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hoangphuc273
2 năm trước
Dẫn 11,2 lít khí clo vào 500ml dung dịch chứa hỗn hợp NaBr 1M và NaI 1,2M, sau khi phản ứng xảy ra hoàn toàn đun nóng để cô cạn dug dịch thu được m gam chất rắn khan. Giá trị m là
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Bài 1 Chọn đáp án đúng 1. Harry Potter and the Goblet of Fire ______________ by J K Rowling A. was wrote B. was written C. were written D. was 2. Over a million dollars in cash __________________ from a bank in Los Angeles. A.has stolen B.have stolen C.has been stolen D.has steal 3. The gold ____________________ in a cave near the top of the mountain. A.was discover B.were done C.was done D.was discoverd 4. Those cars _____________ in Germany and the Czech Republic. A. are B.are make C. are made D.are making 5. Many shops _____________ by us at around nine in the morning. A.are opened B.opens C.open D. is opened 6. Your letter ______________ yesterday morning. A.were arrived B.were arrive C.was arrived D.was arrive 7. Vehicles parked in front of these gates will ________________ A.remove B.be removed C. been removed D. being removed 8. The dog ______ by me. A.will be washed B.washes C.washed D.will wash 9. The grass ______ by him yesterday A.is being cut B. are cut C.was cut D.was cutting 10. We _____ given flowers for our successfull plan. A. are B. is C. be D.being

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