Câu 4 : Cho 3,9g Kali tác dụng với 1 halogen X thu được 11,9 gam muối. Xác định X.

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Read the following passage and mark letter A, B, C or D on your answer sheet to indicate the word that best fits each of the numbered blanks. Unlike life in the countryside, which is often considered to be simple and traditional, life in cities is modern and complicated. People, from different regions, move to cities to seek a better life for them and their children. The inhabitants in cities work as secretaries, businessmen, teachers, government employees, factory workers and even street vendors or construction workers. The high cost of living requires city dwellers, especially those with low incomes, to work harder or to take part-time jobs. For many people, an ordinary day starts as usual by getting up in the early morning to do exercise in public parks, preparing for a full day of work and study, then travelling along boulevards or narrow streets filled with motorists and returning home after a busy day. They usually live in large houses, or high-rise apartment blocks or even in small rented rooms equipped with modern facilities, like the Internet, telephones, televisions, and so on. Industrialization and modernization as well as global integration have big impacts on the lifestyle in cities. The most noticeable impact is the Western style of clothing. The“Ao Dai” – Vietnamese women’s traditional dresses are no longer worn in their daily life. Instead, jeans, T-shirts and fashionable clothes are widely preferred. Industrialization and modernization may lead to __________ A: the fact that women no longer wear Ao Dai B: some changes in lifestyle C: the disappearance of Western-styled clothing D: global integration 18 Mark letter A, B, C or D on your answer sheet to indicate the meaningful sentence from the cues given. number/ Vietnamese student/ study/ overseas/ increase/ considerable/. A: The number of Vietnamese students studying overseas has increased considerably. B: Number of Vietnamese students to study overseas has increased considerably. C: The number of Vietnamese students study overseas has increased considerable. D: The number of Vietnamese students studying overseas have increased considerable. 19 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. Nam asked Mai what he can do to help her. A: asked B: to help C: her D: he can 20 Mark letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to the original sentence in each of the following questions. Unless you see Tom, you will not know the truth. A: You will not see Tom, so you will not know the truth. B: You know the truth, but you will not see Tom. C: You cannot know the truth because you have seen Tom. D: You will know the truth if you see Tom. 21 Read the following passage about Chu Van An High School in Ha Noi, and mark the letter A, B, C or D on your answer sheet to indicate the correct word that best fits each of the numbered blanks. Chu Van An High School is one of the oldest and most prestigious public schools in Viet Nam. Established (23) _______ 1908 by the French, the school is located by the West Lake, and was originally named (24) _______ the location it was in. It is a very pleasant, spacious school with a great view of the lake from the classroom windows. In 1943, the school was moved to Ninh Binh, and was moved back to Ha Noi in 1945. In that year, the school was renamed Chu Van An after a famous Vietnamese Confucianism teacher of the Tran Dynasty. Professor Nguyen Gia Tuong (25) _______ the first Vietnamese principal of the school. Many famous people like ex-Prime Minister Pham Van Dong, Doctor Ton That Tung and poet Xuan Dieu used to be the school’s students. Today, the school is still located in the same area and has maintained its prestige, as well as its reputation as one of the top high schools in Ha Noi. It is very difficult (26) _______ to the school. Every year, there are around three thousand (27) _______ but only about five hundred of them are admitted. Those applicants have to take an entrance examination conducted by the Department of Education and Training of Ha Noi. A: applicants B: student C: visitors D: teachers

13 Read the following passage about Chu Van An High School in Ha Noi, and mark the letter A, B, C or D on your answer sheet to indicate the correct word that best fits blank (24). Chu Van An High School is one of the oldest and most prestigious public schools in Viet Nam. Established (23) _______ 1908 by the French, the school is located by the West Lake, and was originally named (24) _______ the location it was in. It is a very pleasant, spacious school with a great view of the lake from the classroom windows. In 1943, the school was moved to Ninh Binh, and was moved back to Ha Noi in 1945. In that year, the school was renamed Chu Van An after a famous Vietnamese Confucianism teacher of the Tran Dynasty. Professor Nguyen Gia Tuong (25) _______ the first Vietnamese principal of the school. Many famous people like ex-Prime Minister Pham Van Dong, Doctor Ton That Tung and poet Xuan Dieu used to be the school’s students. Today, the school is still located in the same area and has maintained its prestige, as well as its reputation as one of the top high schools in Ha Noi. It is very difficult (26) _______ to the school. Every year, there are around three thousand (27) _______ but only about five hundred of them are admitted. Those applicants have to take an entrance examination conducted by the Department of Education and Training of Ha Noi. A: after B: about C: for D: with 14 Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. That’s too expensive! I suggest __________ by train. A: going B: to go C: to going D: go 15 Read the following passage and mark letter A, B, C or D on your answer sheet to indicate the word that best fits each of the numbered blanks. Unlike life in the countryside, which is often considered to be simple and traditional, life in cities is modern and complicated. People, from different regions, move to cities to seek a better life for them and their children. The inhabitants in cities work as secretaries, businessmen, teachers, government employees, factory workers and even street vendors or construction workers. The high cost of living requires city dwellers, especially those with low incomes, to work harder or to take part-time jobs. For many people, an ordinary day starts as usual by getting up in the early morning to do exercise in public parks, preparing for a full day of work and study, then travelling along boulevards or narrow streets filled with motorists and returning home after a busy day. They usually live in large houses, or high-rise apartment blocks or even in small rented rooms equipped with modern facilities, like the Internet, telephones, televisions, and so on. Industrialization and modernization as well as global integration have big impacts on the lifestyle in cities. The most noticeable impact is the Western style of clothing. The“Ao Dai” – Vietnamese women’s traditional dresses are no longer worn in their daily life. Instead, jeans, T-shirts and fashionable clothes are widely preferred. We can infer from the passage that ___________ A: most of the urban dwellers have low incomes B: people leave the countryside because the life there is simple C: there is a big gap between the rich and the poor in cities D: people do morning exercise in public parks because they have much free time 16 Read the following passage about Chu Van An High School in Ha Noi, and mark the letter A, B, C or D on your answer sheet to indicate the correct word that best fits blank (26). Chu Van An High School is one of the oldest and most prestigious public schools in Viet Nam. Established (23) _______ 1908 by the French, the school is located by the West Lake, and was originally named (24) _______ the location it was in. It is a very pleasant, spacious school with a great view of the lake from the classroom windows. In 1943, the school was moved to Ninh Binh, and was moved back to Ha Noi in 1945. In that year, the school was renamed Chu Van An after a famous Vietnamese Confucianism teacher of the Tran Dynasty. Professor Nguyen Gia Tuong (25) _______ the first Vietnamese principal of the school. Many famous people like ex-Prime Minister Pham Van Dong, Doctor Ton That Tung and poet Xuan Dieu used to be the school’s students. Today, the school is still located in the same area and has maintained its prestige, as well as its reputation as one of the top high schools in Ha Noi. It is very difficult (26) _______ to the school. Every year, there are around three thousand (27) _______ but only about five hundred of them are admitted. Those applicants have to take an entrance examination conducted by the Department of Education and Training of Ha Noi. A: admitting B: be admitted C: to admit D: to be admitted

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. People in the South speak more direct than people in the North do. A: more direct B: people C: in D: do 2 Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. I wish I ___________ all the natural and man-made wonders of Viet Nam. A: visit B: could visit C: will visit D: am visiting 3 Mark letter A, B, C or D on your answer sheet to indicate the meaningful sentence from the cues given. we/ should/ think/ positive/ how/ protect/ environment/. A: We should think positively how to protecting our environment. B: We should think positive how protecting our environment. C: We should think positively how to protect our environment. D: We should think positive how to protect our environment. 4 Mark letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following conversations. Nga: “I can’t join the trip to Bat Trang with you all.” Trang: “_______” A: How do you go there? B: That’s awesome! C: How was that? D: What a pity! 5 Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. We need to take _________ to help preserve historical buildings. A: distance B: action C: activity D: condition 6 Read the following passage about Chu Van An High School in Ha Noi, and mark the letter A, B, C or D on your answer sheet to indicate the correct word that best fits blank (25). Chu Van An High School is one of the oldest and most prestigious public schools in Viet Nam. Established (23) _______ 1908 by the French, the school is located by the West Lake, and was originally named (24) _______ the location it was in. It is a very pleasant, spacious school with a great view of the lake from the classroom windows. In 1943, the school was moved to Ninh Binh, and was moved back to Ha Noi in 1945. In that year, the school was renamed Chu Van An after a famous Vietnamese Confucianism teacher of the Tran Dynasty. Professor Nguyen Gia Tuong (25) _______ the first Vietnamese principal of the school. Many famous people like ex-Prime Minister Pham Van Dong, Doctor Ton That Tung and poet Xuan Dieu used to be the school’s students. Today, the school is still located in the same area and has maintained its prestige, as well as its reputation as one of the top high schools in Ha Noi. It is very difficult (26) _______ to the school. Every year, there are around three thousand (27) _______ but only about five hundred of them are admitted. Those applicants have to take an entrance examination conducted by the Department of Education and Training of Ha Noi. A: got B: took C: became D: had 7 Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. The bus __________ before I reached the bus-stop. A: had left B: left C: was leaving D: leaves 8 Mark letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. A: relax B: behave C: paradise D: cavern 9 Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Please _________ the lights. It’s getting dark. A: go away B: go out C: turn off D: turn on 10 Mark letter A, B, C or D on your answer sheet to indicate the word CLOSET in meaning to the underlined words in each of the following questions. You shouldn’t walk at night alone in this area. It’s very dangerous. A: unsafe B: crowded C: entertaining D: convenient 11 Mark letter A, B, C or D on your answer sheet to indicate the word CLOSET in meaning to the underlined words in each of the following questions. I hope to come back to New Zealand one day in the future. A: go B: return C: visit D: see