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29 tháng 10 2021

(a+b)^2-(a-b)^2

25 tháng 1 2022

đề bài là gì vậy

25 tháng 1 2022

Một dãy vô hạn các số 1, 2, 3, 5, 8, 3, 1, 4, 5, 9, 4, ... theo sau bài toán sao cho bắt đầu từ số thứ ba, mỗi số bằng hàng đơn vị của tổng của hai số trong dãy liền trước nó. Số thứ 2019 của dãy là bao nhiêu? =)

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.    Probably the most famous film commenting on the twentieth-century technology is Modern Times, made in 1936. Charlie Chaplin was motivated to make the film by a reporter who, while interviewing him, happened to describe the working conditions in industrial Detroit. Chaplin was told that healthy young farm boys were lured to the city to work...
Đọc tiếp

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.

    Probably the most famous film commenting on the twentieth-century technology is Modern Times, made in 1936. Charlie Chaplin was motivated to make the film by a reporter who, while interviewing him, happened to describe the working conditions in industrial Detroit. Chaplin was told that healthy young farm boys were lured to the city to work on automotive assembly lines. Within four or five years, these young men’s health was destroyed by the stress of work in the factories.

    The film opens with a shot of a mass of sheep making their way down a crowded ramp.

Abruptly, the film shifts to a scene of factory workers jostling one another on their way to a factory. However, the rather bitter note of criticism in the implied comparison is not sustained. It is replaced by a gentle note of satire. Chaplin prefers to entertain rather than lecture.

    Scenes of factory interiors account for only about one-third of Modern Times, but they contain some of the most pointed social commentary as well as the most comic situations. No one who has seen the film can ever forget Chaplin vainly trying to keep pace with the fast-moving conveyor belt, almost losing his mind in the process. Another popular scene involves an automatic feeding machine brought to the assembly line so that workers need not interrupt their labor to eat. The feeding machine malfunctions, hurling food at Chaplin, who is strapped in his position on the assembly line and cannot escape. This serves to illustrate people’s utter helplessness in the face of machines that are meant to serve their basic needs.

Clearly, Modern Times has its faults, but it remains the best film treating technology within a social context. It does not offer a radical social message, but it does accurately reflect the sentiment of many who feel they are victims of an over-mechanised world.

The phrase “jostling one another” in the third paragraph is closest in meaning to “______”.

A. jogging side by side

B. pushing one another

C. hurrying up together

D. running against each other

1
25 tháng 12 2018

Đáp án B

jostling one another nghĩa là xô đẩy lẫn nhau, vậy đáp án B: pushing one another là gần nghĩa nhất

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 38 to 42. Probably the most famous film commenting on the twentieth-century technology is Modern Times, made in 1936. Charlie Chaplin was motivated to make the film by a reporter who, while interviewing him, happened to describe the working conditions in industrial Detroit. Chaplin was told that healthy young farm boys were lured to the city to work on...
Đọc tiếp

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 38 to 42.

Probably the most famous film commenting on the twentieth-century technology is Modern Times, made in 1936. Charlie Chaplin was motivated to make the film by a reporter who, while interviewing him, happened to describe the working conditions in industrial Detroit. Chaplin was told that healthy young farm boys were lured to the city to work on automotive assembly lines. Within four or five years, these young men’s health was destroyed by the stress of work in the factories.

The film opens with a shot of a mass of sheep making their way down a crowded ramp.

Abruptly, the film shifts to a scene of factory workers jostling one another on their way to a factory. However, the rather bitter note of criticism in the implied comparison is not sustained. It is replaced by a gentle note of satire. Chaplin prefers to entertain rather than lecture.

Scenes of factory interiors account for only about one-third of Modern Times, but they contain some of the most pointed social commentary as well as the most comic situations. No one who has seen the film can ever forget Chaplin vainly trying to keep pace with the fast-moving conveyor belt, almost losing his mind in the process. Another popular scene involves an automatic feeding machine brought to the assembly line so that workers need not interrupt their labor to eat. The feeding machine malfunctions, hurling food at Chaplin, who is strapped in his position on the assembly line and cannot escape. This serves to illustrate people’s utter helplessness in the face of machines that are meant to serve their basic needs.

Clearly, Modern Times has its faults, but it remains the best film treating technology within a social context. It does not offer a radical social message, but it does accurately reflect the sentiment of many who feel they are victims of an over-mechanised world.

The phrase “jostling one another” in the third paragraph is closest in meaning to “____”.

A. jogging side by side            

B. pushing one another

C. hurrying up together          

D. running against each other

1
15 tháng 2 2017

Đáp án B
jostling one another nghĩa là xô đẩy lẫn nhau, vậy đáp án B: pushing one another là gần nghĩa nhất

23 tháng 4 2017

Kiến thức: Rút gọn mệnh đề quan hệ

Giải thích:

Dùng hiện tại phân từ (V_ing) để rút gọn cho mệnh đề quan hệ mang nghĩa chủ động.

Câu đầy đủ: A paragraph is a portion of a text which consists of one or more sentences related to the same idea.

Câu rút gọn: A paragraph is a portion of a text consisting of one or more sentences related to the same idea.

Sửa: consists of => consisting of

Tạm dịch: Một đoạn văn là một phần của một bài văn ngắn mà bao gồm một hoặc nhiều câu có liên quan đến một chủ đề giống nhau.

Chọn A

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.    Animals have an intuitive awareness of quantities. They know without analysis the difference between a number of objects and a smaller number. In his book "The Natural History of Selboure" (1786), the naturalist Gilbert White tells how he surreptitiously removed one egg a day from a plover's nest, and how the mother laid another egg each day to make up for...
Đọc tiếp

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.

    Animals have an intuitive awareness of quantities. They know without analysis the difference between a number of objects and a smaller number. In his book "The Natural History of Selboure" (1786), the naturalist Gilbert White tells how he surreptitiously removed one egg a day from a plover's nest, and how the mother laid another egg each day to make up for the missing one. He noted that other species of birds ignore the absence of a single egg but abandon their nest if more than one egg has been removed. It has also been noted by naturalists that a certain type of wasp always provides five - never four, never six - caterpillars for each of their eggs so that their young have something to eat when the eggs hatch. Research has also shown that both mice and pigeons can be taught to distinguish between odd and even numbers of food pieces.

    These and similar accounts have led some people to infer that creatures other than humans can actually count. They also point to dogs that have been taught to respond to numerical questions with the correct number of banks, or to horses that seem to solve arithmetic problems by stomping their hooves the proper number of times.

          Animals respond to quantities only when they are connected to survival as a species - as in the case of the eggs - or survival as individuals - as in the case of food. There is no transfer to other situations of from concrete reality to the abstract notion of numbers. Animals can "count" only when the objects are present and only when the numbers involved are small - not more than seven or eight. In lab experiments, animals trained to "count" one kind of object were unable to count any other type. The object, not the numbers, are what interest them. Animals' admittedly remarkable achievements simply do not amount to evidence of counting, nor do they reveal more than innate instincts, refined by the genes of successive generations, or the results of clever, careful conditioning by trainers.

Why does the author refer to Gilbert White's book in line 2?

A. To contradict the idea that animals can count

B. To provide evidence that some birds are aware of quantities

C. To show how attitudes have changed since 1786.

D. To indicate that more research is needed in this field

1
19 tháng 2 2019

Đáp án B.

Key words: Gilbert White's book.

Clue: In his book "The Natural History of Selboure" (1786), the naturalist Gilbert White tells how he surreptitiously removed one egg a day from a plover's nest, and how the mother laid another egg each day to make up for the missing one: Trong cuốn sách "Lịch sử Tự nhiên của Selboure" (1786), nhà tự nhiên học Gilber White kể rằng ông đã lén lấy đi một quả trứng trong tổ chim choi choi và mỗi ngày chim mẹ đều đặt một quả trứng khác vào để bù cho quả trứng đã mất.

          A. To contradict the idea that animals can count: để phản bác lại ý kiến rằng động vật có thể đếm.

          B. To provide evidence that some birds are aware of quantities: để cung cấp bằng chứng rằng một số loài chim nhận thức được số lượng.

          C. To show how attitudes have changed since 1786: để chỉ ra thái độ đã thay đổi như thế nào kể từ năm 1786.

          D. To indicate that more research is needed in this field: để chỉ ra rằng lĩnh vực này cần nhiều nghiên cứu hơn.

Dễ thấy đáp án chính xác là đáp án B.

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from (46)to (55) Animals have an intuitive awareness of quantities. They know without analysis the difference between a number of objects and a smaller number. In his book " The natural History of Selboure " (1786 ) , the naturalist Gilbert White tells how he surreptitiously removed one egg a day from a plover's nest , and how the mother laid another egg each day to...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from (46)to (55)

Animals have an intuitive awareness of quantities. They know without analysis the difference between a number of objects and a smaller number. In his book " The natural History of Selboure " (1786 ) , the naturalist Gilbert White tells how he surreptitiously removed one egg a day from a plover's nest , and how the mother laid another egg each day to make up for the missing one . He noted that other species of birds ignore the absence of a single egg but abandon their nests if more than one egg has been removed. It has also been noted by naturalists that a certain type of wasp always provides five - never four, never six - caterpillars for each of their eggs so that their young have something to eat when the eggs hatch . Research has also shown that both mice and pigeons can be taught to distinguish between odd and even numbers of food pieces.

These and similar accounts have led some people to infer that creatures other than humans can actually count. They also point to dogs that have been taught to respond to numerical questions with the correct number of barks, or to horses that seem to solve arithmetic problems by stomping their hooves the proper number of times.

Animals respond to quantities only when they are connected to survival as a species - as in the case of the eggs - or survival as individuals - as in the case of food. There is no transfer to other situations or from concrete reality to the abstract notion of numbers. Animals can "count" only when the objects are present and only when the numbers involved are small - not more than seven or eight. In lab experiments, animals trained to "count" one kind of object were unable to count any other type. The objects, not the numbers, are what interest them. Animals’ admittedly remarkable achievements simply do not amount to evidence of counting, nor do they reveal more than innate instincts, refined by the genes of successive generations, or the results of clever, careful conditioning by trainers.

Why does the author refer to Gilbert White's book in line 2?

A. To indicate that more research is needed in this field.

B. To contradict the idea that animals can count

C. To show how attitudes have changed since1786

D. To provide evidence that some birds are aware of quantities.

1
17 tháng 1 2017

Đáp án là D. Có thể dựa vào đoạn giải thích sau đó để chọn đáp án này: other species of birds ignore the absence of a single egg but abandon their nests if more than one egg has been removed

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           Animals have an intuitive awareness of quantities. They know without analysis the difference between a number of objects and a smaller number. In his book “ The natural History of Selboure ” (1786 ) , the naturalist Gilbert White tells how he surreptitiously removed one egg a day from a plover‟s nest , and how the mother laid...
Đọc tiếp

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

          Animals have an intuitive awareness of quantities. They know without analysis the difference between a number of objects and a smaller number. In his book “ The natural History of Selboure ” (1786 ) , the naturalist Gilbert White tells how he surreptitiously removed one egg a day from a plover‟s nest , and how the mother laid another egg each day to make up for the missing one . He noted that other species of birds ignore the absence of a single egg but abandon their nests if more than one egg has been removed. It has also been noted by naturalists that a certain type of wasp always provides five – never four, never six - caterpillars for each of their eggs so that their young have something to eat when the eggs hatch . Research has also shown that both mice and pigeons can be taught to distinguish between odd and even numbers of food pieces.
          These and similar accounts have led some people to infer that creatures other than humans can actually count. They also point to dogs that have been taught to respond to numerical questions with the correct number of barks, or to horses that seem to solve arithmetic problems by stomping their hooves the proper number of times.
          Animals respond to quantities only when they are connected to survival as a species – as in the case of the eggs – or survival as individuals - as in the case of food. There is no transfer to other situations or from concrete reality to the abstract notion of numbers. Animals can “count” only when the objects are present and only when the numbers involved are small – not more than seven or eight. In lab experiments, animals trained to “count” one kind of object were unable to count any other type. The objects, not the numbers, are what interest them. Animals admittedly remarkable achievements simply do not amount to evidence of counting, nor do they reveal more than innate instincts, refined by the genes of successive generations, or the results of clever, careful conditioning by trainers

Why does the author refer to Gilbert White‟s book in line 2?

A. To indicate that more research is needed in this field

B. To show how attitudes have changed since1786

C. To provide evidence that some birds are aware of quantities

D. To contradict the idea that animals can count

1
25 tháng 6 2017

Đáp án C

Mục đích của tác giả là đưa ra một số dẫn chứng chứng minh rằng, các loài chim có sự nhận thức về số lượng: the naturalist Gilbert White tells how he surreptitiously removed one egg a day from a plover‟s nest , and how the mother laid another egg each day to make up for the missing one. He noted that other species of birds ignore the absence of a single egg but abandon their nests if more than one egg has been removed

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.    Animals have an intuitive awareness of quantities. They know without analysis the difference between a number of objects and a smaller number. In his book "The Natural History of Selboure" (1786), the naturalist Gilbert White tells how he surreptitiously removed one egg a day from a plover's nest, and how the mother laid another egg each day to make up for...
Đọc tiếp

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.

    Animals have an intuitive awareness of quantities. They know without analysis the difference between a number of objects and a smaller number. In his book "The Natural History of Selboure" (1786), the naturalist Gilbert White tells how he surreptitiously removed one egg a day from a plover's nest, and how the mother laid another egg each day to make up for the missing one. He noted that other species of birds ignore the absence of a single egg but abandon their nest if more than one egg has been removed. It has also been noted by naturalists that a certain type of wasp always provides five - never four, never six - caterpillars for each of their eggs so that their young have something to eat when the eggs hatch. Research has also shown that both mice and pigeons can be taught to distinguish between odd and even numbers of food pieces.

    These and similar accounts have led some people to infer that creatures other than humans can actually count. They also point to dogs that have been taught to respond to numerical questions with the correct number of banks, or to horses that seem to solve arithmetic problems by stomping their hooves the proper number of times.

    Animals respond to quantities only when they are connected to survival as a species - as in the case of the eggs - or survival as individuals - as in the case of food. There is no transfer to other situations of from concrete reality to the abstract notion of numbers. Animals can "count" only when the objects are present and only when the numbers involved are small - not more than seven or eight. In lab experiments, animals trained to "count" one kind of object were unable to count any other type. The object, not the numbers, are what interest them. Animals' admittedly remarkable achievements simply do not amount to evidence of counting, nor do they reveal more than innate instincts, refined by the genes of successive generations, or the results of clever, careful conditioning by trainers.

The word "surreptitiously" is closest in meaning to ________.

A. stubbornly

B. secretly

C. quickly

D. occasionally

1
21 tháng 10 2018

Đáp án B.

Key words: surreptitiously, closest in meaning.

          A. stubbornly: cứng đầu

          B. secretly: bí mật, kín đáo, giấu giếm

          C. quickly: nhanh chóng

          D. occasionally: thỉnh thoảng

- surreptitiously: lén lút, gian lận, lừa dối.

Vậy đáp án chính xác là đáp án B.

9 tháng 12 2016

if the right solution for you will k.