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Mong bn nhận nha
Cho tam giác ABC cân tại A. lấy điểm D thuộc canh ac, điểm E thuộc cạnh AB sao cho AD=AE. So sánh a) ABD;ACE b) Gọi I là giao điểm của BD và CE. Tam giác IBC là tam giác gì? Vì sao?
Cho mình hỏi mạch nhánh vs mạch vòng khác nhau chỗ nào vậy?
giup mik giai vs sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
điểm đối xứng của điểm A=(2,1,3) qua mặt phẳng oxz là điểm nào? giúp mình với
Read the following passageand mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. When you hear how I learned a foreign language, you have to remember a few things. In 1993, when I started learning English, no one had heard of the Internet. I wasn’t able to read websites on topics that I found interesting or follow blogs. And I have no idea how I decided which movies to see without my favourite movie review website. My reading practice was limited. All I had were a few books on sale locally. For listening practice, I only had the news and cartoons on cable TV. People bought and rented videos but in Poland there was no spoken English on them. The only way to hear that was to visit the movies. My dictionaries were all in book form until I received my first PC dictionary. It came on at least six disks and had unhelpful explanations and few example sentences. It doesn’t sound very useful but I loved it because of its ability to work with other programs and find English words more quickly. Today, computerized dictionaries have simple explanations and lots of examples. Now I can spend hours on the web, reading about my favourite topics, downloading up-to-date movies, emailing English-speaking friends and posting comments on forums. The word “up-to-date” means ____________________. A: oldest B: daily C: latest D: longest
Câu10.(2đ) Viết công thức tính công suất và nêu đơn vị của từng đại lượng có trong công thức. Nói công suất của một ô tô là 1500W điều đó có ý nghĩa là gì?.
Câu 3. (0.2 điểm) Wolfgang Amadeus Mozart was an Austrian musician and _____. A. singer B. composer C. dancer D. author Câu 16. (0.2 điểm) Our team won the gold medal and became the _____. A. champion B. championship C. tournamernt D. host Câu 18. (0.2 điểm) "This movie is boring and too violent." "I agree. _____ leave?" A. Will we B. Why don't we C. Must we D. Woulkd we Câu 19. (0.2 điểm) Many plants and animals can be used as medicine _____ cancer, AIDS and other sicknesses. A. against B. by C. with D. for Câu 20. (0.2 điểm) This kind of music is much different _____ that one. A. in B. at C. on D. from Câu 26. (0.2 điểm) If we _____ by coach, we _____ carsick. A. hadn't gone/ wouldn't have got B. didn't go/ wouldn't have got C. didn't go/ won't get D. hadn't gone/ would haven't got Câu 28. (0.2 điểm) If you _____ French, which language would you study? A. were studying B. are studying C. weren't studying D. have been studying Câu 30. (0.2 điểm) The Vietnamese are _____ to be hospitable and friendly. A. known B. knew C. knowing D. know Câu 33. (0.2 điểm) Many new roads _____ in our city this year. A. are building B. has been built C. are being built D. are being building Câu 34. (0.2 điểm) My students _____ about the changes of their timetable yet. A. hacve told B. are not told C. have been told D. haven't been told Câu 35. (0.2 điểm) Be sure to wash these vegetables thoroughly. A lot of pesticide residue _____ on unwashed products. A. can find B. can found C. can be found D. can be Câu 36. (0.2 điểm) When I woke up and looked outside, the landscapes had changed. The ground had been slightly _____ with a dusting of snow during the night. A. covering B. cover C. covera D. covered Câu 37. (0.2 điểm) When we arrived, the winner of the art competition _____ a prize. A. awarded B. were being awarded C. was awarding D. was being awarded
hấp thụ hoàn toàn 0,15 mol SO 2 vào 400 ml dd NaOH C mol/l, thu được 16,7 gam muối. C có giá trị là: A. 0,5 M. B. 0,75 M C. 0,7 M. D. 0,375 M
vẽ đồ thị hàm số y = 1/3 x|x|
câu 1 :Cụm từ “mùa xuân”trong câu nào dưới đây là trạng ngữ? A)Lớp em học bài mùa xuân của tôi. B)Mùa xuân,trăm hoa đua nở. C)Tôi rất yêu mùa xuân. D)Mùa xuân của Hà Nội. CÂU 2:Câu “Chiều nay, lớp ta đi học phụ đạo và lao động. » Cho biết thành phần trạng ngữ? A)Lớp ta. B)Chiều nay C)Học phụ đạo D)Lao động
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