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Tham khảo tài liệu 'level b lesson 30', ngoại ngữ, chứng chỉ a, b, c phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Level B lesson 30 1. In the preparation of fibrous material for production uses stiff woody fibers from plants.fibers from animal sources. B u A. the most heat the u B. need more heat than u C. than more heat needed u D. need the more heat than 2. Partnership is an association of two or more individuals who.together to develop a business. C u A. worked u B. they work u C. work u D. working 3. Chosen as the nation s capital at the end of the American Civil War .a city of over a million people. A u A. Washington D.C. is now u B. for Washington D.C. u C. to Washington D.C. u D. now in Washington D.C. 4. Within an area of only 100 miles Death Valley sinks to 282 feet below sea level while Mount Whitney.to a height of 14 494 feet. D u A. soaring u B. soar u C. soared u D. .