Đơn vị đo độ dài hợp pháp của Việt Nam là

Muốn đo khối lượng riêng của bình thủy tinh , ta cần dùng những dụng cụ gì ?

Khi sử dụng ròng rọc động thì được lợi gì?

Trong số các thước dưới đây , thước nào thích hợp nhất để đo chiều dài sân trường em ?

Khi sử dụng bình tràn và bình chứa để đo thể tích vật rắn không thấm nước thì thể tích của vật bằng:

Các từ thích hợp điền vào chỗ trống trong các câu dưới đây là: - Trọng lực là ...... của Trái Đất. - Trọng lực có phương........ và có ......hướng về phía Trái Đất. - Đơn vị lực là......Kí hiệu N.

Trong một mạch điện kín, để có dòng điện chạy trong mạch thì trong mạch đó nhất thiết phải có bộ phận nào sau đây?

Đơn vị đo độ dài hợp pháp của Việt Nam là

Các máy cơ đơn giản gồm:

Lực nào dưới đây là lực đàn hồi ?

Khi treo một quả nặng vào đầu dưới của một lò xo thì chiều dài lò xo là 98 cm. Biết độ biến dạng của lò xo khi đó là 2 cm. Vậy chiều dài tự nhiên (chiều dài ban đầu) của lò xo là

Tính chất hóa học đặc trưng của các kim loại là?           

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phases that best fits each of the numbered blanks from 34 to 38:

People have always dreamt of living forever. Although we all know this will never happen, we will want to live as long as possible. __(34)__, there are advantages and disadvantages of a long life.In the first place, people who live longer can spend more time with their family and friends. Secondly, __(35)__ have busy working lives look forward to a long, relaxing life, when they can do the things they‘ve never had time for. __(36)__, there are some serious disadvantages. Firstly, many people become ill and consequently have to spend time in hospital or become burden __(37)__ the children and friends. Many of them find this dependence annoying or embarrassing. In addition to this, __(38)__ the fewer friends they seem to have because old friends die or become and it’s often difficult to make new friends. To sum up, living to a very old age is worthwhile for those who stay healthy enough to remain independent and enjoy life.

Question 34:

Chia 2m gam hỗn hợp X gồm 2 kim loại có hoá trị không đổi thành 2 phần bằng nhau. Cho phần một tan hết trong dung dịch HCl (dư) thu được 2,688 lít H2 (đo ở đktc). Nung nóng phần hai trong oxi (dư) thu được 4,26 gam hỗn hợp oxit. Giá trị của m là:         

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate to the word or phrase that best fits each of the numbered blanks from 44 to 50:         

Vietnam is considered a third world country, its people live (44) _____ poverty by the millions. After the (45) _____, Vietnam's economy remained dominated by small-scale production, low labor productivity, unemployment, material and technological shortfalls, and insufficient food and (46) _____ goods. The Doi Moi reforms that were instated in 1986 have shed new light and added new features to the Vietnamese economy. (47) ____ Vietnamese Communist Party plays a leading role in establishing the foundations and principles of communism, mapping strategies for economic development, setting growth targets, and launching reforms. Doi Moi combined government planning with free-market incentives and (48) _____ the establishment of private businesses and foreign investment, including foreign-owned enterprises. By the late 1990s, the success of the business and agricultural reforms ushered in under Doi Moi was evident. (49) _____ than 30,000 private businesses had been created, and the economy was growing at an annual rate of more than 7 percent. Farming systems research and the international development projects are a source of new hope for the people of Vietnam. If these recent projects are successful and Doi Moi continues on its current path the Vietnamese people may (50) _____ a new standard of living. More reforms like Doi Moi need to take place in order to create a more stable Vietnamese future. 

Question 48:

Phát biểu không đúng là         

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate to the word or phrase that best fits each of the numbered blanks from 44 to 50          Vietnam is considered a third world country, its people live (44) _____ poverty by the millions. After the (45) _____, Vietnam's economy remained dominated by small-scale production, low labor productivity, unemployment, material and technological shortfalls, and insufficient food and (46) _____ goods. The Doi Moi reforms that were instated in 1986 have shed new light and added new features to the Vietnamese economy. (47) ____ Vietnamese Communist Party plays a leading role in establishing the foundations and principles of communism, mapping strategies for economic development, setting growth targets, and launching reforms. Doi Moi combined government planning with free-market incentives and (48) _____ the establishment of private businesses and foreign investment, including foreign-owned enterprises. By the late 1990s, the success of the business and agricultural reforms ushered in under Doi Moi was evident. (49) _____ than 30,000 private businesses had been created, and the economy was growing at an annual rate of more than 7 percent. Farming systems research and the international development projects are a source of new hope for the people of Vietnam. If these recent projects are successful and Doi Moi continues on its current path the Vietnamese people may (50) _____ a new standard of living. More reforms like Doi Moi need to take place in order to create a more stable Vietnamese future   Question 47:

Hòa tan hỗn hợp X chứa 12 gam Fe và Cu vào dung dịch HCl loãng dư thu được 3,36 lít H2 (đktc). % khối lượng Fe trong X là           

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate to the word or phrase that best fits each of the numbered blanks from 44 to 50:         

Vietnam is considered a third world country, its people live (44) _____ poverty by the millions. After the (45) _____, Vietnam's economy remained dominated by small-scale production, low labor productivity, unemployment, material and technological shortfalls, and insufficient food and (46) _____ goods. The Doi Moi reforms that were instated in 1986 have shed new light and added new features to the Vietnamese economy. (47) ____ Vietnamese Communist Party plays a leading role in establishing the foundations and principles of communism, mapping strategies for economic development, setting growth targets, and launching reforms. Doi Moi combined government planning with free-market incentives and (48) _____ the establishment of private businesses and foreign investment, including foreign-owned enterprises. By the late 1990s, the success of the business and agricultural reforms ushered in under Doi Moi was evident. (49) _____ than 30,000 private businesses had been created, and the economy was growing at an annual rate of more than 7 percent. Farming systems research and the international development projects are a source of new hope for the people of Vietnam. If these recent projects are successful and Doi Moi continues on its current path the Vietnamese people may (50) _____ a new standard of living. More reforms like Doi Moi need to take place in order to create a more stable Vietnamese future.  

Question 50:

Hòa tan hết 20,4 hỗn hợp X gồm (Fe, Al2O3, Fe2O4) bằng dung dịch Y chứa (0,25 mol ion , 1 mol và ). Sau phản ứng thu đươc 3,92 lít khí H2 (đktc) và dung dịch Z không còn .Cô cạn dung dịch Z thu được bao nhiêu muối khan?                   

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate to the word or phrase that best fits each of the numbered blanks from 44 to 50:         

Vietnam is considered a third world country, its people live (44) _____ poverty by the millions. After the (45) _____, Vietnam's economy remained dominated by small-scale production, low labor productivity, unemployment, material and technological shortfalls, and insufficient food and (46) _____ goods. The Doi Moi reforms that were instated in 1986 have shed new light and added new features to the Vietnamese economy. (47) ____ Vietnamese Communist Party plays a leading role in establishing the foundations and principles of communism, mapping strategies for economic development, setting growth targets, and launching reforms. Doi Moi combined government planning with free-market incentives and (48) _____ the establishment of private businesses and foreign investment, including foreign-owned enterprises. By the late 1990s, the success of the business and agricultural reforms ushered in under Doi Moi was evident. (49) _____ than 30,000 private businesses had been created, and the economy was growing at an annual rate of more than 7 percent. Farming systems research and the international development projects are a source of new hope for the people of Vietnam. If these recent projects are successful and Doi Moi continues on its current path the Vietnamese people may (50) _____ a new standard of living. More reforms like Doi Moi need to take place in order to create a more stable Vietnamese future. 

Question 49: