user-avatar
lelyly1977
2 năm trước
(1/3x5+1/5x7+1/7x9+.....+1/19x21) x X =9/7
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Question 1: Put the verbs in brackets into the suitable tenses, including passives if necessary(12 points).The mystery of the Mary Celeste is one of the greatest mysteries of the sea. AnAmerican sailing ship, the Mary Celeste set sail from New York on 5 November 1872 - boundfor Genoa in Italy, with a cargo of 1,700 barrels of commercial alcohol.A month later - on 5 December - she (61 sight) .........................east of the Azores, in theeastern Atlantic, by a British ship, the Dei Gratia. By an amazing coincidence, the master ofthe British ship, Captain David Reed Morehouse, and the master of the Mary Celeste , captainBenjamine Spooner Briggs (62 dine) .......................together in New York the night before theMary Celeste (63 set sail) ......................So Morehouse (64 realize) ....................., that the MaryCeleste (65 sail) ......................in the wrong direction. What could be the ship doing, he (66wonder) ...................? Having hailed his friend's ship and got no reply, he (67go) ....................... to investigate. There (68 be) .........................nobody on board. CaptainBriggs, his wife and two-year-old daughter (69 all vanish) ...................... The last entry in theship's log was for 25 November, on which day the Mary Celeste (70 be) .................. within sixmiles of the Azores.An enquiry (71 hold later) ....................... in Gibraltar, but to this day the mystery of theMary Celeste ( 72 never solve) .................... .

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