Cho tam giác vuông tại A trên tia đối ac lấy điểm d sao cho ad = ac chứng minh tam giác BDC là tam giác đều

Cho tam giác ABC vuông tại A có M là trung điểm của BC. Trên tia đối của tia MA lấy điểm D sao cho MD = MA. a) Chứng minh  MAB =  MDC, từ đó suy ra  ACD vuông ; b) Gọi K là trung điểm của AC. Chứng minh KB = KD; c) KD cắt BC tại I và KB cắt AD tại N. Chứng minh  KNI cân. giúp mik pần c vs ạ QAQ

Nguyên nhân gây bệnh cho sâu hại là gì? So sánh chế phẩm sinh học( vi rút, vi khuẩn và nấm) phòng trừ sâu bệnh hại về nguồn gốc và biểu hiện khi sâu bị nhiễm bệnh

Giúp em với đc ko ạ. Em cảm ơn trước.

Câu 8, 9. Giúp mk nha. Mk đang cần gấp gấp lắm. Cảm ơn mn rất nhiều. Yêu mn rất nhiều

Rearrange the words and phrases given to make meaning full sentences: 1.Thanks / technology/ , /now/can/for/preserve/our/to/culture/future/we/generations/./ …………………………………………………………………………………………. 2.Vietnamese /plan/activities/ famylies/ around/ their/ children/on/many/their/special/days/./ ………………………………………………………………………………………………. 3.One /popular /the/is/the/Hung Kings/Temple/festivals/in/most/festival/of/Viet Nam/./ ……………………………………………………………………………………………….. 4.In/country/our/,/government/always/the/care/takes/of/people’slife/the/,/the/groups/ethnic/especially/./ ……………………………………………………………………………………………….. 5.Nowadays/are/using/more/for/villagers/motorcycles/of/instead/riding/or/a/horse/walking/ transport/./ ……………………………………………………………………………………………….. III. Make sentences using the words and phrases given : 1. It/such/difficult/question/all/students/can/not/answer/it/./ …………………………..…………………………..………………………………………… 8 / 8 2. Because/film/so/boring/,/I/feel/asleep/./ …………………………..…………………………..………………………………………… 3. If/you/take/exercise/regularly/,/you/stay/shape/./ …………………………..…………………………..………………………………................. 4. In spite of/ be/strong/,/he /can/not/move/that/stone/./ …………………………..…………………………..………. 5,We / just / take / part / the Mid -Autumn Festival /./ …………………………..…………………………..………………………………..................……………………………….

Mọi nguoeif giúp.mình giải bài 4.28 với ạ

IV. Fill in each blank with ONE suitable preposition. 1. I'm reading a book ……………..history of China. 2. Is it far …………….your house ……… school? 3. Is Tokyo the biggest city ……………..the world. 4. John's worried ………………his final exam. 5. What's HCM city famous ………………….? 6. Her sister is working ..…….a computer company. 7. What time does the library close? It closes ……………about half …………. four. 8. We look …………the new words in the dictionary. 9. What is your date ……..birth? - November eighth. 10. Farmers are very hard - working. They work ……………. morning ………….. night on their farms. 11. Mr. Minh is not at home now. He is ………………………………work. V. Give the correct form of the verbs in brackets to complete the following sentences. 1. What ………………………you (do) ……………….at the moment? I (watch) ……………………TV. 2. We (be) ………………………………………………students in four years. 3. A little girl can't spend all her time (listen) ……………………………… to stories. 4. We (play) …………………soccer this afternoon. Would you like (join) …………………………..? 5. You can borrow my umbrella. I (not/ use) ……………………….. it at the moment. 6. Look! The plane (fly) ………………………………………. towards the airport. 7. Nam (not visit) ………………………. the museum with his class last Sunday because he had a cold. 8. We (have) ……………… a birthday party last week and a lot of people (join)………………………… VI. Put these expressions in the gaps to complete the sentences

Các bn tìm lỗi sai cho mình nhé Câu 2. Cho dãy từ "thánh thót, líu lo, tí tách, ríu rít, tíu tít, ríu ran". 4.Từ không thuộc nhóm từ đó là (3 Điểm) Thánh thót Líu lo Tí tách Tíu tít Ríu rít Ríu ran 5.Từ đó không cùng nhóm với các từ còn lại vì? (3 Điểm)

III. Choose the best option to complete the sentence. 1. Minh used to _________his homework late in the evening. ( does/ do / doing / did) 2. If people _________the rules, there are no more accidents. ( follow / take care of / obey / remember) 3. You should _________right and left when you go across the roads.( see / look / be / take) 4. Hurry up or we can’t _________the last bus home. ( keep / follow / go / catch) 5. Public _________in my town is good and cheap. ( transport / tour / journey / travel) 6. _________is not very far from here to the city centre. ( That / This / It / There) 7. When there is a traffic jam, it _________me a very long time to go home.( costs/ takes / lasts / spends) 8. Mai’s dad usually drives her to school __her school is very far from her house.( but / though/ because / or) 9. Traffic accidents can be prevented if people _______ the rules ( remember / obey / go after / take care of) 10. Hurry up, or we'll _______ the last bus. (lose / avoid / miss / drop) 11. Does your bike ever __________ down on the way to school? ( break / take / do / turn) 12. Give a __________ before you turn left or right. ( sign / turn / sound / signal)