user-avatar
jodieduc2004
2 năm trước
Rút gọn hộ mình với ạ A = sinx + sin4x + sin7x / cosx + cos4x + cos7x B = sin2x + sin4x + sin6x / 1 + cos2x+ cos4x
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

8. If I............time tonight, I ............ the novel I'm reading. a. will have/ finish b. have/ will finish c. have had/ will finish d. have/ have finished 9. If it ............ next week, we ............ plant the vegetables. a. rains/ won't be able to b. will rain/ aren't going to c. rains/ aren't going to d. will rain/ don't plan 10. Get me a glass of lemonade if you............to the kitchen. a. go b. will go c. have gone d. went 11. ............ your computer if I'm careful? a. Will I use b. Do I use c. Use I d. Can I use 13. If you.................... this switch, the computer...................on. a. press/ comes h. will press/ comes c. press/ can come d. have pressed/ will come 14. If you............ with the computer, I'll put it away. a. will finish b. have finished c. had finished d, finished 15. If Matthew is going to a job interview‘, he .............. a tie. a. will wear b. can wear c. should wear d. might wear

1. _________________use energy-saving bulbs? * 1 điểm A. Let's B. Why don't we C. How about D. I think we should 2. A __________________________faucet can waste 500 liters of water a month. * A. drip B. to drip C. dripping D. dripped 3. A(n)_________________ has just checked the pipes in the kitchen. * A. electrician B. carpenter C. consumer D. plumber 4. Let's collect unused clothes for street children. =* A. I suggest that collecting unused clothes for street children. B. I suggest that we should collect unsused clothes for street children. C. I suggest to collect unused clothes for street children. D. I suggest that we should collecting unused clothes for street children. 5. Electricity , gas and water are not luxuries but __________________. * A. need B. necessary C. necessity D. necessities 6. What about __________________ off the lights and TV? * A. turn B. turning C. turned D. to turn 7. Scientists are looking for an_________________way to reduce energy consumption. * A. effective B. luxurious C.necessary D. natural 8. ________________want products that will not only work effectively, but also save money. * A. Plumbers B. Consumers C. Conservationists D. Environmetalists 9. Lighting _____________________15% of the electricity bill. * A. wastes on B. replaces with C. accounts for D. compares with 10. We should replace ordinary bulbs ____________energy-saving bulbs. * A. with B. for C. on D. in

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team