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Chủ đề:

Unit 4 : SCHOOL EDUCATION SYSTEM

Câu hỏi:

I. Passive voice: (dang 1) 1. The mass reported that the countries had reached a decision to stop the fight. 2. They claimed that Columbus was not the first one who discovered the New World. 3. Parents think that teenagers are paying too much attention to their appearance. 4. The Anti-Doping Committee has reported that the famous athlete had used prohibited chemicals. 5. The government acknowledged that the stadium was designed badly. 12. People assumed that the authority hadn't tried to do anything to resolve the current political crisis. 6. Scientists proved that the rivers in this area had been polluted by the nearby factories. 7. People considered that President Lincoln was the best US president of all time. 8. They have reported that all the computers in Danish High School had been stolen. 9. They knew that Egyptians had been mummifying a lot of bodies at that time. 10. The Worker Union presumes the workers in that company are exploited seriously. 11. Developers believe that developing countries are setting Western nations as good examples of development. 13. Reporters say that food and medicines are delivered to the victims of the earthquake. 14. We knew that pure essential oil had been used by ancient people as a treatment to many diseases. 15. They claimed that thousands of fans had been waiting for Westlife's autographs. 16. They announce that the film has been prepared for its release this summer. 17. We believe that Bruce and his wife have been arguing for the whole night.18. We know that pollution is affecting many forests in the world. 19. They think that there is a lot of oil in that area of continental shelf. II. (dang 2) 1) The manager had his secretary type the report for him. 2) The roof of our classroom is leaking; we must get John to get it. 3) 4) If the maid comes today, please have her wash my shirts. I'm going to have my sister dry-cleaned. 5) They have just had their worker clean. 6) My tooth is painful. I must go to see the dentist and get it pulled out. Do you think that we can get Kate take us to the airport tomorrow? 7) 8) My sister often get them to make new dresses for me. 9) Mr. Pike has just got his son buy him a newspaper. 10) Did the manager have the accountant check some figures again? 11) She had her daughter prepared the meal for the family. 12) The professor had the class write a 5,000-word research paper on water pollution. 13) He asked his mother to lengthen the trousers.. →He had the trousers 14) She'll ask someone to fix the lamps in her room. -She'll have the lamps 15) We ordered somebody to whitewash the ceiling. → We had the ceiling 16) I'm going to tell someone to add an extra room. I'm going to have an extra room_ 17) The tree was so diseased. We asked someone to cut it down. →The tree was so discased. We had it 18) Our season tickets need renewing. - We have our tickets. 19) Your hair wants cutting. I have my hair 20) We must find an expect to check all these machines. → Did you have all these machines 21) Did you tell someone to translate the report into French? → Did you have the report. 22) Tell someone to type this letter. Have this letter 23) David went to the hospital. A nurse bandaged his arm. →He had his arm 24) Daniel is going to the dentist. He is going to fill this tooth. → He is going to have the dentis

Chủ đề:

Luyện tập tổng hợp

Câu hỏi:

VII. Join each pair of sentences, using a relative pronoun OR a relative adverb. Use com if necessary: 1. I would like to see the trees. My father planted them last month. 2. We enjoyed Mexico City. We spent our vacation there. 3. These children are very mischievous. They often want to cause trouble to other people. 4. My uncle says my mother will visit me. I have great confidence in him. 5. They kept talking about the time. They worked together in the factory then. 6. Tennis is the best summer game. It can be played by two or four players. 7. His stepmother is not kind to him. He is living with her. 8. Tom made a number of suggestions. Most of them are useful. 9. I study with a student. You saw his father yesterday. 10. She gave us a lot of information. Most of it was useless. 11. The girl left him after a few weeks. He fell in love with her. 12. I'd like to see the trees. My father picked these apples from them. 13. The man was away on holiday. The manager wanted to see him. 14. The birds have flown away. I found their nest on the tree behind my house. 15. He isn't looking forward to the time. He will have to leave at that time. 16. The pen is now carefully preserved. He wrote so many great novels with this pen. 17. The boy and the dog have just been found by the police. They were lost in a forest during a hunt. 18. There were some vegetables left over. I was able to use a few of them in some soup 19. Mr. Smith said he was too busy to speak to me. I had come specially to see him. for supper. 1. Smith, whom I had come taxe said he was too busy to speak to me. 20. They picked up five boat-loads of refugees. Some of them had been at sea for several months.

Chủ đề:

Chương 5. Nhóm Halogen

Câu hỏi:

1. Cho 18,4 gam hỗn hợp Al và Zn tác dụng với dd HCl dư thấy có 1 gam khí hidro thoát ra. Xác định thành phần % khối lượng mỗi kim loại trong hỗn hợp đầu. 2. Cho hỗn hợp gồm Fe và FeO vào dd HCl¬¬ dư, sau phản ứng thấy có 2,24 lít khí (đktc) thoát ra, cô cạn dung dịch sau phản ứng thu được 38,1 gam muối khan. Tính khối lượng mỗi chất trong hỗn hợp ban đầu. 3. Hòa tan hoàn toàn 20 gam hỗn hợp Zn và Cu bằng lượng vừa đủ dd HCl 2M thu được 4,48 lít khí (đktc). a. Tính thành phần % khối lượng mỗi kim loại trong hỗn hợp ban đầu. b. Tính thể tích dd HCl đã dùng. 4. Cho 22 gam hỗn hợp Fe và Al tác dụng vừa đủ với dung dịch HCl 7,3%. Sau phản ứng thu được 17,92 lít khí (đktc). a. Tính thành phần % khối lượng mỗi kim loại trong hỗn hợp ban đầu. b. Tính khối lượng dung dịch HCl đã dùng. 5*. Cho m gam hỗn hợp 2 kim loại kiềm (ở 2 chu kỳ liên tiếp nhau) tác dụng vừa đủ với dung dịch HCl thu được 0,448 lít khí (đktc). Dung dịch thu được sau phản ứng đem cô cạn được 2,58 gam muối khan. a. Xác định tên 2 kim loại. b. Tính thành phần % khối lượng mỗi kim loại trong hỗn hợp ban đầu. 6*. Chia 35 gam hỗn hợp X chứa Fe, Cu, Al thành 2 phần bằng nhau. - Phần 1: cho tác dụng hoàn toàn với dung dịch HCl dư thu được 6,72 lít khí (đktc). - Phần 2: tác dụng vừa đủ với 10,64 lít khí clo (đktc). Tính thành phần % khối lượng mỗi kim loại trong hỗn hợp ban đầu.

Chủ đề:

Chương 5. Nhóm Halogen

Câu hỏi:

1. Cho 18,4 gam hỗn hợp Al và Zn tác dụng với dd HCl dư thấy có 1 gam khí hidro thoát ra. Xác định thành phần % khối lượng mỗi kim loại trong hỗn hợp đầu. 2. Cho hỗn hợp gồm Fe và FeO vào dd HCl¬¬ dư, sau phản ứng thấy có 2,24 lít khí (đktc) thoát ra, cô cạn dung dịch sau phản ứng thu được 38,1 gam muối khan. Tính khối lượng mỗi chất trong hỗn hợp ban đầu. 3. Hòa tan hoàn toàn 20 gam hỗn hợp Zn và Cu bằng lượng vừa đủ dd HCl 2M thu được 4,48 lít khí (đktc). a. Tính thành phần % khối lượng mỗi kim loại trong hỗn hợp ban đầu. b. Tính thể tích dd HCl đã dùng. 4. Cho 22 gam hỗn hợp Fe và Al tác dụng vừa đủ với dung dịch HCl 7,3%. Sau phản ứng thu được 17,92 lít khí (đktc). a. Tính thành phần % khối lượng mỗi kim loại trong hỗn hợp ban đầu. b. Tính khối lượng dung dịch HCl đã dùng. 5*. Cho m gam hỗn hợp 2 kim loại kiềm (ở 2 chu kỳ liên tiếp nhau) tác dụng vừa đủ với dung dịch HCl thu được 0,448 lít khí (đktc). Dung dịch thu được sau phản ứng đem cô cạn được 2,58 gam muối khan. a. Xác định tên 2 kim loại. b. Tính thành phần % khối lượng mỗi kim loại trong hỗn hợp ban đầu. 6*. Chia 35 gam hỗn hợp X chứa Fe, Cu, Al thành 2 phần bằng nhau. - Phần 1: cho tác dụng hoàn toàn với dung dịch HCl dư thu được 6,72 lít khí (đktc). - Phần 2: tác dụng vừa đủ với 10,64 lít khí clo (đktc). Tính thành phần % khối lượng mỗi kim loại trong hỗn hợp ban đầu.