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hattbn2k
2 năm trước
Cho a mol K tác dụng hoàn toàn với 200ml dung dịch H2SO4 2M. kết thúc phản ứng , thu được dung dịch X . dung dịch X hòa tan vừa hết 10,2 gam Al2O3. tính a
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Bài 5: Hoàn thành câu với những động từ cho sẵn ( thì QKĐ): *Các từ: disturd, put, like, be, have, hold, decide, sleep, stay, cost. 1. It was freezing outside, so I ......on my coat. 2. My mother was very busy yesterday, so I.....her. 3. Yesterday was Mary's birthday but she.....a party. 4. We were exhausted, so we.....to leave the party early. 5. The bed was very uncomfortable. Tim....well. 6. The musical wasn't very good. I ....it much. 7. The restaurant wasn't very expensive. It....much to have dinner there. 8. I had to look after my little sister yesterday, so I......time to call you. 9. It......hard to lift the boxes. They weren't very heavy. 10. I was raining heavily, so I......in (Không cần giải thích) sẽ vote 5*, chọn là câu trả lời HN cho các bạn ♥️

BÀI 4: Điền mạo từ ‘a’, ‘an’ hoặc 0 vào chỗ trống sao cho thích hợp. 1. She asked me for ___ information about the meeting. 2. They will move to ___ mansion next month. 3. I’d like ___ grapefruit and ___ orange juice. 4. ___award was given to Jim yesterday. 5. We read ___ books and play ___ games when we have free time. 6. Jim doesn’t want to borrow ___ money from anyone. 7. My friend and I threw ___ party last week. 8. It was ___ honor to be invited here today. 9. I’ve bought ___ umbrella for my sister. 10. My family often have____ eggs for breakfast.11. Would you like______cup of tea? 12. My brother doesn’t like ______ cats. 13. Is there __________post office here? 14. I spend _________hours on my DIY project. 15. Mr. Peter used to be ___________famous vet

1. Volunteers become more ________ of the problems facing the world. A. concerned and unaware B. concerning and unaware C. concerned and aware D. concerned but aware 2. If you are in traditional hand-made products and are on the volunteer project for several weeks, you may have the opportunity to learn the ________ and embroidery skills from the artisans. A. interested - weaving B. interesting - weaving C. interested - woven D. interesting - woven 3. Volunteer’s main work at the projects is to take care of the children, most of whom have ________ are affected by Agent Orange. A. mentally and physically disabilities B. mental and physical disabled C. mental, physical and disabled D. mental and physical disabilities 4. Volunteers For Peace Viet Nam (VPV) offers ________ programmes in North and South Viet Nam. A. dedicate B. dedicated C. dedication D. dedicating 5. Together with volunteers, through our daily activities, we try to protect children from ________ effects from society. A. harm B. harmful C. harmless D. unharmed 6. In our volunteer programme, the possibilities are ________ , and all you need is determination and a little creativity. A. end B. ending C. endless D. everlasting 7. While Tom ________ English to poor children in Phnom Penh last year, he ________ a lot about Cambodian culture. A. is teaching – knows B. taught - was knowing C. was teaching - knew D. was teaching - was knowing 8. My passion for volunteering to help children ________ during my middle school years while I ________ for the summer community service. A. begin - work B. began - was working C. have begun - have worked D. was beginning - was working 9. Volunteers ________ games and ________ activities with disadvantaged children while they ________ for the center. A. played - had - worked B. were having - having - were working C. have played - playing - are working D. played - had - were working 10. “ ________ your country can do for you - ________ you can do for your country.” (from John Kennedy’s inaugural address). A. Don’t ask what - ask what B. Ask what - don’t ask what C. Ask not what - ask what D. Ask what not - ask what

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