Thiên nhiên và lao
Cho tam giác ABC vuông tại A.Tia phân giác góc C cắt AB tại E.Trên cạnh BC lấy điểm D sao cho CD=CA a. Chứng minh tam giác CAE=CDE b.Chứng minh CE là đường trung trực AD c.Tia DE cắt CA tại K. Chứng minh CK=BC d.Tìm điều kiện của tam giác ABC để BK=2AK
Xác định trạng ngữ trong câu dưới đây và tách trạng ngữ thành câu riêng. Cho biết tách trạng ngữ thành câu riêng có tác dụng gì ? Nam không ăn gì cả đã 2 ngày rồi
Hình nào đã khoanh tròn 1/4 ạ
Mấy bạn xinh trai đẹp gái ơi, giúp với
III. Put the verbs in brackets. Present simple or present continuous. 1. I (not/belong) ............................... to this particular government committee. 2. Hurry? The bus (come) ............................... (not/want) ................................ to miss it. 3. Martha is a vegetarian. She (not/eat) ............................... meat. 4. I (look) ............................... for the manager. I can’t find him anywhere. 5. We are successful because we (take) .................................... the time to talk to our customers. 6. John (deaf) ............................... with all the enquiries about sales. 7. At the moment we (make) ............................... a training video for Siemens. 8. (you/know) ............................... what Mr. Brown is doing? He is not in his office. 9. Unemployment (fail) ............................... and is now down to 5.6%. 10. Jane is doing some research in the library. She needs it for a book she (write) ............................. IV.Put the verbs in brackets: Present perfect or present perfect progressive. 1. How long (you/ know) ......................................... Gerry? 2. You look dirty. What (you/ do) .........................................all day? 3. How many times (Charles/ visit) ......................................... New York? 4. She (learn) ......................................... French words for hours, but she still doesn’t remember all of them.7 5. The children (watch) .........................................videos for two hours. 6. (he/ study) ......................................... hard today? 7. Sorry, I’m late, (you/ wait) .........................................for long? 8. We (not/ see) ......................................... Lisa recently. 9. He (write) .........................................his essay all day, but he hasn’t finished yet. 10. How long (he/ wait) .........................................for her? V. Mark the letter A, B, C or D to indicate the correct answer to each of the following questions. 1. She can’t come to the phone now because she ..................... tomorrow’s test. A. studies B. is studying C. has studied D. has been studying 2. They must be at the sports ground now. They usually ..................... basketball on Fridays. A. play B. are playing C. have played D. have been playing 3. I ..................... my work already. I’m ready to go for a walk with you. A. finish B. am finishing C. have finished D. have been finishing 4. I ..................... breakfast right now. Can you call a tittle later? A. cook B. am cooking C. have cooked D. have been cooking 5. I ..................... this book. Can I borrow it for a week or so? A. don’t read B. am not reading C. haven’t read D. haven’t been reading 6. Maria is good at languages. She ..................... French, Spanish and German. A. speaks B. is speaking C. has spoken D. has been speaking 7. So far, he ..................... five stories for children. A. writes B. is writing C. has written D. has writing 8. We ..................... for their answer for two months already A. wait B. are waiting C. have been waited D. have been waiting 9. She ..................... since Monday. A. is sick B. is being sick C. has been sick D. has been being sick 10. She ..................... since noon. Should we wake her up? A. sleeps B. is sleeping C. has been sleep D. has been sleeping VI. Put the verbs in brackets in the correct form. 1. She always (remember) ...................................my birthday. 2. Look! It (snow) ................................... 3. How long (know) ................................... Simon? 4. Can you hear those girls? What (they/ talk) ...................................this exam? 5. How many times (you/ take) ...................................this exam? 6. He (eat) ...................................six bars of chocolate today! 7. When I’m in Paris I (usually/stay) ...................................in the Hotel Du Pont, but this time I (stay) ................................... in the more expensive Hotel Notre Dame. 8. (they/ arrive) ...................................already? 9. My father (be) .............................. an engineer, but he (not/work) ............................... right now. 10. My parents (live) ...................................in Sydney. Where (your parents/ live) ......................
Cho tam giác ABC vuông tại A,tia phân giác của góc B cắt AC ở D.DH ⊥ BC (H ∈ BC) a) So sánh hai cạnh BH và BA b)So sánh hai cạnh DA và DC
Là những học sinh đang ngồi trên ghế nhà trường, các em cần làm gì để góp phần bảo vệ những di sản quý giá ấy? bài 24: nước Cham- Pa từ thế kỉ II đến thế kỉ X
Em đang cần gấp ai giúp em với ạ :((
thống kê các kiểu văn thuyết minh lớp 8 ...... giúp mình vớii
Giúp em giải bài này với ạ! Nếu có thể thì lời giải chi tiết giúp ạ!
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