题目

废电池的锌皮(含铁单质)上常粘有ZnCl2、NH4Cl、MnO2及石蜡。工业上利用废旧锌皮制备水合硫酸锌(ZnSO4·nH2O)的流程如下：已知：常温下，金属离子开始沉淀及完全沉淀的pH如下表所示：金属离子开始沉淀的pH沉淀完全的pHFe2+7.59.0Zn2+6.58.0Fe3+2.23.5通常认为溶液中离子浓度≤10-5mol·L-1为沉淀完全。请回答下列问题： （1） “溶解”工序中除去废旧锌皮上物质的名称为。 （2） 滤渣I的主要成分为(填化学式)。“氧化”工序中发生反应的离子方程式为。 John suddenly jumped off the swing without even slowing down. He called out nervously, “Mom, where's Charlie? "He had just ___he hadn't seen his new puppy for over an hour.John looked around the garden, behind the bushes, and under the picnic table. No dog! His mother heard ___in his voice as he called her a second time. " Mom, I can't find Charlie!"She came outside __. "Let's look around the garden first. Don’t worry. I'm sure he's close by.Both son and mother were ___now, but still no Charlie. Their calls were not completely wasted, though. Joe, the next-door neighbor, and his two daughters Tania and Julie, immediately agreed to help them ___the lost dog.But even with five people now searching the town's streets, they had no luck. Charlie was still____Tania suggested they make posters with Charlie’s ___She had done this when her own cat was lost a year earlier, she told John, and the cat was found the next day.John agreed. When they got home, he made a poster with a photo of Charlie, Then John heard a___ and opened his bedroom door. It was Charlie. John was greeted with a big wet kiss Charlie had been____ in the bedroom this whole time, sleeping. John had never been so ___in his life!【1】A. decidedB. forgottenC. understoodD. realized【2】A. angerB. hopeC. fearD. warning【3】A. activelyB. quicklyC. carelesslyD. annoyingly【4】A. shoutingB. talkingC. fightingD. thinking【5】A. give upB. look forC. run afterD. take care of【6】A. missingB. asleepC. takeD. quiet【7】A. addressB. characterC. nameD. picture【8】A. messB. noiseC. voiceD. song【9】A. shutB. wokeC. tiedD. saved【10】A. afraidB. sillyC. happyD. proud