user-avatar
vuhanh261002
2 năm trước
Hoàn thành chuỗi phản ứng: Fe →FeCl2 →Fe(OH)2 → FeO→FeSO4 →FeCl2
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I - Read the text. Then choose the right answer A, B, C or D. Last year, we had a nice holiday. My friend and I went to the seaside for a month. I had been to the seaside several times before, but this was the first time for my friend. Naturally, it was the great event for him. Finally, the day came. It was a fine morning. We got up very early because we wanted to leave home after breakfast. We made the journey by car. We reached the seaside at noon. We spent many hours on the beach. We enjoyed making castles and channels in the sand. People said we ought to spend at least a few weeks here. If we could stay longer, so much the better. 39. How long did the writer and his friend spend at the seaside? A. week B. A few weeks C. A month D. A few months 40. Who went to the seaside the first time? A. The writer B. The writer and his friend. C. The writer's family. D. The writer's friend. 41 . What was the weather like on the day they started their journey to the seaside? A. It was bad. B. It was rainy. C. It was snowy. D. It was nice. 42. How did they travel to the seaside? A. By car B. By train C. By bus D. By air 43. When did they reach the seaside? A. At 8 o'clock B. At 12 o'clock C. At 4 p.m D. At 9 p.m 44. What did they enjoy making in the sand? A. They enjoyed making castles. B. They enjoy to make castles and channels. C. They enjoyed to make castles and channels.D. They enjoyed making castles and channels. II - Alexander Fleming was born in 1881 in Scotland. He went to a small school in a village, and when he left school he didn't go to university. He worked for five years in an office. But his brother, Tom, was a doctor and helped Fleming to go to university and study medicine. So he went to London University and in 1906 he became a doctor. In 1915, Fleming married Sarah McElroy, an Irish woman. They had one son. During the First World War, many soldiers died in hospital because they didn't have the right medicines. So after the war, Fleming tried to find a drug that could help them. He worked for many years and in 1928 he discovered a new drug and he called it "penicillin". He later worked with an Australian and a German scientist to develop a drug that doctors could use. In 1945, they won the Nobel Prize in medicine for their work on penicillin. 1. Where was Alexander Fleming born? ............................................................................................... 2. Did he work in an office before he went to university? ................................................... 3. What did he study at university? ................................................................................................... 4. When did he win the Nobel Prize in medicine? ...................................................................................................

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