Cho đường tròn tâm I (3;2) bán kính r = 5 phép tịnh tiến theo vectơ v (1;2) biến đường tròn đã cho thành đường tròn (I';R') khi đó I'có tọa độ bao nhiêu và R'bằngbao nhiêu.

Trong mặt phẳng Oxy cho 3 điểm A(2 ;0) B(0;2) C (0;7) tìm toa độ đỉnh thứ 4 D của hình thang cân ABCD

Đọc đoạn văn sau và thực hiện yêu cầu một chàng trai trẻ xin làm người giúp việc cho một nông trại khi người chủ hỏi anh có thể làm được điều gì anh nói tôi vẫn ngủ được khi trời giông bão câu trả lời hơi khó hiểu này là người chủ nong trại bối rối nhưng vì có cảm tình với chàng trai trẻ nên ông thu nhận anh một vài ngày sau người chủ và vợ ông chợt tỉnh giấc giữa đêm khuya một cơn lốc họ vội kiểm tra mọi thứ trong nhà thì thấy các cánh cửa đã được đóng kĩ nóng cu được cất gọn gàng trong kho máy cày đã được cho vào nhà xe và chuồng gia súc được Khóa cẩn thận ngay cả những con vật cũng nó tỏ ra không hề sợ hãi mọi thứ đều an toàn và chàng trai vẫn ngủ ngon lành

câu 1 Xác định nội dung chính của đoạn trích trên Câu 2 vì sao chàng trai vẫn có thể ngủ ngon khi trời giông bão

Câu 3 người chủ hiểu được điều gì lời của chàng trai trước kia

Câu 4 Theo em cần làm gì để có thể ngủ ngon khi gặp những biến cố bất ngờ

Phân tích nhân vật rama trong văn bản ra mà buộc tội

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 this era of increased global warming and diminishing fossil fuel supplies, we must begin to put a greater priority on harnessing alternative energy sources. Fortunately, there are a number of readily available, renewable resources that are both cost- effective and earth - friendly. Two such resources are solar power and geothermal power.

        Solar energy, which reaches the earth through sunlight, is so abundant that it could meet the needs of worldwide energy consumption 6,000 times over. And solar energy is easily harnessed through the use of photovoltaic cells that convert sunlight to electricity. In the US alone, more than 100, 000 homes are equipped with solar electric systems in the form of solar panels or solar roof tiles. And in other parts of the world, including many developing countries, the use of solar system is growing steadily.

       Another alternative energy source, which is abundant in specific geographical areas, is geothermal power, which creates energy by tapping heat from below the surface of the earth. Hot water and steam that are trapped in underground pools are pumped to the surface and used to run a generator, which produces electricity. Geothermal energy is 50,000 times more abundant than the entire known supply of fossil fuel resources and as with solar power, the technology needed to utilize geothermal energy is fairly simple. A prime example of effective geothermal use in Iceland, a region of high geothermal activity where there are over 80 percent of private homes, are heated by geothermal power.

       Solar and geothermal energy are just two of promising renewable alternatives to conventional energy sources. The time is long overdue to invest in the development and use of alternative energy on global scale.

According to the passage, which of the following is true about solar power?

A. There is very little of it available in Iceland.

B. It is being used in 100, 000 private homes worldwide.

C. It is 6,000 times more powerful than energy from fossil fuels.

D. There is enough of it to far exceed the energy needs of the world.

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Students suppose (A) to read all the questions (B) carefully and find out (C) the answers to them (D).

A. suppose

B. all the questions 

C. out

D. them 

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

To his dismay, his name was not on the list.

A. disappointment

B. depression

C. happiness

D. pessimism

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions

A. medicine

B. graduate  

C. confident

D. encourage 

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 35 to 42.

        Industrialization came to the United State after 1790 as North American entrepreneurs increased productivity by reorganizing work and building factories. These innovations in manufacturing boosted output and living standards to an unprecedented extent; the average per capita wealth increased by nearly 1 percent per year - 30 percent over the course of a generation. Goods that had once been luxury items became part of everyday life.

        The impressive gain in output stemmed primarily from the way in which workers made goods, since the 1790’s, North American entrepreneurs - even without technological improvements - had broadened the scope of the outwork system that made manufacturing more efficient by distributing materials to a succession of workers who each performed a single step of the production process. For example, during the 1820’s and 1830’s the shoe industry greatly expanded the scale of the outwork system. Tens of thousands of rural women, paid according to the amount they produced, fabricated the “uppers” of shoes, which were bound to the soles by wage-earning journeymen shoemakers in dozens of Massachusetts towns, whereas previously journeymen would have made the enduring shoe. This system of production made the employer a powerful “shoe boss” and eroded workers’ control over the pace and conditions of labor. However, it also dramatically increased the output of shoes while cutting their price.

        For tasks that were not suited to the outwork system, entrepreneurs created an even more important new organization, the modem factory, which used power-driven machines and assembly­line techniques to turn out large quantities of well-made goods. As early as 1782 the prolific Delaware inventor Oliver Evans had built a highly automated, laborsaving flour mill driven by water power. His machinery lifted the grain to the top of the milt, cleaned it as it fell into containers known as hoppers, ground the grain into flour, and then conveyed the flour back to the top of the mill to allow it to cool as it descended into barrels. Subsequently, manufacturers made use of new improved stationary steam engines to power their mills. This new technology enabled them to build factories in the nation’s largest cities, taking advantage of urban concentrations of inexpensive labor, good transportation networks, and eager customers.

According to the passage, how did later mills differ from the mills built by Oliver Evans?

A. They were located away from large cities

B. They used new technology to produce power

C. They did not allow flour to cool before it was placed in Barrels

D. They combined technology with the outwork system