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baomun250
2 năm trước
Cho 4,48 lít CO2 (đktc) vào m gam dd NaOH nồng độ 8% thu được dd X.Trong đó nồng độ phần trăm của NaOH giảm đi một nửa so vớ ban đầu. Tính giá trị của m.
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10 Read the following passage, then choose the correct answer to questions: Yesterday, on the way home from school, I saw an accident. A boy was run over by a taxi when he was riding his bicycle. The boy"s leg was broken and it was bleeding badly. Someone there tried to stop the bleeding. They put pressure on it and held it tight. A man used his mobile phone to call the emergency service. Some minutes later, an ambulance arrived and sent the boy to the hospital. Two policemen came to the scene immediately. Some people told the police that the taxi driver was driving at a very high speed when the accident happened. Some others began talking about the traffic accidents these days and blamed the increasing number of accidents on the roads for careless driving and drunk drivers. Why does the number of accidents begin to increase these days? A. Because people don’t watch when crossing the roads. B. Because of careless driving and drunk drivers. C. Because careless driving and drunk drivers. D. Because drivers don’t stop when the lights turn green 11 Mark the letter A, B, C, D on your answer sheet to indicate a meaningful sentence from the words and phrases given parents / I went / Thailand / take part / the Songkran Festival / last April. A. My parents and I go to Thailand to take part in the Songkran Festival last April. B. My parents and I went to Thailand and take part in the Songkran Festival last April. C. My parents and I went to Thailand to take part with the Songkran Festival last April. D. My parents and I went to Thailand to take part in the Songkran Festival last April. 12 Mark the letter A, B, C, D on your answer sheet to indicate a meaningful sentence from the words and phrases given Save / energy / one / best / way / conserve / natural / resources // A. Saving energy is one of the best ways to conserve natural resources. B. Save energy is one of the best ways conserve natural resources. C. Saving energy is one of the best ways conserve natural resources. D. Save energy is one of the best ways to conserve natural resources. 13 Choose the sentence which has the same meaning with the given one. Despite the fact that it was snowing, I didn’t feel cold. A. Although I didn’t feel cold, it was snowing B. In spite of the snow, I felt quite cold. C. In spite of feeling warm, it was snowing. D. Although it was snowing, I didn’t feel cold. 14 Read the following passage, then choose the correct answer to questions: Yesterday, on the way home from school, I saw an accident. A boy was run over by a taxi when he was riding his bicycle. The boy"s leg was broken and it was bleeding badly. Someone there tried to stop the bleeding. They put pressure on it and held it tight. A man used his mobile phone to call the emergency service. Some minutes later, an ambulance arrived and sent the boy to the hospital. Two policemen came to the scene immediately. Some people told the police that the taxi driver was driving at a very high speed when the accident happened. Some others began talking about the traffic accidents these days and blamed the increasing number of accidents on the roads for careless driving and drunk drivers. What part of his body was hurt? - His _________. A. shoulder B. head C. leg D. arm 15 Mark the letter A, B, C, D on your answer sheet to indicate a meaningful sentence from the words and phrases given people / love / festivals / because / advantages / they / bring about. A. People love festivals because with the advantages they bring about. B. People love festivals because the advantages they bring about. C. People love festivals because of there are advantages they bring about. D. People love festivals because of the advantages they bring about. 16 Read the following passage, then choose the correct answer to questions: The world’s first film was shown in 1895 by two French brothers, Louis and Auguste Lumiere. Although it only consisted of short and simple scenes, people loved it and films have been popular ever since. The first films were silent, with the title on the screen to explain the story. Soon the public had their favourite actors and actresses and the first film stars consequently appeared. In 1927, the first “talkie”, a film with sounds, was shown and since then the public would only accept this kind of films. Further improvements continued, particularly in America, where 90 percent of all films were produced. With the arrival of television in the 1950s, fewer people went to see films. However, in recent years, the number of audiences has increased again. More countries have started to produce films, film-making has been influenced. In particular, there are currently many national film industries. 1.What is NOT true about Louis and Auguste Lumiere? A. They made the world’s first film. B. Their film consisted of short, simple scenes. C. They were French brothers. D. They were very first film stars.

“ Trong đình, đèn thắp sáng trưng, nha lệ lính tráng, kẻ hầu người hạ đi lại rộn ràng. Trên sập mới kê ở gian giữa có một người quan phụ mẫu uy nghi chễm chện ngồi. Tay trái dựa gối xếp, chân phải duỗi thẳng ra để cho tên người nhà quỳ ở dưới đất mà gãi. Một tên lính lệ đứng bên, cầm cái quạt lông chốc chốc lại phe phẩy. Tên nữa đứng khoanh tay chực hầu đếu đóm. Bên cạnh ngài, mé tay trái, bát yên hấp đường phèn, để trong khay khảm khói bay nghi ngút, tráp đồi mồi chữ nhật để mở, trong ngăn bạc đầy những trầu vàng, cau đậu, rễ tía, hai bên nào ống thuốc bạc, nào đồng hồ vàng, nào dao chuôi ngà, nào ống vôi chạm, ngoáy tai, ví thuốc, quản bút, tăm bông trông mà thích mắt. Chung quanh sập, bắc bốn ghế mây, bắt đầu từ phía hữu gian, thì có thầy đề, rồi lần lượt đến thầy đội nhất, thầy thông nhì sau hết giáp phía tay tả ngài, thì đến chánh tổng sở tại cũng ngồi hầu bài” Câu 2: Tìm trong đoạn văn câu văn có sử dụng phép tương phản đối lập.

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