用移液管吸取50.00mL已除气的啤酒样品于100mL烧杯中，置于40℃恒温水浴中保温30min，并不时振摇和搅拌，以除去残余的二氧化碳。取出冷却至室温。将盛有样品的烧杯置于电磁搅拌器上，采用酸度计测定pH值，并用0.1034mol/L氢氧化钠标准溶液滴定至pH=9.0时，消耗氢氧化钠标准溶液9.21mL。求该啤酒的酸度。

Which of the following statements is NOT true of comedy according to the passage a. Present comedy is funnier than the past. b. People’s conception on comedy remains unchanged for decades. c. Contemporary comedy tends to be superficial. d. Old comedy was considered thought-provoking.