( )使发声罐发出的声音变轻.A、罐内装豆子 B、把棉花放入罐内 C、用布等物体包裹罐体 D、B和C

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• ( )使发声罐发出的声音变轻.A、罐内装豆子 B、把棉花放入罐内 C、用布等物体包裹罐体 D、B和C
• ( )使发声罐发出的声音变轻.A、罐内装豆子 B、把棉花放入罐内 C、用布等物体包裹罐体 D、B和C
• 因为这道题确实很多!选择正确答案,将其序号填入题前括号内.（12分）（ ）11.I usually get up ______ seven o’clock in the morning.A .at B.on C.of（ ）12.-- ______ is the coat?--Thirty-five yuan,please.A .How B.How much C.How old（ ）13.--Where are your glasses?-- I can’t find them,they ______ here just now.A .are B.was C.were（ ）14.The brown cat is as ______ as the black cat.A .fat B.fatter C.thinner（ ）15.-- Excuse me,can you tell me the way to the Garden Cinema?-- Let me see.You can ______ b
• 改变声音的方法,让声音变好的方法,有窍门的分享下