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van2004
2 năm trước
Cho 9,2g một kim loại A phản ứng với khí clo (dư) tạo thành 23,4g muối. Xác định tên kim loại A, biết A có hóa trị I.
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III. Read and complete the dialogue. Use the words in the box. busy / crossing / go/ light/ traffic/ rules Hoa: Hi, Mai. How are things? Mai: Hi, Hoa. I’m OK. How about you? What do you do in the evening? Hoa: I’m fine. In the evening, I (0) go to the school English club once a week. The rest of the week I usually stay home. I don’t like the city very much. Mai: Why don’t you like the city? Hoa: Before I moved here, I lived in a village in Thai Nguyen. There was a little (26) ___________. Mai: Yes, I know. Hoa: The roads here are (27) ___________ all day and I hate the noise. Mai: So do I. I live on a busy road and sometimes the noise wakes me up at night. Hoa: I hate (28) ___________ the roads most. There are bikes, motorbikes, taxi, cars, buses coming from every direction. They really scare me. Mai: There are some (29) ___________ about road safety. It is very important to obey these rules when you cross the road. For example, you must walk across the street at the zebra crossing and you must wait for the traffic (30) ___________ to turn green before you cross the street. You will get used to it soon, Hoa. Hoa: Thanks , Mai.

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