tổng số hạt là 60, trong đó, số hạt mạng điện dương bằng số hạt không mang điện. Tìm số notron?
I. From each number, pick out the word whose underlined part is pronounced differently from the others. 1. A. out B. round C. about D. would 2. A. chair B. check C. machine D. child 3. A. too B. soon C. good D. food 4. A. though B. enough C. cough D. rough 5. A. happy B. hour C. high D. hotel II. From each number, pick out one word which has the stress on the first syllable. 1. A. region B. comprise C. Malaysia D. compulsory 2. A. association B. Buddhism C. divide D. together 3. A. enjoy B. religion C. Hinduism D. population 4. A. Chinese B. although C. instruction D. currency 5. A. primary B. religion C. tropical D. friendliness III. Choose the word or the phrase or sentence that best completes each unfinished sentence below or that best keeps the meaning of the original sentence if it is substituted for the underlined word or phrase. 1. _________Kuala Lumpur, Ha Noi is a busy modern city A. As B. Such as C. Like D. Similar 2. The _________destroyed the Central Bank A. famine B. strike C. capitalism D. earthquake 3. I reserved a table for two, at eight o’clock. A. set B. bought C. booked D. put 4. Football, chess, and tennis are _________. A. matches B. games C. plays D. athletics 5. The manager _________ the man to return to work immediately. A. insisted B. suggested C. demanded D. ordered 6. I wish I ___________his name. A. knew B. know C. will know D. would know 7. If you have a map along, You ________ get lost. A. will B. will not C. wouldn’t D. would 8. I told her she could stay with us. That’s what I ___________. A. said to her B. said her C. told to her D. told 9. He told me he couldn’t go to sleep. That’s what he ________. A. said me B. talked to me C. told to me D. said to me 10. The English student acts as if he _________Vietnamese perfectly. A. knows B. knew C. had know D. will know 11. Over the next few days, the girls _______Ho Chi Minh’s Mausoleum. A. will visit B. visited C. are visiting D. visits 12. When did you _______see him? A. recently B. already C. last D. lately 13. The car went ________full speed. A. with B. for C. to D. at 14. Linguistics is the science of _________. A. medicine B. economics C. languages D. mathematics 15. Let’s have dinner, ________? A. will he B. shall we C. won’t we D. shan’t we 16. I came ________ an old friend on the street yesterday morning. A. over B. across C. down D. in 17. Will you see ______ Mr. Nam at Tan Son Nhat airport tomorrow morning? A. over B. down C. off D. in 18. Minh’s father often take him ______ the park every summer. A. on B. to C. in D. after 19. He _______his father in many ways. A. takes over B. takes down C. takes on D. takes after 20. I’ll pick you ________at your hotel next Monday. A. on B. off C. at D. up 21. Your hat doesn’t go ________your clothes. A. up B. with C. of D. down 22. The plane will ________ at 06.30 so you must be there at 06.00. A. take after B. take down C. take off D. take up 23. The thieves waited until it was dark enough to ___________his house yesterday. A. broke into B. broke out of C. broke away D. broke through 24. The bomb missed it mission then __________. A. went down B. went off C. went through D. went away 25. The earth is a(n) ___________. A. satellite B. state C. planet D. star 26. I borrowed this coat _________my father. A. from B. to C. at D. by 27. If you need an extra bed for your guest, you can use one of __________. A. our B. us C. ours D. we 28. We went by car but the children went _________foot. A. on B. by C. to D. with 29. Buddhism is an __________. A. group B. religion C. association D. imagination 30. Lan ________the peaceful atmosphere while Maryam was praying. A. enjoying B. has enjoyed C. enjoyed D. enjoy 31. I wish I ______ you some money for your rent, but I am broke myself A. can lend B. would lend C. could lend D. will lend 32. There are several books by Hemingway on this __________. A. shelf B. platform C. cupboard D. support 33. I was so tired that I ________asleep in the chair. A. got B. felt C. went D. fell 34. The players ________to be there at 3 o’clock. A. told B. were told C. have told D. tell 35. Do you ______me say this in class? A. let B. allow C. permit D. mind 36. He forced all his children ________hard till midnight. A. to study B. studied C. study D. studying 37. I am always _________for school. A. on time B. in time C. at time D. out of time 38. I was having a rest when the volcano_________. A. exhibited B. exhausted C. exhaled D. erupted 39. We _________ an English exercise. A. are doing B. did C. have done D. all are correct 40. He usually worn a pair of glasses. A. He no longer wears a pair of glasses. B. He used to wear a pair of glasses. C. He doesn’t wear a pair of glasses anymore D. All are correct 41. They wanted to know if the woman had died of the rare _________. A. illness B. pain C. ache D hurt. 42. “ I wish I _________stay longer,” Maryam said to Lan at the end of the week A. could B. can C. will D. may
1.Nhận xét nào sau đây không đúng về nơi phân bố của các dân tộc ít người ở nước ta? * Vùng thượng nguồn của các dòng sông Chủ yếu ở các vùng đồng bằng và duyễn hải. Nơi có vị trí quan trọng về an ninh, quốc phòng Nơi có tiềm năng lớn về tài nguyên thiên nhiên. 4.Dựa vào Atlat trang 16, hãy cho biết người Thái, Mường phân bố chủ yếu ở khu vực nào sau đây của nước ta? * 1 điểm Tả ngạn sông Hồng . Hữu ngạn sông Hồng đến sông Cả. Ở các sườn núi cao từ 700-1000m. Trên các vùng núi cao 5.Số lượng các dân tộc cư trú ở vùng Trường Sơn - Tây Nguyên là * 1 điểm 5 dân tộc trên 20 dân tộc . 10 dân tộc. 15 dân tộc. 6.Dân tộc Chăm, Khơ-me cư trú thành từng dải hoặc xen kẽ với người Việt tại các tỉnh thuộc * 1 điểm Trung du và miền núi Bắc Bộ. khu vực Trường Sơn - Tây Nguyên. cực Nam Trung Bộ và Nam Bộ. Bắc Trung Bộ. 7.https://lh5.googleusercontent.com/Fg_MZ4Xq5E6qV76V1ZHu23aopr6ZNornxSclYNw05U-HrAJW0F6OTjfo8fJbTllaxTETFGiPa-uRq2K1OrlNSabbZyHM6jbB2rwFHHia6HeCuovT2dO7_Crp1sKcjPJeMA=w708
Trình bày hộ 2 bài dưới chi tiết nhé
Khối lượng nguyên tử của Clo là 35,5. Clo có 2 đồng vị là 35Cl và 37Cl. Phần trăm khối lượng của đồng vị 35Cl có trong HClOn là 26,119% (hiđro là 1/1và oxi là 16/8). Giá trị của n là:
Chọn đáp án + giải thích giúp mk vs.
.......................................................... nhanh ạ
Hãy viết về các hoạt động hằng ngày của embằng tiếng Anh, sử dụngcác cụm từ gợi ý dưới đây - In the morning, + get up at... + take a bath - brush my teath + leave the house at + look at my ises/ do my exercises/learn my lesson + have online lessons have / epsilon eat breakfast/ have lunch - In the afternoon, + lead the buffalo to the field
Mọi người giúp mình với xong em cho 5 sao ạ
Cho các SND x,y > 1 sao cho $9x^{2}y^2$ + 7x -7y là SCP
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