Gọi G , H lần lượt là trọng tâm, trực tâm của tam giác ABC. Đặt BC = a, CA = b, AB = c. Xét các mệnh đề sau:
I. Nếu 2b = a + c thì 2sinB = sinA + sinC.
II. Nếu c² = ab thì sin²C = sinA. sinB.
III. GA + GB + GC = 0.
Mệnh đề đúng là

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:

In most of the earliest books for children, illustrations were an afterthought. But in the Caldecott “toy books”, which first appeared in 1878, they were almost as important as the lines of text, and occupied far more space in the book. One can almost read the story from the dramatic action in the pictures. Since then, thousands of successful picture books have been published in the United States and around the world. In the best, the words and illustrations seem to complement each other perfectly. Often a single person is responsible for both writing and illustrating the book. One of the greatest, and certainly one of the most successful, illustrator-authors was Dr. Seuss, whose real name was Theodor Geisel. His first children’s book, And to Think That I Saw It on Mulberry Street, hit the market in 1937, and the world of children’s literature was changed forever. Seuss’s playful drawings were a perfect complement to his engaging stories and unforgettable characters. In 1957, Seuss’s The Cat in the Hat became the first book in Random House’s best-selling series, Beginner Books, written by Seuss and several other authors. These combine outrageous illustrations of people, creatures, and plants, and playful stories written in very simple language. Dr. Seuss is not the only well-known author-illustrator, of course. There is Max Sendak, who wrote and illustrated Where the Wild Things Are, the story of a little boy named Max, who becomes king of the fierce (but funny) creatures that live in the Land of the Wilds Things. Robert McCloskey produced both the richly textured illustrations and delightful story of a family of ducks living in downtown Boston, Make Ways for Ducklings. Some books are produced by a collaborative author artist team. Author Margaret Wise Brown combined with illustrator Clement Hurd to produce two delightful books loved by very young children, Goodnight Moon and The Runaway Bunny. Another example is the husband-and-wife team of writer Audrey Wood and illustrator Don Wood, who were responsible for King Bidgoods in the Bathtub and The Napping House. Wordless and nearly wordless picture books have become popular. With a little help, three and four-year-olds can follow the sequence of events, and they can understand the stories suggested in them. The marvel of books with few or no words is that they allow children and their parents the opportunity to tell and retell the same stories over and over in their own words. One of the most charming examples of a wordless book is Jan Omerod's Sunshine. Barbara Berger’s Grandfather Twilight and David Weisner’s Tuesday are examples of books containing only a few words. U.S. publishers have also drawn on illustrators from other countries whose original, imaginative works have brought their different visions to American children’s books. Among them are Leo Lionni from Italy, Feodor Rojankovsky from Russia, and Taro Yashimi from Japan.

Question: According to the passage, when was the world of children’s literature changed?         

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:

You can usually tell when your friends are happy or angry by the looks on their faces or by their actions. This is useful because reading their emotional expressions helps you to know how to respond to them. Emotions have evolved to help us respond to important situations and to convey our intentions to others. But does raising the eyebrows and rounding the mouth say the same thing in Minneapolis as it does in Madagascar? Much research on emotional expressions has centered on such questions. According to Paul Ekman, the leading researcher in this area, people speak and understand substantially the same “facial language”. Studies by Ekman’s group have demonstrated that humans share a set of universal emotional expressions that testify to the common biological heritage of the human species. Smiles, for example, signal happiness and frowns indicate sadness on the faces of people in such far - flung places as Argentina, Japan, Spain, Hungary, Poland, Sumatra, the United States, Vietnam, the jungles of New Guinea, and the Eskimo villages north of Artic Circle. Ekman and his colleagues claim that people everywhere can recognize at least seven basic emotions: sadness, fear, anger, disgust, contempt, happiness, and surprise. There are, however, huge differences across cultures in both the context and intensity of emotional displays - the so called display rules. In many Asian cultures, for example, children are taught to control emotional responses - especially negative ones - while many American children are encouraged to express their feelings more openly. Regardless of culture, however, emotions usually show themselves, to some degree, in people’s behavior. From their first days of life, babies produce facial expressions that communicate their feelings. The ability to read facial expressions develops early, too. Very young children pay close attention to facial expressions, and by age five, they nearly equal adults in their skill at reading emotions on people’s faces. This evidence all points to a biological underpinning for our abilities to express and interpret a basic set of human emotions. Moreover, as Charles Darwin pointed out over a century ago, some emotional expressions seem to appear across species boundaries. Cross - cultural psychologists tell us that certain emotional responses carry different meanings in different cultures. For example, what emotion do you suppose might be conveyed by sticking out your tongue? For Americans, this might indicate disgust, while in China it can signify surprise. Likewise, a grin on an American face may indicate joy, while on a Japanese face it may just as easily mean embarrassment. Clearly, culture influences emotional expressions.

Question: Many studies on emotional expressions try to answer whether________                 

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:

You can usually tell when your friends are happy or angry by the looks on their faces or by their actions. This is useful because reading their emotional expressions helps you to know how to respond to them. Emotions have evolved to help us respond to important situations and to convey our intentions to others. But does raising the eyebrows and rounding the mouth say the same thing in Minneapolis as it does in Madagascar? Much research on emotional expressions has centered on such questions. According to Paul Ekman, the leading researcher in this area, people speak and understand substantially the same “facial language”. Studies by Ekman’s group have demonstrated that humans share a set of universal emotional expressions that testify to the common biological heritage of the human species. Smiles, for example, signal happiness and frowns indicate sadness on the faces of people in such far - flung places as Argentina, Japan, Spain, Hungary, Poland, Sumatra, the United States, Vietnam, the jungles of New Guinea, and the Eskimo villages north of Artic Circle. Ekman and his colleagues claim that people everywhere can recognize at least seven basic emotions: sadness, fear, anger, disgust, contempt, happiness, and surprise. There are, however, huge differences across cultures in both the context and intensity of emotional displays - the so called display rules. In many Asian cultures, for example, children are taught to control emotional responses - especially negative ones - while many American children are encouraged to express their feelings more openly. Regardless of culture, however, emotions usually show themselves, to some degree, in people’s behavior. From their first days of life, babies produce facial expressions that communicate their feelings. The ability to read facial expressions develops early, too. Very young children pay close attention to facial expressions, and by age five, they nearly equal adults in their skill at reading emotions on people’s faces. This evidence all points to a biological underpinning for our abilities to express and interpret a basic set of human emotions. Moreover, as Charles Darwin pointed out over a century ago, some emotional expressions seem to appear across species boundaries. Cross - cultural psychologists tell us that certain emotional responses carry different meanings in different cultures. For example, what emotion do you suppose might be conveyed by sticking out your tongue? For Americans, this might indicate disgust, while in China it can signify surprise. Likewise, a grin on an American face may indicate joy, while on a Japanese face it may just as easily mean embarrassment. Clearly, culture influences emotional expressions.

Question: The biggest difference lies in _______.         

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:

You can usually tell when your friends are happy or angry by the looks on their faces or by their actions. This is useful because reading their emotional expressions helps you to know how to respond to them. Emotions have evolved to help us respond to important situations and to convey our intentions to others. But does raising the eyebrows and rounding the mouth say the same thing in Minneapolis as it does in Madagascar? Much research on emotional expressions has centered on such questions. According to Paul Ekman, the leading researcher in this area, people speak and understand substantially the same “facial language”. Studies by Ekman’s group have demonstrated that humans share a set of universal emotional expressions that testify to the common biological heritage of the human species. Smiles, for example, signal happiness and frowns indicate sadness on the faces of people in such far - flung places as Argentina, Japan, Spain, Hungary, Poland, Sumatra, the United States, Vietnam, the jungles of New Guinea, and the Eskimo villages north of Artic Circle. Ekman and his colleagues claim that people everywhere can recognize at least seven basic emotions: sadness, fear, anger, disgust, contempt, happiness, and surprise. There are, however, huge differences across cultures in both the context and intensity of emotional displays - the so called display rules. In many Asian cultures, for example, children are taught to control emotional responses - especially negative ones - while many American children are encouraged to express their feelings more openly. Regardless of culture, however, emotions usually show themselves, to some degree, in people’s behavior. From their first days of life, babies produce facial expressions that communicate their feelings. The ability to read facial expressions develops early, too. Very young children pay close attention to facial expressions, and by age five, they nearly equal adults in their skill at reading emotions on people’s faces. This evidence all points to a biological underpinning for our abilities to express and interpret a basic set of human emotions. Moreover, as Charles Darwin pointed out over a century ago, some emotional expressions seem to appear across species boundaries. Cross - cultural psychologists tell us that certain emotional responses carry different meanings in different cultures. For example, what emotion do you suppose might be conveyed by sticking out your tongue? For Americans, this might indicate disgust, while in China it can signify surprise. Likewise, a grin on an American face may indicate joy, while on a Japanese face it may just as easily mean embarrassment. Clearly, culture influences emotional expressions.

Question: Young children ________.         

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:

You can usually tell when your friends are happy or angry by the looks on their faces or by their actions. This is useful because reading their emotional expressions helps you to know how to respond to them. Emotions have evolved to help us respond to important situations and to convey our intentions to others. But does raising the eyebrows and rounding the mouth say the same thing in Minneapolis as it does in Madagascar? Much research on emotional expressions has centered on such questions. According to Paul Ekman, the leading researcher in this area, people speak and understand substantially the same “facial language”. Studies by Ekman’s group have demonstrated that humans share a set of universal emotional expressions that testify to the common biological heritage of the human species. Smiles, for example, signal happiness and frowns indicate sadness on the faces of people in such far- flung places as Argentina, Japan, Spain, Hungary, Poland, Sumatra, the United States, Vietnam, the jungles of New Guinea, and the Eskimo villages north of Artic Circle. Ekman and his colleagues claim that people everywhere can recognize at least seven basic emotions: sadness, fear, anger, disgust, contempt, happiness, and surprise. There are, however, huge differences across cultures in both the context and intensity of emotional displays - the so called display rules. In many Asian cultures, for example, children are taught to control emotional responses - especially negative ones- while many American children are encouraged to express their feelings more openly. Regardless of culture, however, emotions usually show themselves, to some degree, in people’s behavior. From their first days of life, babies produce facial expressions that communicate their feelings. The ability to read facial expressions develops early, too. Very young children pay close attention to facial expressions, and by age five, they nearly equal adults in their skill at reading emotions on people’s faces. This evidence all points to a biological underpinning for our abilities to express and interpret a basic set of human emotions. Moreover, as Charles Darwin pointed out over a century ago, some emotional expressions seem to appear across species boundaries. Cross - cultural psychologists tell us that certain emotional responses carry different meanings in different cultures. For example, what emotion do you suppose might be conveyed by sticking out your tongue? For Americans, this might indicate disgust, while in China it can signify surprise. Likewise, a grin on an American face may indicate joy, while on a Japanese face it may just as easily mean embarrassment. Clearly, culture influences emotional expressions.

Question: The best title for the passage is ________.         

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:

You can usually tell when your friends are happy or angry by the looks on their faces or by their actions. This is useful because reading their emotional expressions helps you to know how to respond to them. Emotions have evolved to help us respond to important situations and to convey our intentions to others. But does raising the eyebrows and rounding the mouth say the same thing in Minneapolis as it does in Madagascar? Much research on emotional expressions has centered on such questions. According to Paul Ekman, the leading researcher in this area, people speak and understand substantially the same “facial language”. Studies by Ekman’s group have demonstrated that humans share a set of universal emotional expressions that testify to the common biological heritage of the human species. Smiles, for example, signal happiness and frowns indicate sadness on the faces of people in such far - flung places as Argentina, Japan, Spain, Hungary, Poland, Sumatra, the United States, Vietnam, the jungles of New Guinea, and the Eskimo villages north of Artic Circle. Ekman and his colleagues claim that people everywhere can recognize at least seven basic emotions: sadness, fear, anger, disgust, contempt, happiness, and surprise. There are, however, huge differences across cultures in both the context and intensity of emotional displays - the so called display rules. In many Asian cultures, for example, children are taught to control emotional responses - especially negative ones - while many American children are encouraged to express their feelings more openly. Regardless of culture, however, emotions usually show themselves, to some degree, in people’s behavior. From their first days of life, babies produce facial expressions that communicate their feelings. The ability to read facial expressions develops early, too. Very young children pay close attention to facial expressions, and by age five, they nearly equal adults in their skill at reading emotions on people’s faces. This evidence all points to a biological underpinning for our abilities to express and interpret a basic set of human emotions. Moreover, as Charles Darwin pointed out over a century ago, some emotional expressions seem to appear across species boundaries. Cross - cultural psychologists tell us that certain emotional responses carry different meanings in different cultures. For example, what emotion do you suppose might be conveyed by sticking out your tongue? For Americans, this might indicate disgust, while in China it can signify surprise. Likewise, a grin on an American face may indicate joy, while on a Japanese face it may just as easily mean embarrassment. Clearly, culture influences emotional expressions.

Question: Paul Ekman is mentioned in the passage as an example of _______.           

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each questions:

A lot of advice is available for college leavers heading for their first job. In this article we consider the move to a second job. We are not concerned with those looking for a second temporary position while hunting for a permanent job. Nor are we concerned with those leaving an unsatisfactory job within the first few weeks. Instead, we will be dealing with those of you taking a real step on the career ladder, choosing a job to fit in with your ambitions now that you have learnt your way around, acquired some skills and have some idea of where you want to go. What sort of job should you look for? Much depends on your long-term aim. You need to ask yourself whether you want to specialize in a particular field, work your way up to higher levels of responsibility or out of your current employment into a broader field. Whatever you decide, you should choose your second job very carefully. You should be aiming to stay in it for two or three years. This job will be studied very carefully when you send your letter of application for your next job. It should show evidence of serious career planning. Most important, it should extend you, develop you and give you increasing responsibility. Incidentally, if you are interested in traveling, now is the time to pack up and go. You can do temporary work for a while when you return, pick up where you left off and get the second job then. Future potential employers will be relieved to see that you have got it out of your system, and are not likely to go off again. Juliette Davidson spend her first year after leaving St. Aldate’s College working for three lawyers. It was the perfect first job in that “OK ... they were very supportive people. I was gently introduced to the work, learnt my way around an office and improve my word processing skills. However, there was no scope for advancement. One day, I gave my notice, bought an air ticket and traveled for a year. Juliette now works as a Personal Assistant to Brenda Cleverdon, the Chief Executive of business in the Community. “In two and a half years I have become more able and my job has really grown,“ she says. “Right from the beginning my boss was very keen to develop me. My job title is the same as it was when I started but the duties have changed. From mainly typing and telephone work, I have progressed to doing most of the correspondence and budgets. I also have to deal with a variety of queries, coming from chairmen of large companies to people wanting to know how to start their own business. Brenda involves me in all her work but also gives me specific projects to do and events to organize.”  

Question: In what way is Juliette’s current job better than her first job?         

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each questions:

A lot of advice is available for college leavers heading for their first job. In this article we consider the move to a second job. We are not concerned with those looking for a second temporary position while hunting for a permanent job. Nor are we concerned with those leaving an unsatisfactory job within the first few weeks. Instead, we will be dealing with those of you taking a real step on the career ladder, choosing a job to fit in with your ambitions now that you have learnt your way around, acquired some skills and have some idea of where you want to go. What sort of job should you look for? Much depends on your long-term aim. You need to ask yourself whether you want to specialize in a particular field, work your way up to higher levels of responsibility or out of your current employment into a broader field. Whatever you decide, you should choose your second job very carefully. You should be aiming to stay in it for two or three years. This job will be studied very carefully when you send your letter of application for your next job. It should show evidence of serious career planning. Most important, it should extend you, develop you and give you increasing responsibility. Incidentally, if you are interested in traveling, now is the time to pack up and go. You can do temporary work for a while when you return, pick up where you left off and get the second job then. Future potential employers will be relieved to see that you have got it out of your system, and are not likely to go off again. Juliette Davidson spend her first year after leaving St. Aldate’s College working for three lawyers. It was the perfect first job in that “OK ... they were very supportive people. I was gently introduced to the work, learnt my way around an office and improve my word processing skills. However, there was no scope for advancement. One day, I gave my notice, bought an air ticket and traveled for a year. Juliette now works as a Personal Assistant to Brenda Cleverdon, the Chief Executive of business in the Community. “In two and a half years I have become more able and my job has really grown,“ she says. “Right from the beginning my boss was very keen to develop me. My job title is the same as it was when I started but the duties have changed. From mainly typing and telephone work, I have progressed to doing most of the correspondence and budgets. I also have to deal with a variety of queries, coming from chairmen of large companies to people wanting to know how to start their own business. Brenda involves me in all her work but also gives me specific projects to do and events to organize.” 

Question: How did Juliette Davidson benefit from the experience of her first job?         

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each questions:

A lot of advice is available for college leavers heading for their first job. In this article we consider the move to a second job. We are not concerned with those looking for a second temporary position while hunting for a permanent job. Nor are we concerned with those leaving an unsatisfactory job within the first few weeks. Instead, we will be dealing with those of you taking a real step on the career ladder, choosing a job to fit in with your ambitions now that you have learnt your way around, acquired some skills and have some idea of where you want to go. What sort of job should you look for? Much depends on your long-term aim. You need to ask yourself whether you want to specialize in a particular field, work your way up to higher levels of responsibility or out of your current employment into a broader field. Whatever you decide, you should choose your second job very carefully. You should be aiming to stay in it for two or three years. This job will be studied very carefully when you send your letter of application for your next job. It should show evidence of serious career planning. Most important, it should extend you, develop you and give you increasing responsibility. Incidentally, if you are interested in traveling, now is the time to pack up and go. You can do temporary work for a while when you return, pick up where you left off and get the second job then. Future potential employers will be relieved to see that you have got it out of your system, and are not likely to go off again. Juliette Davidson spend her first year after leaving St. Aldate’s College working for three lawyers. It was the perfect first job in that “OK ... they were very supportive people. I was gently introduced to the work, learnt my way around an office and improve my word processing skills. However, there was no scope for advancement. One day, I gave my notice, bought an air ticket and traveled for a year. Juliette now works as a Personal Assistant to Brenda Cleverdon, the Chief Executive of business in the Community. “In two and a half years I have become more able and my job has really grown,“ she says. “Right from the beginning my boss was very keen to develop me. My job title is the same as it was when I started but the duties have changed. From mainly typing and telephone work, I have progressed to doing most of the correspondence and budgets. I also have to deal with a variety of queries, coming from chairmen of large companies to people wanting to know how to start their own business. Brenda involves me in all her work but also gives me specific projects to do and events to organize.” 

Question: What does the phrase “you have got it out of your system” in passage mean?  

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:

The ideas of John Dewey, philosopher and educator, have influenced American thought for over one hundred years. Dewey was born in Vermont in 1859, and throughout hi life he kept the respect for experience, individuality, and fair play that shaped the character of the nineteenth century Vermonter. He viewed his own life as a continuously reconstructive process with experience and knowledge building on each other. By the 1930s, Dewey had simplified his theory of experience to its essence. As the intellectual leader of the progressive schools, he asserted that there was danger in rejecting the old unless the new was rooted in a connect idea of experience. He held that experience is an interaction between what a person already knows and the situation at hand. Previous knowledge interacting with the present environment influences future experience. Dewey believed that experience could not be equated with education because all experiences as not necessarily educative. Experience is educative only when it contributes to the growth of the individual, but it can be miseducative if it distorts the growth of further experience. It is the quality of experience that matters. Thus, productive experience is both the means and the goal of education. Furthermore, since education is a social process, truly progressive education involves the participation of the learner in directing the learning experience. During his long life, Dewey lectured and published prolifically. These writings were influential both during his lifetime and after his death at the age of ninety-two. He viewed his whole life as an experiment which would produce knowledge that would lead to further experimentation. The range and diversity of Dewey’s writings and his influence on society place him among American’s great thinkers.

Question: All of the following were part of Dewey’s theory of experience and education EXCEPT___