số nghiệm nguyên của bpt (1/3)^căn x^2-3x-10 >(1/3)^x-2 là . giúp mk với

Câu 50: Trong không gian với hệ toạ độ Oxyz , cho đường thẳng d : $\frac{x+2}{1}$ = $\frac{y-1}{1}$ = $\frac{z-2}{2}$ . Viết phương trình đường thẳng d' là hình chiếu của d lên mặt phẳng Oxy . giúp mình với ạ

1. Vị trí địa lí Châu Mĩ có gì đặc biệt so với các Châu lục khác? .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2. Trình bày sự thay đổi các thành phần chủng tộc ở Châu Mĩ? ............................................................................ .. 3. Trình bày đặc điểm cấu trúc của địa hình Bắc Mĩ? ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 4. Trình bày sự phân hoá của khí hậu Bắc Mĩ? ........................................................................................................................................................................................................................................................................... 5. Nêu đặc điểm đô thị hoá ở Bắc Mĩ? ........................................................................................................................................................................................................................................................................... 6. Những điều kiện nào làm cho nền nông nghiệp Hoa Kì, Canađa phát triển đến trình độ cao? ........................................................................................................................................................................................................................................................... 7. Trình bày sự phân bố sản xuất nông nghiệp ở Bắc Mĩ? ......................................................................................................................................................................................................................................... 8. Công nghiệp mũi nhọn của Bắc Mĩ là các ngành công nghiệp nào? Phát triển ra sao? Phân bố? ................................................................................................................................................................................................................................... 9. Hiệp định mậu dịch tự do Bắc Mĩ có ý nghĩa gì đối với các nước Bắc Mĩ? ...................................................................................................................................................................................................................................................................................................................................................................................

Phân biệt được các loại hoa:hoa đực,hoa cái,hoa lưỡng tính,hoa đơn độc và hoa mọc thành chùm

31.I'd rather he ________________ harder. (1 Điểm) study to study studying studied 32.She is no longer interested in reading novels. (She used ______________________________.) (1 Điểm) to interested in reading novels to interesting in reading novels to be interested in reading novels to being interested in reading novels 33.They started their trip __________________ 6 o'clock _________________ the morning. (1 Điểm) in / on from / to on / in at / in 34.Internet is a very fast and convenient way of ________________ information. (1 Điểm) get to get got getting 35.She wishes she ________________ the next examination. (1 Điểm) passes passed will pass would pass 36.We have never met such a famous singer before. (This is ____________________________.) (1 Điểm) the last time we met such a famous singer. the first time we met such a famous singer. the last time we have met such a famous singer. the first time we have met such a famous singer. 37.I wish I ____________________ at school right now. (1 Điểm) am were would be will be 38.The man said that he ___________________ the only plumber in the neighborhood. (1 Điểm) is should be was were 39.The boy has played computer games for three hours. (It is _____________________________.) (1 Điểm) three hours since the boy started to play computer games three hours since the boy has played computer games been three hours since the boy started to play computer games been three hours since the boy has played computer games 40.They _________ their parents since they got married and moved out. (1 Điểm) has saw hasn't seen have saw haven't seen 41.He ____________ that he saw a UFO and an alien. (1 Điểm) claimed asked told wondered 42.She _________________ me whether I could play any other sports. (1 Điểm) asked told said to adviced 43.The students are very intelligent. They can answer all the questions. (1 Điểm) They are so intelligent students that they can answer all the questions. They are such intelligent students that they can answer all the questions. The students aren't intelligent enough to answer all the questions. Although the students are very intelligent, they can't answer all the questions.

Ex1: Find the word which has different sound in the part underlined: 1. A. deposit B. compost C. crop D. florist 2. A. fabric B. canoe C. glassware D. magnificent Ex2: Find the word which has different stress pattern from the others: 3. A. emergency B. stretcher C. metal D. limestone 4. A. promise B. treatment C. import D. sunbathe 5. A. recognize B. institute C. fertilizer D. decompose Ex3: Choose the best answer for each question: 1. What can I get …………. you? – Thanks, I have to lift this table to the corner. A. on B. for C. at D. in 2. What is your address? – I live …….. Tran Quoc Toan street ……... Hoang Quoc Viet street. A. between/ and B. both/ and C. in/ at D. among/ and 3. Let’s ……… the patient’s feet or ………. His/her head below the level of heart. A. lower/ elevate B. push/ lower C. elevate/ lower D. pick/ get 4. We have to cure this cancer as soon as possible in order to ……….. its bad impacts on our health. A. maximize B. cut C. increase D. minimize 5. Thank you very much ………. your cooperation in this project. A. for B. because C. due to D. as 6. Which group do your clothes belong …………? – Fabric. A. on B. at C. to D. as 7. We can make vegetable matter ………… compost and fertilizer our field. A. to B. into C. in D. at 8. We should recycle all car tires, ……..…, glass and ………. to keep our environment clean. A. trees/ wood B. waste/ water C. newspaper/ compost D. bottles/ drink cans 9. The glass is broken into small pieces before being ……….. and …………. . A. washed/ melt B. to wash/ to melt C. washing/ melting D. used/ to melt 10. It is very dangerous for children …………... with matches. A. playing B. to play C. played D. be played Ex4: Put the verbs in brackets into the correct form: 1. If we (recycle) ……………… more, we will help the Earth. 2. If I (be) ……………….. you, I (do) ………………. that. 3. If people travel to work by bus, there (be) ………………… fewer car fumes. 4. We (save) ………………. thousands of trees if we don’t waste paper. 5. If we use water carefully, more people (have) ………………….. fresh water. Ex5: Rewrite these sentences: 1. The boy is talking to the teacher. He is our monitor. -> The boy ……………………………………………………………………………….…. 2. Smoking is very bad for your health. You shouldn’t do it anymore. -> I would rather ……………………………………………………………………………. 3. ‘’I am so thirsty. Can you give me a cup of cold water?’’ -> Would you mind …………………………………………………………………………. 4. People believe Linh’s brother to be the thief, but he isn’t and he hates it. -> Linh’s brother hates ……………………………………………………………………… 5. I would rather play sports than watch TV in the afternoon. -> I prefer ……………………………………………………………………………………. Hứa vote 5* đầy đủ

Mọi người ơi ai giỏi Toán làm giúp mình với ạ

40. What time …..............she (finish) ……………work every day? 41. He (not usually drive) ………………………to work. He usually(walk) ………………… 43. Mozart (play) ……………………the piano when he (be) ……………three. 44. Many people prefer (fly) …………………to (go) ………………..by sea. 45. My mother (go) ………..to the supermarket yesterday evening but she (not buy) ………. 46 He (move) …………………to Paris in 1917 and (spend) ………….….6 years in Paris. 47. Teenagers like (listen) ……………..……to the latest pop music. 48. What ……………….you (do) …………..tomorrow morning. 49. Children shouldn`t (drink) ……………….coffee. It (not be) ……… good for their health

Cho 12g hỗn hợp Al và Mg vào dd H2SO4 25,5% ( lấy dư) thu được 14,56 H2( đktc ) và dd X A. Tính thành phần % theo khối lượng hỗn hợp ban đầu B. Lượng axit dư được trung hoà vừa đủ bởi 200ml dd KOH 1M. Tính khối lượng dung dịch H2SO4 ban đầu.

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