... vào một cái bể không có nước trong 4 giờ 48 phút sẽđầy bể. Nếu mở vòi 1 trong 3 giờ và vòi 2 trong 4 giờ thì được 34 bể nước. Hỏi mỗivòi chảy một mình thì trong bao lâu mới đầy bể ? Bài ... xegặp nhau tại một ga cách Hà Nội 300 km. Tìm vận tốc của mỗi xe, giả thi t rằngquãng đường sắt Huế - Hà Nội dài 645 km.Bài 10: Một lớp học có 40 học sinh được sắp xếp ngồi đều nhau trên các ghế ... từ thành phố A để đi đến thành phố B. Haithành phố cách nhau 312km. Xe thứ nhất mỗi giờ chạy nhanh hơn xe thứ hai 4kmnên đến sớm hơn xe thứ hai 30 phút. Tính vận tốc của mỗi xe.Bài 8: Một người...
... second paragraph refers to __________ .3Lesson plan of 10 grade – Extensive lesson – Ha Thi Phuong Lan – Co Loa High school S + HAD + V3/ED S + WOULD/COULD + HAVE + V3/EDUNIT 11: NATIONAL ... abondaned animals4Lesson plan of 10 grade – Extensive lesson – Ha Thi Phuong Lan – Co Loa High schoolUNIT 11: NATIONAL PARKSI. VOCABULARYA. READING (pages 112-114)abandoned (adj) bị ruồng bỏ ... the both sides of the river.Niagara Falls has long been a popular honeymoon destination for newly weds. 43) Which of the following is completely on the US side of the border with Canada? A....
... Information (2)………more quickly than a person. Second, computers can work with (3)……………information at the sametime. Third, they can (4)………information for a long time. They don’t forget things ... months before B.for many months C.since a long time. D.for many months ago77.The teacher got angry because Jack went out of the class without getting her…………… A.persuasion B.situation C.condition ... B.injuring C.injures D.injured53.Be patient with……………………work. A.time –consumption B.time-consuming C.time –consumed D.time –consumable54.The……………are those who are unable to use part of the body...
... 495215) Tìm số hạng không chứa ẩn x trong khai triển : (x2+x31) 10 . Kết quả: 210. 216) Tìm hệ số của x 101 y99 trong khai triển (2x−3y)200 . Kết quả:9 9101 992003.2.C217) Chứng minh ... có 3 đỉnh lấy trong P nếu không có 3 điểm nào lấy trong P thẳng hàng? Kết quả: 3 10 C 120=b) Cũng câu hỏi như câu a) nếu trong P có đúng 4 điểm thẳng hàng. Kết quả: 3 3 10 4C C 116− =190) ... I(1;−a−b 10) ∈Ox ⇒ −a−b 10 = 0 ⇒ a+b = 10. • Điều kiện đủ : a+b = 10 ⇒ f(x) = (x−1).g(x) = 0 với g(x) = x2−2x+b−1. YCBT ⇔≠−=>−=∆02b)1(g0b2g⇔ b<2 Kết luận : <−=+2b10ba80)...
... century, it two or three months to cross North America by covered wagon.a. took b. had taken c. had taken d.was taking32. In the past the trip very rough and often dangeruos, but things a great deal ... When Carol last night, I my favorite show on television.a. was calling/watched b. called/have watchedc. called/was watching d. had called/watched35.By this time next summer, you your studies.a.completes ... night at this time, they the same thing. She and he the newspaper.a. are doing/is cooking/is reading b. were doing/was cooking/was readingc. was doing/has cooked/is reading d. had done/was cooking/read38....
... 7 o’clock.a. Did b. has done c. had done d. would do6.I about him when suddenly he came in.a. talk b. talked c. am talking d. was talking7.Please don’t touch anything before .a. the police ... had written 12.By next month, I my first novel.a. will finish b. am going to finish b. finish d. will have finished13.I the money from him yet.a. haven’t received b. don’t receive c. will receive ... questions every day?a. Have you ever b. Had you ever c. Do you ever d. Are you ever 24. She working on that manuscript for 2 year now.a. will be b. has been c. had been d.is25. I there once...
... c. at d. on 21.She comes from …………beacause she is wearing a kimono.a. Viet Nam b. USA c. Japan d. India 22.This exercise must ………… carefully.a. am done b. is done c. are done d. be done Trang ... women.a. casual b. traditional c. beautiful d. uniform8. He …………the ao dai in poems, novels and song.a. have mentioned b. has mentioned c. have mention d. has mentions9. The meeting started…………2pm.a. ... ago.=> Mary ……………………………………………………………………… 6. People use this dictionary very often.=> This dictionary……………………………………………………………………… Trang 4Danh §« Líp 9A Trêng Trung Häc Cë Së VÜnh B×nh B¾c23.He...
... was_______________by chemicalsA.contaminate B.contamination C.contaminated D.contaminant37.She is interested in the_______________of environmentA.conservation B.conserve C.conservative D.conservable38.Every ... D.eliminate2.Water pollution is more and more serious due to the tests of nuclear weapons in the seas and oceansA.circulation B.environment C.elimination D.contamination3.Man and animals need a constant supply ... D.distant8.Contamination is threatening the park and many species of animals living in itA.population B.pollution C.elimination D.distribution9.There are toxic levels of chemicals in the waterA.poisonous...