Cho lăng trụ ABC.A'B'C' có các mặt bên đều là hình vuông cạnh a. Khoảng cách giữa hai đường thẳng A′B và B'C là? Tương tự đoạn vuông góc chung của A'B' và BC' trong lăng trụ ABC.A'B'C' có đáy là tam giác đều. AA' vuông góc với (ABC) là ?

1. Don’t _______ him on to join a gang: nothing could be worse for him! A. egg B. toast C. butter D. knife 2. Many companies seem to reach the _______ of disaster before anybody has tried to get something done. A. side B. precipice C. edge D. brink 3. I am not surprised that your brother is angry; you spent half an hour _______ him up about an issue he cares about deeply. A. spinning B. turning C. winding D. twirling 4. Although Gail thought she should have won first place, she _______ her pride and congratulated her rival. A. exerted B. swallowed C. bore D. aroused 5. I had spent two months worrying about it and I was glad to get it off my _______. A. shoulders B. head C. chest D. mouth 6. That he was using unscrupulous research methods only came out because his assistant _______ on him to the press. A. ratted B. hounded C. fished D. bugged 7. The phrase ‘money doesn't buy happiness’ is a cautionary cliché that keeps us from blindly lining your pockets with _______ in the hope that we’ll feel happier. A. stash B. hoard C. stock D. dosh 8. If there happened to be both rich and poor people, as there happen to be both black and white ones, then the advantages of the _______ might well spread in time to the hard-up. A. well-heeled B. big-hearted C. open-handed D. tight-fisted 9. The government has agreed to _______ an additional £5 million to schools in underprivileged regions. A. dole out B. tip off C. crack down D. toss off 10. As much as the candidate tried to convince people of his honesty, he could not shake off his _______ past. A. serene B. tranquil C. shady D. frigid Thế này thôi ạ. Em cám ơn trước :3

Rút gọn các biểu thức Bài 3 ( thi GK2 năm 05 - 06) c) Tìm các giá trị nguyên của x sao cho giá trị tương ứng của M nguyên dương

nêu ý nghĩa khổ thứ 3 trong bài nhớ rừng ( ngắn gọn )

Hãy đọc kĩ đoạn văn sau : “…Tinh thần yêu nước cũng như các thứ của quý. Có khi được trưng bày trong tủ kính, trong bình pha lê, rõ ràng dễ thấy. Nhưng cũng có khi cất giấu kín đáo trong rương, trong hòm. Bổn phận của chúng ta là làm cho những của quý kín đáo ấy đều được đưa ra trưng bày. Nghĩa là phải ra sức giải thích, tuyên truyền, tổ chức, lãnh đạo, làm cho tinh thần yêu nước của tất cả mọi người đều được thực hành vào công việc yêu nước, công việc kháng chiến”.(Ngữ văn 7 – tập 2, trang 25) 1. Phương thức biểu đạt chính được sử dụng trong đoạn văn trên là gì? 2. Câu văn: “Nghĩa là phải ra sức giải thích, tuyên truyền, tổ chức, lãnh đạo, làm cho tinh thần yêu nước của tất cả mọi người đều được thực hành vào công việc yêu nước, công việc kháng chiến” thuộc kiểu câu gì? Vì sao?

1278 : 3 đặt tính rồi chục lại nha

1. The candidate’s optimism gave _______ to doubt as the result of exit polls became known. A. place B. lie C. vent D. voice 2. After the hurricane, all that was left of our house was a pile of _______. A. rabble B. rubble C. ramble D. rumble 3. To say it is the best novel written in the last twenty years is going far _______. A. a long way B. over the top C. through a bad patch D. to great lengths 4. This week’s programme is given _______ a profile of an eminent scientist. A. credit for B. in to C. over to D. up on 5. Inspector Morts was determined to get to the _______ of the mystery. A. ground B. end C. bottom D. point 6. Getting away from the stresses of work would do you a _______ of good. A. sense B. taste C. virtue D. power 7. If you make it to the final, you will be _______ some of the best sprinters in the world. A. in for B. up to C. up against D. up with 8. He gave speeches all over the world to _______ support for his “Help the Homeless” Campaign. A. trot out B. turn to C. weigh up D. whip up 9. Somehow I managed to _______ my physics exam. The pass mark was 55 and I got 56. A. scrape through B. shake off C. sit through D. slip off 10. The new professor is way ahead of the _______with his research into genetics. A. twist B. circle C. spin D. curve Mọi người giải thích cho em nữa ạ

vẽ anime vui Yêu cầu: bằng app, có màu

1. Discussions on the issue of expansion of the company have been in _______ since the outbreak of the disease in the area. A. hitch B. limbo C. feud D. core 2. Viewers were _______ at the incredible sight of the lunar landscape, unable to take their eyes off the screen until the very end of the broadcast. A. switched B. devised C. transfixed D. stifled 3. Having lost her mother at an early age, Mary felt she had become a mere _______, having to do absolutely everything for her five brothers and sisters. A. taskmaster B. workmate C. slavedriver D. workhorse 4. Keith’s _______ income looks impressive, but once tax and social security contributions are deducted, it’s not so much. A. full B. grand C. net D. gross 5. We have developed rapid order processing to _______ deliveries to customers. A. expedite B. fasten C. heighten D. quicken 6. The operation was a success, but the patient died of _______. A. complications B. symptoms C. after-effects D. ramifications 7. Increasing terrorism in the region puts a new _______ on the situation. A. complexion B. disposition C. outlet D. tantrum 8. If you need help, please don’t hesitate to call me. I can be there _______. A. in a fix B. in a flash C. in a daze D. in the bag 9. He felt his heart _______ as his bride-to-be began her walk down the aisle. A. fasten B. quicken C. expedite D. heighten 10. My car broke down and I had to _______ a huge sum of money to have it towed and serviced. A. splash out B. fork out C. put aside D. pay off Mọi người ggiair thích cho em nữa ạ

giúp mình với chỉ cần lm câu 2,4,5 thôi nhé