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thaotrang6996
2 năm trước
Câu 18 : Cho tập hợp phần tử sau M={1975;1977;1979;...2011} a) tập hợp trên còn mấy phần tử b) tập hợp H={1975;1976} có phải là tập hợp con của tập hợp M không? Vì sao?
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Read the article and then decide whether the statements are true (T) or (F). After school Kien usually goes swimming. He goes to the swimming pool five times a week. His swimming pool is very good. The pool is 25 metres long and has six lanes. More than a thousand children have swimming lessons there every month. His swimming instructor is experienced and friendly, but she is also strict. She Lessons last 45 minutes, but he usually trains for an hour and a half. During the lesson he swims about two kilometers. His favourite swimming styles are crawl an backstroke. He practices a lot to improve his swimming skills. He wants to achieve good results. Last month he participated in a swimming competition. Ten swimmers from three schools took part in the competition. He won first prize. Swimming is his favourite sport. Swimming is interesting and pleasant, and it helps him to keep fit. True or False? Kien goes to home after school. He practices swimming five times a month. His swimming instructor is so hard. He swims about five kilometers during the lesson. The best friend won first prize in the swimming competition.

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