Làm bay hơi 20g nước từ dung dịch có nồng độ 15% thu được dung dịch có nồng độ 20%. Dung dịch ban đầu có khối lượng là: A. 70g B. 80g C. 90g D. 60g
1. Nam often ( study) __________ English in the afternoon. 2. They (not, learn) _____________________ English for five years. 3. I (buy) _______ this flowers for you. 4.I ( meet ) _____________ her at the movie theater last night. 5. We ( travel ) ________________ to Hue next month. 6. Be careful ! The cars ( come ) ___________ 7. My mother ( not, go ) ______________________ to the supermarket yesterday evening. 8. (he / drink ) _____________________ a lot of beer when he was young? 9. My mother ( not, ride ) ____________________a motorbike since last year. 10. If he (not, listen)___________, I'll turn off the radio. 11. The last time they ate seafood was two years ago. (not) --> They………………………………………………… 12. How long have you learned English? (start) --> When…………………………………… 13. I’ve never been to this restaurant before --> This is ................................................. 14. I haven’t visited my family since 2005. (time) --> The last time ………………………………………… 15. She has never seen the more amazing sight. (most) --> It’s………………………………………………… 16. No one in England is as famous as her. (most) --> She............................................................... 17. You should work hard, or you won’t pass the exam. --> If.................................................. 18. Shall we play badminton this weekend? --> How about…………………………………………… 19. Let’s write about that.--> Why………………………………… 20. Keep silent or you’ll wake the baby up. --> Unless..........................................
Giải giúp mình nhé Hứa vote 5* kèm cảm ơn
Giải hộ mình nha, nhanh nhất, đúng nhất thì mình cho câu trả lời hay nhé
Choose the underlined part ( marked A, B, C, or D) that contains an error: 13. It took me two hours doing my homework last night. A B C D 14. After the neighbor repaired the skirt, it looked beautifully. A B C D 15. Children are usually scared for seeing the dentist. A B C D 16. Nobody like him because he always looks untidied. A B C D
các bạn giải giúp mình bài 8,9,10 nhé
Tìm m,n để đồ thị hàm số y=mx+n đi qua B(3;5) và C(-2;7) Giúp tui vs =))
9. I don’t have ……… apples but I have ……………oranges. * C. some/any B. any/any D. some/some A. any/some 10. What color ……………. her eyes? * C. do A. is D. does B. are 11. ………………… is a pen?. It is 5,000 dong. * A. How many D. How much B. How C. How often 12. She isn’t strong. She is …………… * A. weak B. tall D. heavy C. short
1.Hình thang ABCD có góc A =D=90° và AB =AD =3cm ; DC= 6cm.Tính các góc còn lại
Chọn từ khác loại A repair B refillable C recycled D reusable
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