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Thúy An
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Bài 2: Một vật sáng AB, có dạng mũi tên cao 6cm đặt vuông góc trục chính của thấu kính hội tụ, cách thấu kính 10 cm. Thấu kính có tiêu cụ 15 cm

a, dựng ảnh của vật qua thấu kính.

b, xác định kích thước và vị trí của ảnh

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Bạn Của Thằng Hiệp
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V. Read the text then choose the best options to complete the statements. (1.0pt) 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 was driving at a very high speed when the accident happened. Some others began talking about the traffic accidents these days andblamed the increasing number of accidents on the roads for careless driving and drunk drivers. 1. What did the writer see yesterday? A. a fire B. an accident C. a fighting D. a crash 2. The boy was sent to the hospital by. A. a police 3. What partof his body was hurt?- His. B. a car C. an ambulance D. a taxi A. arm B. leg C. head D. shoulder 4. How was the driver driving when the accident happened?- Very.. A. slowly C. carefully B.well D. fast

2
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2 đáp án
21 giờ trước

Nước ta có bao nhiêu dân tộc?

1
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2 đáp án
21 giờ trước

Exercise 2: Giovanni lives in Italy and plans to visit England. Make all the changes and additions necessary to produce, from the following eight sets of words and phrases, eight sentences which together make the letter Giovanni wishes to send to the college where he hopes to study English. Dear Mr. Johnson, 1. A friend/mine/recently/return/England/advise me/write/you. 2. I/hope/come/England/next year/spend/some months/Cambridge. 3. Perhaps/recommend/suitable English family/me stay. 4. While/I/there/take/part – time course/improve/my English. 5. Be/part – time course/your college? 6. If/be/I/be/grateful/you send/application form. 7. Please/tell/much/fees/course/be. 8. I/like/know/date/course/begin. Your sincerely Giovanni Bianchi

2
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1 đáp án
21 giờ trước

Tìm lỗi sai, giải thích và sửa: The exercise corrects by the teacher every day.

3
3 lượt xem
2 đáp án
21 giờ trước

Choose the best answer.

I think you should buy _____  pack of mineral water instead. And you can also buy _____  snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______  cookies and soft candies.

326
326 lượt xem
1 đáp án
1 năm trước

Choose the best answer.

We should decorate our living room with _____ orange banner. We also need ________  ribbons, balloons, party hats and costume.

239
239 lượt xem
1 đáp án
1 năm trước

Choose the best answer.

I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

237
237 lượt xem
1 đáp án
1 năm trước

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