Hãy nêu những tác động của ngành Giao thông vận tải đến nền kinh tế thế giới. Mình cần khá gấp, mong mọi người giúp đỡ, cảm ơn nhiều ạ

Tổng thống Mĩ A. Lin - côn (1809 - 1865) viết: "xin thầy hãy dạy cho cháu biết chấp nhận thi rớt còn vinh dự hơn gian lận khi thi”. Anh/ chị hãy trình bày suy nghĩ của mình về đức tính trung thực trong thi cử và trong cuộc sống

Giúp mình với mai mình cần rồi. Cảm ơn mọi người

Hòa tan hoàn toàn 8,1g 1 hỗn hợp Na và Mg vào dung dịch H2SO4 (20%). sau phản ứng thu được4,48 lít khí H2 ở đktc

a) Xác định thành phần % của các chất trong hỗn hợp

b) tính C% của dung dịch thu được sau phản ứng

Cho tam giác vuông tại A, đường cao AH. Kẻ HE vuông góc với AB, HF vuông góc với AC

a) Chứng minh rằng EB/FC=(AB/AC)^3

b) Tính Diện tích của tam giác EHF biết AH= 6cm, BC= 13 cm

c) Chứng minh rằng BC*BE*CF=AH^3

Mọi người giúp mình với! Mai mình kiểm tra mất rồi

Read the passages and circle the best option A, B, C, or D to complete the following questions or statements

Alexis de Tocqueville, the French political scientist, historian, philosopher and politician, is most famous for a four-volume book he wrote called “Democracy in America”. He came to America in 1831 to study the American form of democracy and what it might mean to the rest of the world. After a visit of only nine months, he wrote a remarkable book which is regarded as a classic. De Tocqueville had unusual powers of observation. He described not only the democratic system of government and how it operated, but also its effect on how Americans think, feel, and act. Many scholars believe he had a deeper understanding of traditional American beliefs and values than anyone else who has written about the United States. What is so remarkable is that many of these traits which he observed nearly 200 years ago, are still visible and meaningful today. His observations are also important because the timing of his visit, the 1830s, was before America was industrialized. This was the era of the small farmer, the small businessman, and the settling of the western frontier. It was the period of history when the traditional values of the new country were newly established. In just a generation, some 40 years since the adoption of the U.S. Constitution, the new form of government had already produced a society of people with unique values. He was, however, a neutral observer and saw both the good and bad sides of these qualities.

The first part of “Democracy in America” was written in 1831-32 and published in 1835. A highly positive and optimistic account of American government and society, the book was very well received. He attempted to get a glimpse of the essence of American society, all the while promoting his own philosophy: the equaling of the classes and the inevitable depth of aristocratic privilege. The rest of the book he labored on for four years, and in 1840 the second part was published. This was substantially more pessimistic than the first, warning of the dangers despotism and governmental centralization, and applying his ideas and criticisms more directly to France. As a result, it was not received as well as the first part, except in England where it was acclaimed highly.

All of the following fields of professional interest and activity are used to describe de Tocqueville EXCEPT 

A. politician 

B. political scientist 

C. philosopher 

D. author

Mark the letter A, B, Cor D on your answer sheet to indicate the correct answer to each of the following questions

_______ inventions and discoveries have been made by accident. 

A. A large number of 

B. Lots 

C. A great deal of 

D. Plenty