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phamthithungan1202
2 năm trước
Đốt cháy hoàn toàn hợp chất hữu cơ X chỉ thu được CO2 và hơi nước. Phân tử khối của X bằng 46.X có thể là những chát nào?Trình bày phương pháp hóa học phân biệt các chất đó.
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UNIT 9 & UNIT 10 TIẾNG ANH LỚP 10 Pronunciation : 1. A. description B. tradition C. question D. expression 2. A. depth B. refer C. beneath D. secret 3. A. destroyed B. depressed C. filled D. answered Main stress 4. A. destruction B. industry C. addition D. electric 5. A. against B. conserve C. frequent D. remove Mark your answer to show the underlined part that needs correcting 6. Because of his mother has been seriously ill, she can’t come to the party. A. Because of B. has been C. seriously ill D. can’t come 7. I'll pay you double if you get the work finishing by Friday. A. I'll pay B. double C. if D. finishing 8. It often takes the boy about ten minutes to go to school from here by foot A. takes B. ten minutes C. to school D. by foot Choose the one or phrase that best completes each sentence. 9/ What do I think of your purple shoes? Well, they're certainly _______. A. differ B. difference C. different D. differently 10/ This has been a _______ time for us all. A. challenge B. challenger C. challenged D. challenging 11/ Scientists now send submarines to the seabed. A. investigate B. investigative C. investigation D. investigating 12/ I need someone _______ to look after the children while I'm at work. A. depend B. dependence C. dependable D. dependant 13/ These sperm whales to the warm waters to give birth . A. settle B. goes C. relocate D. migrate 14/ They knew there must be trouble unless the report was by the next day. A. finish B. finishes C. finishing D. finished 15/ You _______ show this letter to anyone else. A. mustn't B. didn’t have to C. couldn’t D. didn’t need 16/ I wouldn't work for them even if they _______ me twice my current salary. A. paid B. had paid C. have paid D. pay 17/ If anyone _______ for me, please tell them I'll be back in the office at 4 o'clock. A. rang B. had rung C. rings D. has rung 18/ Many people are very concerned about the _______ of the rainforests. A. lost B. loss C. lose D. losing 19/ When preparing meals, you need to think about _______ and taste as well as nutritional value. A. variety B. various C. varied D. variable 20/ Some marine animals are dangerous to humans. A. living in the mountain B. living in the ocean C. living in the forest D. living in the house 21/ Sperm whales and sharks are carnivores. A. animals that live in the sea B. animals that only eat plants C. fish that aren't born from eggs D. animals that eat meat 22/ Zoos nowadays are very about their image. A. sense B. sensitive C. sensible D. senseless 23/ A novelist is a person who has a very mind. A. image B. imagine C. imaginative D. imagination 24/ Most of the old part of the city was _______ by bombs during the war. A. planted B. destroyed C. eliminated D. worried 25/ We would never know the true of the loss of forest. A. interest B. value C. conserve D. cost 26/ The floor was covered in tiny pieces of paper. A. unimportant B. many C. very large D. extremely small 27/ He put an arm around her shoulder _______. A. protected B. protection C. protective D. protectively 28/ Her _______ of English grammar is very extensive. A. know B. knowable C. knowledge D. knowing 29/ If modern technology did not exist, we would never have such precious information. A. valuable B. precise C. confidential D. detailed 30/ The new job will provide you with _______ experience. A. value B. valued C. valuable D. invaluable

Question 13: Would you mind ______________ for a moment? ​A. waiting​​B. to wait​C. wait​D. to be waited Question 14: Mr. Pike usually ____________ several cups of tea in the morning. ​A. drink ​B. drinks ​C. drank​D. has drunk Question 15: As a brilliant and mature student, Marie Curie ___________ the dream of a scientific career. ​A. interrupted​B. awarded ​C. harboured​D. studied Question 16: _____________ is my favorite subject at school. ​A. Chemistry​B. Chemical​C. Chemist​D. Chemically​​ Question 17: This supermarket is always crowded ___________ shoppers. ​ A. for ​B. with ​ C. in ​D. about Question 18: The farmers pump water into the field and ________ the transplanting. ​A. get​B. take ​C. make​D. do Question 19: It takes twice as long to drive to work during rush hour because there are so much _______. ​A. homework ​B. subjects​C. time​D. traffic Question 20: I think teaching is an interesting occupation because I love working with children. ​A. job ​B. interest​C. subject​D. prize Question 21: I can do it myself, so don’t worry ________ me. ​A. for ​B. about ​ C. in​D. with​​ Question 22: The farmers usually ___________ a short rest before going back to work. ​A. take​B. get ​C. do ​D. make ​ Question 23: Soon all the other children were happy and contented with their situations ​A. disappointed​B. satisfied​C. exhausted ​D. excited Question 24: Mrs. White often __________ vegetable and fruit at this store. ​A. has bought ​B. buy​C. buys ​D. bought​ Question 25: I try to learn English well because it is an international ______________ . ​A. subject​B. interest​C. occupation ​D. language Question 26: Marie Curie received general ______________ in local schools. ​A. education ​B. educate​C. educated​D. educational​​ Question 27: Marie Curie was awarded a Nobel Prize in Chemistry for _________ the atomic weight of radium. ​A. founding​B. creating​C. determining ​D. interrupting ​ Question 28: The children ______________ football in this garden every afternoon. ​A. have played​B. plays ​C. play​D. played Question 29: David is very good at Physics, so he wants to become a ___________ . ​ A. science​B. scientific​C. scientifically ​D. scientist​​ Question 30: Yuri Gagarin died in a/ an _____________ plane accident in 1968. ​A. tragic​B. narrow ​C. interesting ​D. mature

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