Click aici >> 🐨 Trong Các Câu Sau Câu Nào Là Mệnh Đề

Trong các câu sau, có bao nhiêu câu là mệnh đề? a) Hãy đi nhanh lên! b) Hà Nội là thủ đô của Việt Nam. c) 5+7+4 =15. d) Năm là năm nhuận. Cho x là số thực, mệnh đề nào sau đây đúng? Trong các phát biểu sau, phát biểu nào là mệnh đề? Mệnh đề "\ (\exists x \in R, {x^2} = 3 Câu 4: Trong các câu sau , câu nào không phải là câu ghép: A. Không ai nói gì, người ta lảng dần đi. B. Hắn chửi trời và hắn chửi đời. C. Hắn uống đến say mềm người rồi hắn đi. D. Rồi hai con mắt long lanh của cô tôi chằm chặp đưa nhìn tôi. DCâu 1 Câu nào trong các câu sau không phải là mệnh đề ? A 3 +2 = 7. B x 2 +1>0. C 2-x<0. D 4+x=3. Câu 2 Phát biểu nào là mệnh đề đúng? A \(\pi\) là một số hữu tỉ. B Tổng của 2 cạnh 1 tam giác lớn hơn cạnh thứ 3 . C Bạn có bút không? D Con thì thấp hơn cha . Câu 3 Mệnh đề nào sai? Trong các câu sau, câu nào là mệnh đề, câu nào là mệnh đề chứa biến? LG a. 3+2=7. LG b. 4+x=3. LG c. Đ / S Trong hình trên: Đ / S a. B là trung điểm của đoạn thẳng AC b. D là trung điểm của đoạn thẳng CE c. C là điểm ở giữa hai điểm B và E d. Các câu sau đây, câu nào là mệnh đề, câu nào không phải là mệnh đề? Nếu là mệnh đề hay cho biết mệnh đề đó đúng hay sai. a) Không được đi lối này! b) Bây giờ là mấy giờ? c)7 không là số nguyên tố. d) 5 là số vô tỉ. Vay Tiền Nhanh. Câu hỏi Trong các câu sau, câu nào là mệnh đề? A. Lan chăm học quá! B. Thật tuyệt vời! C. Hà Nội là thủ đô của Việt Nam Đáp án chính xác D. Bạn có thích đọc sách không? Trả lời Đáp án CHà Nội là thủ đô của Việt Nam là phát biểu đúng⇒mệnh đáp án A,B,D phát biểu không biết được tính đúng, sai⇒không là mệnh đề. ====== mời các bạn xem câu tiếp bên dưới ===== Trong các phát biểu sau, phát biểu đúng là Câu hỏi Trong các phát biểu sau, phát biểu đúng là A. Mệnh đề chứa biến có là mệnh đề B. Mệnh đề là một câu khẳng định đúng hoặc một câu khẳng định sai. Đáp án chính xác C. Mệnh đề vừa là một câu khẳng định đúng, vừa là một câu khẳng định sai. D. Mệnh đề là một câu hỏi. Trả lời Đáp án BA sai vì mệnh đề chứa biến còn phụ thuộc vào giá trị của biến – chưa kết luận tính đúng, sai. Do đó, mệnh đề chứa biến không là mệnh đềC sai vì mệnh đề phải đúng hoặc sai không vừa đúng vừa sai vì câu hỏi chưa biết đúng sai không là mệnh đề. ====== mời các bạn xem câu tiếp bên dưới ===== Trong các câu sau, câu nào là mệnh đề? Câu hỏi Trong các câu sau, câu nào là mệnh đề? A. 16 là số nguyên tố. Đáp án chính xác B. x + 1 chia hết cho 3. C. 2x + 1 = 5 D. x + 3 > 0 Trả lời Đáp án A16 là số nguyên tố => phát biểu sai => mệnh đáp án B,C,D với mỗi giá trị khác nhau của x thì các phát biểu vừa có thể đúng vừa có thể sai => không là mệnh đề. ====== mời các bạn xem câu tiếp bên dưới ===== Trong các mệnh đề sau, mệnh đề nào là mệnh đề đúng? Câu hỏi Trong các mệnh đề sau, mệnh đề nào là mệnh đề đúng? A. -x2 > 0 B. 7 không là số nguyên tố. C. 23 chia hết cho 2. D. 2 là số vô tỷ Đáp án chính xác Trả lời Đáp án D – x2≤0 mọi x 7 là số nguyên tố, 23 là số lẻ không chia hết cho 2 nên A,B,C là mệnh đề sai. 2 là số vô tỷ là mệnh đề đúng. ====== mời các bạn xem câu tiếp bên dưới ===== Trong các mệnh đề sau, mệnh đề nào là mệnh đề sai? Câu hỏi Trong các mệnh đề sau, mệnh đề nào là mệnh đề sai? A. 2 + 5 = 7 B. 14 là hợp số. C. 5 không là số nguyên. Đáp án chính xác D. 2–3>0 Trả lời Đáp án C 5 là số nguyên nên mệnh đề đáp án C là mệnh đề sai. ====== mời các bạn xem câu tiếp bên dưới ===== Mệnh đề phủ định của mệnh đề "4 + 5 = 9" là Câu hỏi Mệnh đề phủ định của mệnh đề “4 + 5 = 9” là A. 4 + 5 > 9 B. 4 + 5 ≠ 9 Đáp án chính xác C. 4 + 5 < 9 D. 4 + 5 = 9 Trả lời Đáp án BMệnh đề phủ định của mệnh đề đã cho là 4 + 5 ≠ 9 ====== mời các bạn xem câu tiếp bên dưới ===== Reader Interactions Một số câu hỏi khác có thể bạn quan tâm. 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 the West, cartoons are used chiefly to make people laugh. The important feature of all these cartoons is the joke and the element of surprise which is contained. Even though it is very funny, a good cartoon is always based on close observation of a particular feature of life and usually has a serious purpose. Cartoons in the West have been associated with political and social matters for many years. In wartime, for example, they proved to be an excellent way of spreading propaganda. Nowadays cartoons are often used to make short, sharp comments on politics and governments as well as on a variety of social matters. In this way, the modern cartoon has become a very powerful force in influencing people in Europe and the United States. Unlike most American and European cartoons, however, many Chinese cartoon drawings in the past have also attempted to educate people, especially those who could not read and write. Such cartoons about the lives and sayings of great men in China have proved extremely useful in bringing education to illiterate and semi- literate people throughout China. Confucius, Mencius and Laozi have all appeared in very interesting stories presented in the form of cartoons. The cartoons themselves have thus served to illustrate the teachings of the Chinese sages in a very attractive way. In this sense, many Chinese cartoons are different from Western cartoons in so far as they do not depend chiefly on telling jokes. Often, there is nothing to laugh at when you see Chinese cartoons. This is not their primary aim. In addition to commenting on serious political and social matters, Chinese cartoons have aimed at spreading the traditional Chinese thoughts and culture as widely as possible among the people. Today, however, Chinese cartoons have an added part to play in spreading knowledge. They offer a very attractive and useful way of reaching people throughout the world, regardless of the particular country in which they live. Thus, through cartoons, the thoughts and teachings of the old Chinese philosophers and sages can now reach people who live in such countries as Britain, France, America, Japan, Malaysia or Australia and who are unfamiliar with the Chinese culture. Until recently, the transfer of knowledge and culture has been overwhelmingly from the West to the East and not vice versa. By means of cartoons, however, publishing companies in Taiwan, Hong Kong and Singapore are now having success in correcting this imbalance between the East and the West. Cartoons can overcome language barriers in all foreign countries. The vast increase in the popularity of these cartoons serves to illustrate the truth of Confucius’s famous saying “One picture is worth a thousand words". Question The major differences between Chinese cartoons and Western cartoons come from their_. 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 the West, cartoons are used chiefly to make people laugh. The important feature of all these cartoons is the joke and the element of surprise which is contained. Even though it is very funny, a good cartoon is always based on close observation of a particular feature of life and usually has a serious purpose. Cartoons in the West have been associated with political and social matters for many years. In wartime, for example, they proved to be an excellent way of spreading propaganda. Nowadays cartoons are often used to make short, sharp comments on politics and governments as well as on a variety of social matters. In this way, the modern cartoon has become a very powerful force in influencing people in Europe and the United States. Unlike most American and European cartoons, however, many Chinese cartoon drawings in the past have also attempted to educate people, especially those who could not read and write. Such cartoons about the lives and sayings of great men in China have proved extremely useful in bringing education to illiterate and semi- literate people throughout China. Confucius, Mencius and Laozi have all appeared in very interesting stories presented in the form of cartoons. The cartoons themselves have thus served to illustrate the teachings of the Chinese sages in a very attractive way. In this sense, many Chinese cartoons are different from Western cartoons in so far as they do not depend chiefly on telling jokes. Often, there is nothing to laugh at when you see Chinese cartoons. This is not their primary aim. In addition to commenting on serious political and social matters, Chinese cartoons have aimed at spreading the traditional Chinese thoughts and culture as widely as possible among the people. Today, however, Chinese cartoons have an added part to play in spreading knowledge. They offer a very attractive and useful way of reaching people throughout the world, regardless of the particular country in which they live. Thus, through cartoons, the thoughts and teachings of the old Chinese philosophers and sages can now reach people who live in such countries as Britain, France, America, Japan, Malaysia or Australia and who are unfamiliar with the Chinese culture. Until recently, the transfer of knowledge and culture has been overwhelmingly from the West to the East and not vice versa. By means of cartoons, however, publishing companies in Taiwan, Hong Kong and Singapore are now having success in correcting this imbalance between the East and the West. Cartoons can overcome language barriers in all foreign countries. The vast increase in the popularity of these cartoons serves to illustrate the truth of Confucius’s famous saying "One picture is worth a thousand words." Question The pronoun “This” in paragraph 4 mostly refers 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 In the West, cartoons are used chiefly to make people laugh. The important feature of all these cartoons is the joke and the element of surprise which is contained. Even though it is very funny, a good cartoon is always based on close observation of a particular feature of life and usually has a serious purpose. Cartoons in the West have been associated with political and social matters for many years. In wartime, for example, they proved to be an excellent way of spreading propaganda. Nowadays cartoons are often used to make short, sharp comments on politics and governments as well as on a variety of social matters. In this way, the modern cartoon has become a very powerful force in influencing people in Europe and the United States. Unlike most American and European cartoons, however, many Chinese cartoon drawings in the past have also attempted to educate people, especially those who could not read and write. Such cartoons about the lives and sayings of great men in China have proved extremely useful in bringing education to illiterate and semi- literate people throughout China. Confucius, Mencius and Laozi have all appeared in very interesting stories presented in the form of cartoons. The cartoons themselves have thus served to illustrate the teachings of the Chinese sages in a very attractive way. In this sense, many Chinese cartoons are different from Western cartoons in so far as they do not depend chiefly on telling jokes. Often, there is nothing to laugh at when you see Chinese cartoons. This is not their primary aim. In addition to commenting on serious political and social matters, Chinese cartoons have aimed at spreading the traditional Chinese thoughts and culture as widely as possible among the people. Today, however, Chinese cartoons have an added part to play in spreading knowledge. They offer a very attractive and useful way of reaching people throughout the world, regardless of the particular country in which they live. Thus, through cartoons, the thoughts and teachings of the old Chinese philosophers and sages can now reach people who live in such countries as Britain, France, America, Japan, Malaysia or Australia and who are unfamiliar with the Chinese culture. Until recently, the transfer of knowledge and culture has been overwhelmingly from the West to the East and not vice versa. By means of cartoons, however, publishing companies in Taiwan, Hong Kong and Singapore are now having success in correcting this imbalance between the East and the West. Cartoons can overcome language barriers in all foreign countries. The vast increase in the popularity of these cartoons serves to illustrate the truth of Confucius’s famous saying “One picture is worth a thousand words. Question Which of the following clearly characterizes Western cartoons? 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 the West, cartoons are used chiefly to make people laugh. The important feature of all these cartoons is the joke and the element of surprise which is contained. Even though it is very funny, a good cartoon is always based on close observation of a particular feature of life and usually has a serious purpose. Cartoons in the West have been associated with political and social matters for many years. In wartime, for example, they proved to be an excellent way of spreading propaganda. Nowadays cartoons are often used to make short, sharp comments on politics and governments as well as on a variety of social matters. In this way, the modern cartoon has become a very powerful force in influencing people in Europe and the United States. Unlike most American and European cartoons, however, many Chinese cartoon drawings in the past have also attempted to educate people, especially those who could not read and write. Such cartoons about the lives and sayings of great men in China have proved extremely useful in bringing education to illiterate and semi- literate people throughout China. Confucius, Mencius and Laozi have all appeared in very interesting stories presented in the form of cartoons. The cartoons themselves have thus served to illustrate the teachings of the Chinese sages in a very attractive way. In this sense, many Chinese cartoons are different from Western cartoons in so far as they do not depend chiefly on telling jokes. Often, there is nothing to laugh at when you see Chinese cartoons. This is not their primary aim. In addition to commenting on serious political and social matters, Chinese cartoons have aimed at spreading the traditional Chinese thoughts and culture as widely as possible among the people. Today, however, Chinese cartoons have an added part to play in spreading knowledge. They offer a very attractive and useful way of reaching people throughout the world, regardless of the particular country in which they live. Thus, through cartoons, the thoughts and teachings of the old Chinese philosophers and sages can now reach people who live in such countries as Britain, France, America, Japan, Malaysia or Australia and who are unfamiliar with the Chinese culture. Until recently, the transfer of knowledge and culture has been overwhelmingly from the West to the East and not vice versa. By means of cartoons, however, publishing companies in Taiwan, Hong Kong and Singapore are now having success in correcting this imbalance between the East and the West. Cartoons can overcome language barriers in all foreign countries. The vast increase in the popularity of these cartoons serves to illustrate the truth of Confucius’s famous saying “One picture is worth a thousand words. Question ” Chinese cartoons have been useful as an important means 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 of the questions from 36 to 42 Perhaps it was his own lack of adequate schooling that inspired Horace Mann to work so hard for the important reforms in education that he accomplished. While he was still a boy, his father and older brother died, and he became responsible for supporting his family. Like most of the children in his town, he attended school only two or three months a year. Later, with the help of several teachers, he was able to study law and became a member of the Massachusetts bar, but he never forgot those early struggles. While serving in Massachusetts legislature, he signed a historic education bill that set up a state board of education. Without regret, he gave up his successful legal practice and political career to become the first secretary of the board. There he exercised an enormous inﬂuence during the critical period of reconstruction that brought into existence the American graded elementary school as substitute for the older distinct school system. Under his leadership, the curriculum was restructured, the school year was increased to a minimum of six months, and mandatory schooling was extended to age sixteen. Other important reforms included the establishment of state normal schools for teacher training, institutes for in-service teacher education, and lyceums for adult education. He was also instrument in improving salaries for teachers and creating school libraries. Mann’s ideas about school reform were developed and distributed in twelve annual reports to the state of Massachusetts that he wrote during his tenure as secretary of education. Considered quite radical at the time, the Massachusetts reforms later served as a model for the nation. Mann was recognized as the father of public education. Question 38 The word “struggles” in line 5 could best be replaced by 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 Perhaps it was his own lack of adequate schooling that inspired Horace Mann to work so hard for the important reforms in education that he accomplished. While he was still a boy, his father and older brother died, and he became responsible for supporting his family. Like most of the children in his town, he attended school only two or three months a year. Later, with the help of several teachers, he was able to study law and became a member of the Massachusetts bar, but he never forgot those early struggles. While serving in Massachusetts legislature, he signed a historic education bill that set up a state board of education. Without regret, he gave up his successful legal practice and political career to become the first secretary of the board. There he exercised an enormous inﬂuence during the critical period of reconstruction that brought into existence the American graded elementary school as substitute for the older distinct school system. Under his leadership, the curriculum was restructured, the school year was increased to a minimum of six months, and mandatory schooling was extended to age sixteen. Other important reforms included the establishment of state normal schools for teacher training, institutes for in-service teacher education, and lyceums for adult education. He was also instrument in improving salaries for teachers and creating school libraries. Mann’s ideas about school reform were developed and distributed in twelve annual reports to the state of Massachusetts that he wrote during his tenure as secretary of education. Considered quite radical at the time, the Massachusetts reforms later served as a model for the nation. Mann was recognized as the father of public education. Question 37 Which of the following describes Horace Mann’s early life ? 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 Perhaps it was his own lack of adequate schooling that inspired Horace Mann to work so hard for the important reforms in education that he accomplished. While he was still a boy, his father and older brother died, and he became responsible for supporting his family. Like most of the children in his town, he attended school only two or three months a year. Later, with the help of several teachers, he was able to study law and became a member of the Massachusetts bar, but he never forgot those early struggles. While serving in Massachusetts legislature, he signed a historic education bill that set up a state board of education. Without regret, he gave up his successful legal practice and political career to become the first secretary of the board. There he exercised an enormous inﬂuence during the critical period of reconstruction that brought into existence the American graded elementary school as substitute for the older distinct school system. Under his leadership, the curriculum was restructured, the school year was increased to a minimum of six months, and mandatory schooling was extended to age sixteen. Other important reforms included the establishment of state normal schools for teacher training, institutes for in-service teacher education, and lyceums for adult education. He was also instrument in improving salaries for teachers and creating school libraries. Mann’s ideas about school reform were developed and distributed in twelve annual reports to the state of Massachusetts that he wrote during his tenure as secretary of education. Considered quite radical at the time, the Massachusetts reforms later served as a model for the nation. Mann was recognized as the father of public education. Question 40 What did Horace Mann advocate ? 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 Perhaps it was his own lack of adequate schooling that inspired Horace Mann to work so hard for the important reforms in education that he accomplished. While he was still a boy, his father and older brother died, and he became responsible for supporting his family. Like most of the children in his town, he attended school only two or three months a year. Later, with the help of several teachers, he was able to study law and became a member of the Massachusetts bar, but he never forgot those early struggles. While serving in Massachusetts legislature, he signed a historic education bill that set up a state board of education. Without regret, he gave up his successful legal practice and political career to become the first secretary of the board. There he exercised an enormous inﬂuence during the critical period of reconstruction that brought into existence the American graded elementary school as substitute for the older distinct school system. Under his leadership, the curriculum was restructured, the school year was increased to a minimum of six months, and mandatory schooling was extended to age sixteen. Other important reforms included the establishment of state normal schools for teacher training, institutes for in-service teacher education, and lyceums for adult education. He was also instrument in improving salaries for teachers and creating school libraries. Mann’s ideas about school reform were developed and distributed in twelve annual reports to the state of Massachusetts that he wrote during his tenure as secretary of education. Considered quite radical at the time, the Massachusetts reforms later served as a model for the nation. Mann was recognized as the father of public education. Question 39 The word “regret” in line 7 could best be replaced by 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 Perhaps it was his own lack of adequate schooling that inspired Horace Mann to work so hard for the important reforms in education that he accomplished. While he was still a boy, his father and older brother died, and he became responsible for supporting his family. Like most of the children in his town, he attended school only two or three months a year. Later, with the help of several teachers, he was able to study law and became a member of the Massachusetts bar, but he never forgot those early struggles. While serving in Massachusetts legislature, he signed a historic education bill that set up a state board of education. Without regret, he gave up his successful legal practice and political career to become the first secretary of the board. There he exercised an enormous inﬂuence during the critical period of reconstruction that brought into existence the American graded elementary school as substitute for the older distinct school system. Under his leadership, the curriculum was restructured, the school year was increased to a minimum of six months, and mandatory schooling was extended to age sixteen. Other important reforms included the establishment of state normal schools for teacher training, institutes for in-service teacher education, and lyceums for adult education. He was also instrument in improving salaries for teachers and creating school libraries. Mann’s ideas about school reform were developed and distributed in twelve annual reports to the state of Massachusetts that he wrote during his tenure as secretary of education. Considered quite radical at the time, the Massachusetts reforms later served as a model for the nation. Mann was recognized as the father of public education. Question 36 Which of the following titles would best express the main topic of 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 from 36 to 42 Perhaps it was his own lack of adequate schooling that inspired Horace Mann to work so hard for the important reforms in education that he accomplished. While he was still a boy, his father and older brother died, and he became responsible for supporting his family. Like most of the children in his town, he attended school only two or three months a year. Later, with the help of several teachers, he was able to study law and became a member of the Massachusetts bar, but he never forgot those early struggles. While serving in Massachusetts legislature, he signed a historic education bill that set up a state board of education. Without regret, he gave up his successful legal practice and political career to become the first secretary of the board. There he exercised an enormous inﬂuence during the critical period of reconstruction that brought into existence the American graded elementary school as substitute for the older distinct school system. Under his leadership, the curriculum was restructured, the school year was increased to a minimum of six months, and mandatory schooling was extended to age sixteen. Other important reforms included the establishment of state normal schools for teacher training, institutes for in-service teacher education, and lyceums for adult education. He was also instrument in improving salaries for teachers and creating school libraries. Mann’s ideas about school reform were developed and distributed in twelve annual reports to the state of Massachusetts that he wrote during his tenure as secretary of education. Considered quite radical at the time, the Massachusetts reforms later served as a model for the nation. Mann was recognized as the father of public education. Question 42 How were Mann’s educational reforms distributed ?

trong các câu sau câu nào là mệnh đề