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Mình đang cần gấp á Hứa vote 5sao + câu trả lời hay nhất Pha 60 ml Rượu 96o bằng 120ml nước cất thu được 180ml dung dịch rượu a.tinh độ rượu của dung dịch rượu A b. Cho Na dư t/d với dung dịch rượu A Hãy tính V khí H2 thu được (biết D r­ườu = 0,8 g/ml , D H2O = 1 g/ml)

COULD THE PUTURISTIC TRAVELING TUBE BECOME A REALITY? Can you imagine traveling in a tiny pod, inside a tube that can quickly shoot people to (48) ​_ they want to go? It sounds like something out of a silly cartoon or a movie about the future. But this futuristic tube may soon become (49) ​. And it could be a faster, easier, and cheaper way to travel than anything we know now. Elon Musk is a very wealthy South African-American (50) ​. In the past, he has worked on private space flight and electric cars. Recently, Musk has been planning this futuristic traveling tube, called the Hyperloop. Musk said that he (51) ​​_ up with the idea for the Hyperloop whAe thinking about the train that takes people between Eos Angeles and San Francisco. That train is known for being one of the slowest trains in the country. But the Hyperloop would be (52) ​faster. In fact, it could go about twice as fast as an airplane and three or four times as fast as the fastest train in the world. People using the Hyperloop would shoot (53) ​_ in pods, which are each just over six-and-a-half feet across. The pods would travel through tubes that are (54) ​ above ground or under water. The Hyperloop could even run all day and night, and it could let people travel on their own schedule. People could (38) ​​_ at the above ground or under water. The Hyperloop could even run all day and night, and it could let people travel on their own schedule. People could (55) ​_ at the Hyperloop station. 48. A. wherever B. whenever C. whatever D. however 49. A. really B. real C. reality D. unrealistic 50. A. explorer B. browser C. inventor D. owner 51. A. got B. came C. caught D. turned 52. A. more B. nearly C. very D. much 53. A. around B. across C. out D. down 54. A. both B. only C. neither D. either 55. A. get off B. take over C. show up D. turn back

Câu 1:Nhóm động vật nào thụ tinh trong và con non phát triển trực tiếp A. Cá voi, cá thu, ếch B. Trai sông, thằn lằn, rắn C. Chim, gà, thỏ D. Cóc, nhái, tôm Câu 2 Có quan hệ họ hàng gần vs Cá hơn là: A. Tôm sông C.Ốc sên B.Châu chấu D.Ếch đồng

Giải bài này hộ em em cảm ơn mọi ng

Mn sửa giúp em nha , $\frac{x+5}{x^2-5x}$ - $\frac{x-5}{2x^2+10x}$ = $\frac{x+25}{2x^2-50}$

Write the second sentence so that it has the same meaning to the first one. Use the words given. 1. Because of the bad weather, the plane couldn’t touch down. (IMPOSSIBLE) Bad weather made it ​. 2. My brother likes Science fiction books very much. (FOND) My brother ​. 3. ‘I’ve already see the New-Tech Exhibition.” (SAID) Peter ​. 4.”The plane will be leaving in thirty-five minutes.” (ANNOUNCED) They. 5.A robot will easily handled all household chores in the near future. (BE) All household chores ​. 6.Thomas Edison established his first laboratory facility in 1876. (UP) Thomas Edison ​. 7. “What about going to the Science and Technology Fair?” Mark said to me. (SHOULD) Mark ​. 8. Don’t waste time persuading him to go with us. (WORTH) It’s ​. 9. Why has no One thought of a way to make aircraft quieter? (COME) Why ​. 10. We arrived at the cinema, but the film had finished. (TIME) By

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Một nhóm học sinh có 12 bn, số bạn trai bằng một nữa số bạn gái, nhóm đó có mấy bạn trai mấy bạn gái Giúp em với

Một phân xưởng luyện kim mua tổng cộng 15 tấn quặng sắt gồm 2 loaị.Loại thứ nhất có chứa 3 tấn sắt nguyên chất ,loại thứ hai có chứa 1 tấn sắt nguyên chất.Tính khối lượng mỗi loại quặng mà phân xưởng đã mua biết tỉ lệ sắt nguyên chất trong loại quặng thứ hai là 10%