Cho 55mũ n +1 trừ đi 55 mũ n.Cm r chúng chia hết cho 54

Câu 31. Nguyên nhân sinh ra thủy triều? Câu 32. Độ muối hay độ mặn trung bình của nước biển và đại dương là bao nhiêu? Câu 33. Nguyên nhân chủ yếu sinh ra sóng là do: Câu 34. Độ muối của nước biển và đại dương là do: Câu 35. Biển Ban-tich có độ muối rất thấp là do: Câu 36. Nguyên nhân chủ yếu gây ra sóng thần là do: Câu 37. Trên thế giới có mấy loại dòng biển: Câu 38. Sóng biển là:

Giải giúp mình bài này với. Mình cần gấp

I. Choose the best answer by underline the word 71. The colors of the rainbow is/are beautiful. 72. There is/are a problem with the balance sheet. Here is/are the papers you requested 73. The cow and the pig is/are jumping over the moon. 74. Red beans and rice is/are my mom's favorite dish. 75. No smoking or drinking is/are allowed. Every man and woman is/are required to check in. 76. Jessica or Christian is/are to blame for the accident. 77. All of the chicken is/are gone. All of the chickens is/are gone. 78. Four quarts of oil were /was required to get the car running. 79. The study of languages requires /require time. 80. The president, together with his advisors, is/are coming.

I. Choose the best answer by underline the word 61. A large percentage of the older population is/are voting against her. 62. Two-fifths of the troops were /was lost in the battle. 63. Two-fifths of the vineyard were /was destroyed by fire. 64. Forty percent of the students is/are in favor of changing the policy. 65. Forty percent of the student body is/are in favor of changing the policy. 66. Two and two is/are four. 67. Four times four divided by two is/are eight. 68. The department members but not the chair has / have decided not to teach on Valentine's Day. 69. It is not the faculty members but the president who decide / decides this issue. 70. It were /was the speaker, not his ideas, that has/ have provoked the students to riot.

Dạng 5 : Phân tích đa thức thành nhân tử bằng phương cách phối hợp nhiều phương pháp

Giải chi tiết giúp mik vs ạ! Mik cảm ơn ạ^_^

1 ‘You … have called your little sister a brat.’ ‘Sorry. It won’t happen again. A could B ought C should D needn’t 2 … to nag me in front of my friends? A Could you need B Did you need C Should you need D Might you need 3 The meeting … in disaster but Bill had one more trick up his sleeve. A might have end B had to end C had to have ended D could have ended 4 You … more thoughtful and sent your grandmother flowers for her birthday. A might have been B should have been C needn’t have been D didn’t need to be 5 ‘Mum … me to this terrible camp.’ ‘You should have thought about that before you got expelled from school.’ A should never to have sent B could never to send C ought never to have sent D needn’t ever have send 6 Kerry … take her books to school today because we aren’t having any lessons. A didn’t have to B might not have C could not have D ought not 7 ‘My dad is picking us up after the concert.’ ‘Good. That means we … a bus or taxi.’ A couldn’t have got B don’t have to getting C might not have got D don’t need to get 8 Dad thinks I … called the police when that boy hit me instead of letting him get away with it. A ought B ought to C ought to have been D ought to have 9 You … me to ask your sister out; I would have anyway. A needn’t have forced B couldn’t force C might not have forced D didn’t have forced 10 You were wasting time because you … studying and not sitting there watching TV. A should to have been B ought to have been C ought to be D should to be 11 ‘You … worried about Jane liking her present.’ ‘I know. She was over the moon.’ A needn’t have B couldn’t have C mightn’t have D can’t have 12 Henry didn’t want to … to his dad’s nagging but he felt he had to show him some respect. A be listening B have listened C listen D listening

Help me ! Chỉ cần mỗi đáp án thôi nhé !

I. Choose the best answer by underline the word 51. Here is/are two apples that you want. 52. My glasses were /was on the bed. 53. My pants were /was torn while I was climbing up the tree yesterday morning. 54. A pair of plaid trousers is/are in the closet. 55. The news from the front page is/are bad. 56. Measles is/are a dangerous disease for pregnant women. 57. My assets were /was wiped out in the depression. 58. The average worker's earnings have/has gone up dramatically. 59. Our thanks go /goes to the workers who supported the union. 60. Some of the voters is/are still angry.