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LÀM VÀ GIẢI THÍCH 15For years, tablets have enriched our lives at work and at home, allowing us to stay ____ and access information with ease. A. connecting ​B. connected ​C. connect ​D. connection 16. Viet Nam has abundant mineral water sources, ____ throughout the country. A. be found ​B. finding ​C. find​D. found 17. Some private companies in China try to avoid employing women of child bearing ____ and sometimes sack them once they are going to have a baby. A. years ​B. time ​C. old​D. age 18. The ____ mangrove forest is home to a variety of wildlife. A. flooded ​B. flood​C. flooding ​D. floods 19. Saudi Arabia is the last country to allow women to vote, and this is a first step in the long ____ of the gender equality. A. struggle ​B. way​C. distance​D. direction 20. In addition, Hawaii is home to some magnificent botanical gardens, opportunities for animal ____ education, and cultural engagement. A. conservationist​B. conserve ​C. conservation​D. conservational 21. Computer games ____ encourage players to move up levels and earn high scores may help develop mathematical skills. A. they ​B. those​C. which​D. whose 22. All forms of discrimination against all women and girls ____ immediately everywhere. A. must be allowed​B. must be followed ​C. must be taken away​D. must be ended 23. A major issue for teachers ____ allow students to use their own devices is how to provide online access to such devices. A. who ​B. those ​C. they​D. ones 24. A common reason that someone ____ more for similar work is because of his or her experience or “length of service”. A. can be paid​B. must be paid ​C. may be paid​D. should not be paid 25. The examination papers ____ by machine. The students ____ of their results next week. A. should be scored - are told ​B. will score - will be said C. can be scored - can be told ​D. are scored - will be informed 26. In New York State, you can sleep green by staying at one of the hotels, committing to ____ practices. A. environmentally friendly ​B. friendly environmentally C. environment friendly​D. environmental friendly 27. When is that letter ____? A. be sent​B. to sent ​C. going to be sent​D. going to send 28. True gender equality ____ when both men and women reach a balance between work and family. A. can be achieved ​B. should achieve​C. can achieve ​D. should be achieved 29. Which of the following is ____ title for the passage? A. better ​B. best ​C. the best ​D. good 30. Enrich your time in Hawaii by learning about the ____ of its islands. A. floral and animals ​B. sea and sun​C. flora and fauna ​D. lawns and grass 31. At the end of the 19th century, Binet developed a test for measuring intelligence ____ served as the basic modern IQ tests. A. and ​B. which has ​C. has ​D. it has 32. Women with high qualifications ____ to managers. A. most move​B. most be moved​C. must promote ​D. must be promoted 33. The girl and flowers ____ he painted were very lively. A. that ​B. whose​C. who ​D. which 34. Reducing gender ____ improves productivity and economic growth of a nation. A. possibility ​B. rights ​C. equality ​D. inequality 35. The speed of light is ____ the speed of sound. A. the fastest​B. as fast ​C. faster​D. much faster than

Một cửa hàng bán 500 kg gạo , cửa hàng đã bán hết 250 kg gạo . Hỏi cửa hàng còn lại bao nhiêu kg gạo