Cho một tia sáng đi từ môi trường có chiết suất 1,4 m không khí A. Tính gốc sự hạn phản xạ toàn phần B. Hãy cho biết khi góc tới y = 20 độ thì đường truyền tiếp theo của tia sáng như thế nào? Giúp em vs

Hãy viết một đoạn văn ngắn từ (100 từ đến 120 từ) để nói về chủ đề cho sẵn dưới đây. (ko sao chép mạng) Your family on next Sunday.

tìm các chữ số a,b,c thỏa mãn abc-cba=1b8

Vẽ đậu mầm hặc thứ gì đó cute.(đẹp cho ctlhn, nhiều điểm đó nên đừng spam).

Cho(O) từ điểm A nằm ngoài đường tròn (O) .vẽ hai tiếp tuyến BA VÀ AC với đường tròn kẻ dây CD // AB nối AD cắt đường tròn (O) tại E . Kéo dài CE cắt AB tại I . Chunges minh IA =IB

I, Multiple - Choice: 1, She gets up at 6 and meditates ____________ an hour before going to work. A. during B. while C. for D. through 2, He ____________ robbed as he was walking out of the bank. A. had B. did C. got D. were 3, Three years ago, my father ____________ with cancer. A. was diagnosed B. had diagnosed C. diagnosed D. was being diagnosed 4, She was working on her computer with her baby next to ____________. A. herself B. her C. her own D. hers 5, Police arrested a man late last night in connection with the murder. Police expect to charge the ____________ later this morning. A. guilty B. suspect C. condemned D. arrested 6, Marie Curie, one of the best-known ___________ in working with radiation, died in 1934. A. debutants B. revolutionaries C. pioneers D. rebels 7, No pharmaceutical compounds have proven effective _______________ neurons or helping the body establish new neural pathways. A. in permanently restoring B. permanent restoration of C. at restoring permanence of D. at permanent restoration in 8, John: "Do you know when Professor Smith's expected to give us our grades?" Jessa: "I'm certain she'll do it ______________.” A. as soon as she's able B. she's able to do it soon C. soon she's able to D. however she's soon able to 9, The comparison to others as a ______________ for social class continues and is being driven by a variety of factors, including prolific advertising and easy credit to _______________ consumers. A. guideline - lobby B. benchmark - endorse C. pattern - hype D. point - entice 10, _______________, the same students who participate in the program in winter should continue to work on the project in spring, to ensure continuity. A. Ideally B. Promptly C. Afterwards D. Beforehand

Hoàn thành câu thứ hai sao cho nghĩa của câu không thay đổi so với câu thứ nhất. Sử dụng từ cho trong ngoặc và không được thay đổi từ này. 1. Are there any beautiful flowers and tall trees in the central park? HAVE  ............................................................................................................................................. 2. Her grandmother needs half a kilo of pork. GRAMS  ............................................................................................................................................. 3. No sudent in the class is taller than John. TALLEST ………................................................................................................................................... 4. Trang gets up at five forty-five every morning. A  ……………………............................................................................................................... 5. Mr. Quang always goes to the vegetables market in his car. DRIVES  ………….……………………………………….…….........................................................

Viết lại các câu sau đây sao cho nghĩa của câu không thay đổi, bắt đầu bằng từ gợi ý cho trước. 1. Nguyen Du Street is shorter than Nguyen Trai Street.  Nguyen Trai Street ............................................................................................................. 2. How far is it from your house to your school?  What is ……………………………………………………………………………………? 3. What about not going to the movie theater by minibus?  Let’s ................................................................................................................................... 4. My friend Mary plans to buy something for the picnic.  My friend Mary is .............................................................................................................. 5. Near our uncle’s house, there isn’t a lake.  Our uncle’s house is .…………………………………..………………………………….

Read the passage the choose the word or phrase the best fits each space I don’t usually eat breakfast. I only have _______(1) of coffee. I don’t eat _______ (2) until about eleven o’clock. Then I have a biscuit and a glass of _______ (3) . For lunch I usually have a salad. That’s _______ (4) about two o’clock. I have _______(5) at half pass six in the afternoon. I’m a vegetarian, so I don’t eat _______(6) or fish. I eat cheese and eggs and things like that. I have a glass of water or fruit _______(7) with my meals. At the weekends, I go to a _______(8) in the evenings. You can_______(9) vegetarian meals in a _______(10) restaurants now. 1. A. a packet B. a cup C. a can D. a bar 2. A. any B. some C. anything D. something 3. A. peas B. rice C. chocolates D. milk 4. A. at B. on C. in D. for 5. A. breakfast B. lunch C. dinner D. supper 6. A. meat B. rice C. vegetables D. noodles 7. A. water B. soda C. juice D. lemonade 8. A. store B. restaurant C. shop D. apartment 9. A. get B. getting C. to get D. gets 10. A. many B. much C. dozen D. lot of

Ai đã dùng app MediBang chuyên nghiệp chỉ mình vẽ vs ạ Chụp từng bước nha!! Hứa vote!!