Một ống dây có độ tự cảm 0,4H, trong khoảng thời gian 0,04s, suất điện động tự cảm xuất hiện ở ống dây là 50V. Độ biến thiên cường độ dòng điện trong khoảng thời gian đó 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 45:

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

 Personal space is a term that refers (24)_____the distance we like to keep between ourselves and other people. When (25) ______we do not know well gets too close we usually begin to feel uncomfortable. If a business colleague comes closer than 1.2 meters, the most common response is to move (26)______. Some interesting (27)______have been done in libraries. If strangers come too close, many people get up and leave the building; others use different methods such as turning their back on the intruder. Living in cities has made people develop new skills for dealing with situations where they are very close to strangers. Most people on crowded trains try not to look at strangers; they avoid skin contact, and apologize if hands touch by mistake. People use newspapers (28) ______a barrier between themselves and other people, and if they do not have one, they stare into the distance, making sure they are not looking into anyone’s eyes.

Question 27:

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

 Personal space is a term that refers (24)_____the distance we like to keep between ourselves and other people. When (25) ______we do not know well gets too close we usually begin to feel uncomfortable. If a business colleague comes closer than 1.2 meters, the most common response is to move (26)______. Some interesting (27)______have been done in libraries. If strangers come too close, many people get up and leave the building; others use different methods such as turning their back on the intruder. Living in cities has made people develop new skills for dealing with situations where they are very close to strangers. Most people on crowded trains try not to look at strangers; they avoid skin contact, and apologize if hands touch by mistake. People use newspapers (28) ______a barrier between themselves and other people, and if they do not have one, they stare into the distance, making sure they are not looking into anyone’s eyes.

Question 28:

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

 Personal space is a term that refers (24)_____the distance we like to keep between ourselves and other people. When (25) ______we do not know well gets too close we usually begin to feel uncomfortable. If a business colleague comes closer than 1.2 meters, the most common response is to move (26)______. Some interesting (27)______have been done in libraries. If strangers come too close, many people get up and leave the building; others use different methods such as turning their back on the intruder. Living in cities has made people develop new skills for dealing with situations where they are very close to strangers. Most people on crowded trains try not to look at strangers; they avoid skin contact, and apologize if hands touch by mistake. People use newspapers (28) ______a barrier between themselves and other people, and if they do not have one, they stare into the distance, making sure they are not looking into anyone’s eyes.

Question 25:

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

 Personal space is a term that refers (24)_____the distance we like to keep between ourselves and other people. When (25) ______we do not know well gets too close we usually begin to feel uncomfortable. If a business colleague comes closer than 1.2 meters, the most common response is to move (26)______. Some interesting (27)______have been done in libraries. If strangers come too close, many people get up and leave the building; others use different methods such as turning their back on the intruder. Living in cities has made people develop new skills for dealing with situations where they are very close to strangers. Most people on crowded trains try not to look at strangers; they avoid skin contact, and apologize if hands touch by mistake. People use newspapers (28) ______a barrier between themselves and other people, and if they do not have one, they stare into the distance, making sure they are not looking into anyone’s eyes.

Question 26:

Read the passage and mark A, B, C or D to indicate the correct answer to each of the blanks:

 In a small village in North Yorkshire, there is a big old farmhouse ______(31) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ______(32) the repairs, and Alice takes care of the garden. Alice, George and Sue go out to work. Joe works at home ______(33) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away. The three families get ______(34) well, and enjoy their way of life. There are a few difficulties, of course. Their biggest worry at the moment is money - one of the cars needs replacing, and the roof needs some expensive repairs. But this isn't too serious - the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse ______(35) move to a luxury flat in a big city.

Question 31:         

Read the passage and mark A, B, C or D to indicate the correct answer to each of the blanks:

 In a small village in North Yorkshire, there is a big old farmhouse ______(31) three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and ______(32) the repairs, and Alice takes care of the garden. Alice, George and Sue go out to work. Joe works at home ______(33) computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away. The three families get ______(34) well, and enjoy their way of life. There are a few difficulties, of course. Their biggest worry at the moment is money - one of the cars needs replacing, and the roof needs some expensive repairs. But this isn't too serious - the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse ______(35) move to a luxury flat in a big city.

Question 32:         

Read the following passage and blacken the letter A, B, C or D on your answer sheet to indicate the correct word for each of the blanks in the following questions:

Dining Etiquette in Japan: An honored guest sits at the centre of the table furthest from the door and begins eating first. Learn to (1)_____chopsticks - never point them, never pierce food with them, and rest them on the chopstick-rest when breaking (2)_____drink or chat. It is good etiquette to try a bit of everything.
Dining Etiquette in Turkey: Meals are a (3)_____affair, conversations are friendly and loud. The head of the family of honored guest is served first. It is good etiquette to insist the most senior is served first (4)_____of you. Asking for (5)_____food is a compliment. If taken to a restaurant, Turkish dining etiquette has strict rules that the one who extended the invitation must pay.

Question 4:

Read the following passage and blacken the letter A, B, C or D on your answer sheet to indicate the correct word for each of the blanks in the following questions:

Dining Etiquette in Japan: An honored guest sits at the centre of the table furthest from the door and begins eating first. Learn to (1)_____chopsticks - never point them, never pierce food with them, and rest them on the chopstick-rest when breaking (2)_____drink or chat. It is good etiquette to try a bit of everything.
Dining Etiquette in Turkey: Meals are a (3)_____affair, conversations are friendly and loud. The head of the family of honored guest is served first. It is good etiquette to insist the most senior is served first (4)_____of you. Asking for (5)_____food is a compliment. If taken to a restaurant, Turkish dining etiquette has strict rules that the one who extended the invitation must pay.

Question 3:

Read the following passage and blacken the letter A, B, C or D on your answer sheet to indicate the correct word for each of the blanks in the following questions:

Dining Etiquette in Japan: An honored guest sits at the centre of the table furthest from the door and begins eating first. Learn to (1)_____chopsticks - never point them, never pierce food with them, and rest them on the chopstick-rest when breaking (2)_____drink or chat. It is good etiquette to try a bit of everything.
Dining Etiquette in Turkey: Meals are a (3)_____affair, conversations are friendly and loud. The head of the family of honored guest is served first. It is good etiquette to insist the most senior is served first (4)_____of you. Asking for (5)_____food is a compliment. If taken to a restaurant, Turkish dining etiquette has strict rules that the one who extended the invitation must pay.

Question 5: