Cho ∆DEF vuông tại D có = 30°, Kẻ DH ^ EF; HN ^ ED; HM ^ DF a/ Chứng minh: DMHN là hình chữ nhật và MN = DE/2 b/ Chứng minh: DN.DE = DM.DF c/ Chứng minh: DM²/EH²+DM²/DH²=1 d/ Đường trung tuyến DK của ∆DEF cắt MH tại I. Chứng minh: 1/DH²+1/DI²=1/HN²

GIÚP VS Ạ MONG ĐC CÁC BN GIÚP ĐỠ

Question I. Find the word which has different sound in the part underlined. 1. A. washed B. walked C. stopped D. played 2. A. character B. chapter C. school D. chemistry 3. A. hear B. fear C. clear D. bear 4. A. study B. music C. fun D. subject 5. A. happy B. house C. here D. hour 6. A. maps B. papers C. cats D. books 7. A. pollution B. question C. education D.communication 8. A. school B. archaeologist C. choose D. chemistry 9. A. those B.there C. that D. thanks 10. A. leader B. great C. disease D. clean Question II. Find the word which has different stress pattern from the others. 1. A. unlimited B. undeveloped C. unsuccessful D. unaffected 2. A. primary B. animal C. tropical D. volcano 3. A .climatology B. bibliography C. communication D. radiography 4. A. creativity B. immature C. negative D. nationality 5. A. impossible B. importantly C. stability D. connectivity 6. A. unlimited B. illogical C. conservation D. priority 7. A. opportunity B. competitive C. communicative D. unfortunate 8. A. authority B. impolite C. unhealthy D. repetitive 9.A. pollution B. picture C. village D. factory 10.A. illustrate B. believe C. affect D. volcano

IV, Rewrite these sentences (2pts) 1, Mai is a careful worker than Lan. - Mai works ………………………………………………………………………….. 2, A businessman travels more expensively than a tourist. (cheaply) - A tourist …………………………………………………………………………….. 3, That boy is interested in doing yoga in his free time. (adore) - That boy……………………………………………………………………………… 4, (My mother) is going to the meeting tomorrow. (make question for the underline words) - Which of your………………………………………………………………………? 5,(Yes. Red is the symbol of luck for the Hoa people) . (make question for the answer) - …………………………………………………………………………………

1 We were all very impressed by the student’s mental ...... 2 My grandmother is very intelligent but she’s had little formal .... 3 I’ve never found it easy to learn scientific formulae by ..... 4 I’d love to study medicine there but it’s very hard to get a ... 5 For the first-year Shakespeare exam we had to read six set ..... 6 I am so proud of you for managing to get full ..... 7 Your work is not too bad but there is certainly still room for ..... 8 Your little girl has shown herself to be a very quick ... 9 The test has been designed to enable pupils to demonstrate their .... 10 I hope to study there but I may not be able to meet the entry.... Từ gợi ý: heart,place,education,ability,requirements,agility,learner,marks,texts,improvement. Nhanh ạ

Choose the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following sentences. I find playing sports an exciting way to exercise. A. regular B. boring C. interesting D. normal 22 Find the word which has a different stress pattern from the others . A. common B. happy C. joyful D. complete

thuyết minh về cây tre việt nam mở bài bằng thơ thanks

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nhanh nha Câu 1. Máy tính để bàn có các bộ phận chính là: * A. Màn hình, chuột, phần thân máy. B. Màn hình, thân máy, chuột, bàn phím. C. Màn hình, bộ xử lí, công tắc, ổ cứng. D. Đáp án A và C. Câu 4. Trong phần mềm Paint, để sao chép hình em giữ phím nào trong khi kéo rê chuột: * Ctrl Tab Shift Alt Câu 6. Trong phần mềm Paint, để vẽ đường thẳng nằm ngang hoặc thẳng đứng, em giữ phím nào khi kéo thả chuột? * Ctrl Enter Shift Alt Câu 10: Để lưu bài trình chiếu em nhấn tổ hợp phím? * Crtl+L Crtl+S Crtl+V Crtl+N

Làm 5 chuỗi thức ăn sau đó gộp thành lại 1 lưới thức ăn