, carbon monoxide, and nitrogen oxides, are found in nature. As the Earth developed, the concentrations of these pollutants were altered by various chemical reactions; they became components in biogeochemical cycle. These serve as an air purification scheme by allowing the compounds to move from the air to the water or soil on a global basis, nature's output of these compounds dwarfs that resulting from human activities. However, human production usually occurs in a localized area, such as a city. In this localized regions, human output may be dominant and may temporarily overload the natural purification scheme of the cycle. The result is an increased concentration of noxious chemicals in the air. The concentrations at which the adverse effects appear will be greater than the concentrations that the pollutants would have in the absence of human activities. The actual concentration need not be large for a substance to be a pollutant; in fact the numerical value tells us little until we know how much of an increase this represents over the concentration that would occur naturally in the area. For example, sulfur dioxide has detectable health effects at 0.08 parts per million (ppm), which is about 400 times its natural level. Carbon monoxide, however, as a natural level of 0.1 ppm and is not usually a pollutant until its level reaches about 15 ppm.

Question: For which of the following reasons can natural pollutants play an important role in controlling air pollution?         

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:

An air pollutant is defined as a compound added directly or indirectly by humans to the atmosphere in such quantities as to affect humans, animals, vegetation, or materials adversely. Air pollution requires a very flexible definition that permits continuous change. When the first air pollution laws were established in England in the fourteenth century, air pollutants were limited to compounds that could be seen or smelled – a far cry from the extensive list of harmful substances known today. As technology has developed and knowledge of health aspects of various chemicals has increased, the list of air pollutants has lengthened. In the future, even water vapor might be considered an air pollutant under certain conditions. Many of more important air pollutants such as sulfur oxides, carbon monoxide, and nitrogen oxides, are found in nature. As the Earth developed, the concentrations of these pollutants were altered by various chemical reactions; they became components in biogeochemical cycle. These serve as an air purification scheme by allowing the compounds to move from the air to the water or soil on a global basis, nature's output of these compounds dwarfs that resulting from human activities. However, human production usually occurs in a localized area, such as a city. In this localized regions, human output may be dominant and may temporarily overload the natural purification scheme of the cycle. The result is an increased concentration of noxious chemicals in the air. The concentrations at which the adverse effects appear will be greater than the concentrations that the pollutants would have in the absence of human activities. The actual concentration need not be large for a substance to be a pollutant; in fact the numerical value tells us little until we know how much of an increase this represents over the concentration that would occur naturally in the area. For example, sulfur dioxide has detectable health effects at 0.08 parts per million (ppm), which is about 400 times its natural level. Carbon monoxide, however, as a natural level of 0.1 ppm and is not usually a pollutant until its level reaches about 15 ppm.

Question: Which of the following is best supported by the passage?         

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:

An air pollutant is defined as a compound added directly or indirectly by humans to the atmosphere in such quantities as to affect humans, animals, vegetation, or materials adversely. Air pollution requires a very flexible definition that permits continuous change. When the first air pollution laws were established in England in the fourteenth century, air pollutants were limited to compounds that could be seen or smelled – a far cry from the extensive list of harmful substances known today. As technology has developed and knowledge of health aspects of various chemicals has increased, the list of air pollutants has lengthened. In the future, even water vapor might be considered an air pollutant under certain conditions. Many of more important air pollutants such as sulfur oxides, carbon monoxide, and nitrogen oxides, are found in nature. As the Earth developed, the concentrations of these pollutants were altered by various chemical reactions; they became components in biogeochemical cycle. These serve as an air purification scheme by allowing the compounds to move from the air to the water or soil on a global basis, nature's output of these compounds dwarfs that resulting from human activities. However, human production usually occurs in a localized area, such as a city. In this localized regions, human output may be dominant and may temporarily overload the natural purification scheme of the cycle. The result is an increased concentration of noxious chemicals in the air. The concentrations at which the adverse effects appear will be greater than the concentrations that the pollutants would have in the absence of human activities. The actual concentration need not be large for a substance to be a pollutant; in fact the numerical value tells us little until we know how much of an increase this represents over the concentration that would occur naturally in the area. For example, sulfur dioxide has detectable health effects at 0.08 parts per million (ppm), which is about 400 times its natural level. Carbon monoxide, however, as a natural level of 0.1 ppm and is not usually a pollutant until its level reaches about 15 ppm.

Question: The word "detectable" in the third paragraph is closest in meaning to______         

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:

Psychologists who work on motivation research a wide range of human traits and physiological characteristics that include the effects of hunger, reward, and punishment, as well as desires for power, tangible achievement, social acceptance, belongingness, self-esteem, and self-actualization. A plethora of hypotheses developed in the nineteenth and twentieth centuries have the goal of identifying causes of an organism’s behavior that can be both conscious and unconscious. The hierarchical organization of human needs is a theoretical model, originally established by an American psychologist, Abraham Maslow, in 1954. The needs located at the bottom of the pyramid are the essentials of physiological survival that encompass oxygen, water, nutrition, rest and avoidance of pain. Maslow’s theory, grounded in research, also stipulated that these are variable and, at least to some extent, may explain, for example, food gratification. The second tier is rooted in the human need for safety, stability and protection.

In the human life cycle, the needs for belonging are manifested in the desires to marry, have a family, belong in a community or among similarly minded people. In part, the need to belong can also show up in a search for particular types of occupations or careers. The next level of the hierarchy in effect deals with two substrata, where the first presumes the need for status, prestige, recognition, appreciation, and dominance, and the higher division includes a conglomeration of emotionally centered traits that pivot on competence, confidence, mastery, achievement, independence, and freedom.

The top tier is different from all others, and Maslow referred to it as growth motivation and self-actualization. At the highest level, individuals seek to realize and put to use their creativity, talent, leadership, curiosity and understanding. At this level people can reach their full potentials and accurately perceive and accept reality, seek privacy and depth in personal relationships, resist enculturation, and develop social interests, compassion, and humanity. In many cases, self-actualizers do not lead ordinary lives, choose growth over safety, and cultivate peak experiences that leave their mark and change one for the better.

Question 40: It can be inferred from the passage that in modern-day terms, the second layer of needs can be reflected in people’s desire for _______.         

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:

Psychologists who work on motivation research a wide range of human traits and physiological characteristics that include the effects of hunger, reward, and punishment, as well as desires for power, tangible achievement, social acceptance, belongingness, self-esteem, and self-actualization. A plethora of hypotheses developed in the nineteenth and twentieth centuries have the goal of identifying causes of an organism’s behavior that can be both conscious and unconscious. The hierarchical organization of human needs is a theoretical model, originally established by an American psychologist, Abraham Maslow, in 1954. The needs located at the bottom of the pyramid are the essentials of physiological survival that encompass oxygen, water, nutrition, rest and avoidance of pain. Maslow’s theory, grounded in research, also stipulated that these are variable and, at least to some extent, may explain, for example, food gratification. The second tier is rooted in the human need for safety, stability and protection.

In the human life cycle, the needs for belonging are manifested in the desires to marry, have a family, belong in a community or among similarly minded people. In part, the need to belong can also show up in a search for particular types of occupations or careers. The next level of the hierarchy in effect deals with two substrata, where the first presumes the need for status, prestige, recognition, appreciation, and dominance, and the higher division includes a conglomeration of emotionally centered traits that pivot on competence, confidence, mastery, achievement, independence, and freedom.

The top tier is different from all others, and Maslow referred to it as growth motivation and self-actualization. At the highest level, individuals seek to realize and put to use their creativity, talent, leadership, curiosity and understanding. At this level people can reach their full potentials and accurately perceive and accept reality, seek privacy and depth in personal relationships, resist enculturation, and develop social interests, compassion, and humanity. In many cases, self-actualizers do not lead ordinary lives, choose growth over safety, and cultivate peak experiences that leave their mark and change one for the better.

Question 41: The word “conglomeration” in paragraph 2 is closest in meaning to _______.         

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:

Psychologists who work on motivation research a wide range of human traits and physiological characteristics that include the effects of hunger, reward, and punishment, as well as desires for power, tangible achievement, social acceptance, belongingness, self-esteem, and self-actualization. A plethora of hypotheses developed in the nineteenth and twentieth centuries have the goal of identifying causes of an organism’s behavior that can be both conscious and unconscious. The hierarchical organization of human needs is a theoretical model, originally established by an American psychologist, Abraham Maslow, in 1954. The needs located at the bottom of the pyramid are the essentials of physiological survival that encompass oxygen, water, nutrition, rest and avoidance of pain. Maslow’s theory, grounded in research, also stipulated that these are variable and, at least to some extent, may explain, for example, food gratification. The second tier is rooted in the human need for safety, stability and protection.

In the human life cycle, the needs for belonging are manifested in the desires to marry, have a family, belong in a community or among similarly minded people. In part, the need to belong can also show up in a search for particular types of occupations or careers. The next level of the hierarchy in effect deals with two substrata, where the first presumes the need for status, prestige, recognition, appreciation, and dominance, and the higher division includes a conglomeration of emotionally centered traits that pivot on competence, confidence, mastery, achievement, independence, and freedom.

The top tier is different from all others, and Maslow referred to it as growth motivation and self-actualization. At the highest level, individuals seek to realize and put to use their creativity, talent, leadership, curiosity and understanding. At this level people can reach their full potentials and accurately perceive and accept reality, seek privacy and depth in personal relationships, resist enculturation, and develop social interests, compassion, and humanity. In many cases, self-actualizers do not lead ordinary lives, choose growth over safety, and cultivate peak experiences that leave their mark and change one for the better.

Question 42: Which of the following is NOT mentioned as a factor in human motivation?         

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:

Psychologists who work on motivation research a wide range of human traits and physiological characteristics that include the effects of hunger, reward, and punishment, as well as desires for power, tangible achievement, social acceptance, belongingness, self-esteem, and self-actualization. A plethora of hypotheses developed in the nineteenth and twentieth centuries have the goal of identifying causes of an organism’s behavior that can be both conscious and unconscious. The hierarchical organization of human needs is a theoretical model, originally established by an American psychologist, Abraham Maslow, in 1954. The needs located at the bottom of the pyramid are the essentials of physiological survival that encompass oxygen, water, nutrition, rest and avoidance of pain. Maslow’s theory, grounded in research, also stipulated that these are variable and, at least to some extent, may explain, for example, food gratification. The second tier is rooted in the human need for safety, stability and protection.

In the human life cycle, the needs for belonging are manifested in the desires to marry, have a family, belong in a community or among similarly minded people. In part, the need to belong can also show up in a search for particular types of occupations or careers. The next level of the hierarchy in effect deals with two substrata, where the first presumes the need for status, prestige, recognition, appreciation, and dominance, and the higher division includes a conglomeration of emotionally centered traits that pivot on competence, confidence, mastery, achievement, independence, and freedom.

The top tier is different from all others, and Maslow referred to it as growth motivation and self-actualization. At the highest level, individuals seek to realize and put to use their creativity, talent, leadership, curiosity and understanding. At this level people can reach their full potentials and accurately perceive and accept reality, seek privacy and depth in personal relationships, resist enculturation, and develop social interests, compassion, and humanity. In many cases, self-actualizers do not lead ordinary lives, choose growth over safety, and cultivate peak experiences that leave their mark and change one for the better.

Question 43: Which of the following conclusions is supported by the passage?