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GRE填空题及答案(汇总)

　　The concert halls suspended ceiling is two-inch-thick plaster that reflects low-frequency sound energy; similarly, all wall surfaces are angled and shaped to ___ sound from the stage throughout the audience area.

　　A. diffuse

　　B. amplify

　　C. spread

　　D. dampen

　　E. eclipse

　　F. deaden

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