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miaotruclai
2 năm trước
Một người nhìn hòn sỏi nằm dưới đáy bể chứa nước () theo phương gần vuông góc với mặt nước yên tĩnh. Các ảnh của hòn sỏi khi độ cao của nước trong bể là d1 và d2 = 2d1 ở cách xa nhau 15 cm. Độ sâu của mỗi ảnh so với đáy bể lần lượt là
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Giúp mình với , chọn đáp án đúng nhé , khá dễ thôi Choose the correct alternative. ADAM: Hello, Mike. What (1) are you doing / do you do in my part of London? MIKE: Well, actually, (2) I’m looking / I look at these new flats (3) they’re building / they build down the road here. ADAM: Well, (4) they’re looking / they look quite cool, but (5) I’m thinking / I think they’re quite expensive. So (6) are you wanting / do you want to move to this area? MIKE: Yes. In fact, well, the news is that Mandy and I (7) are getting / get married. ADAM: Oh, wow! Congratulations. When (8) were you deciding / did you decide? MIKE: Only last week. It was while (9) we were staying / we stayed with her family in Scotland. Now (10) we try / we’re trying to find a suitable flat. ADAM: I hope you manage to buy one of these. MIKE: Oh, (11) we aren’t looking / we don’t look for one to buy. (12) We aren’t having / We don’t have enough money yet. (13) We’re wanting / We want to rent one. ADAM: Yes, of course. That’s what Anna and I (14) did / were doing at first. After that, my brother (15) was lending / lent us some money. That’s how (16) we were managing / we managed to buy ours. MIKE: You’re right. We must talk to our families before (17) we choose / we’re choosing a flat. ADAM: Yeah, my family (18) gave / were giving us a lot of help and advice. Now, what about a sandwich at my place? It’s just round the corner. MIKE: Oh yes, thanks. (19) I looked / I was looking for somewhere to eat when (20) I was bumping / I bumped into you.

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