农垦“清河泉”米业是一家集稻米加工、发电与供暖于一体的私营企业．请根据材料回答问题：
（1）该企业用稻壳发电，开发利用生物质能，请从资源和环境两个角度说明这样做的优点；
（2）该企业还建立了多个沼气池，沼气是 （填“可再生”或“不可再生”）能源，请写出其燃烧的化学方程式．
（1）即可节约化石燃料又可防止稻壳污染环境
（2）可再生；CH4+2O2
CO2+2H2O
题目分析：（1）利用稻壳发电即可节约化石燃料又可防止稻壳污染环境；故填：即可节约化石燃料又可防止稻壳污染环境；
（2）沼气是一种不可再生能源；沼气的主要成分是甲烷，甲烷燃烧生成水和二氧化碳，反应的化学方程式为：CH4+2O2CO2+2H2O．故填：可再生；CH4+2O2CO2+2H2O．
点评：化学来源于生产、生活，也服务于生产、生活，与生产、生活相关的化学知识，关乎我们的生存、健康和社会的发展，是中考热点之一．
第三节完形填空（共20小题；每小题1.5分，满分30分） 阅读下面短文，从短文后各题所给的四个选项（A、Ｂ、Ｃ和Ｄ）中，选出可以填入空白处的最佳选项，并在答题卡上将该选项涂黑。 Young Alfred Higgins, who worked in the store was putting on his coat, getting ready to go home. Mr. Carr, the little gray-haired man who owned the store looked 21_ at Alfred as he passed, and said in a very 22 voice, "Just one moment, Alfred." Mr. Carr spoke so quietly that he 23 Alfred. "Maybe, you'd be good enough to 24 a few things out of your pockets and 25 them here before you go." "What -- What things?” After a few moments, he put his hand into his 26 and took out the things he had stolen. "And maybe you can tell me how long this has been 27 on." said Mr. Carr. "This is the first time …."
Alfred thought his mother would come, rushing in, eyes 32 with anger. Alfred and Mr. Carr waited, but said nothing. At last they 33 someone at the closed door.  Alfred's mother came in with a friendly smile and put out her hand to Mr. Carr, said 34 , "I' m Mrs. Higgins, Alfred's mother."  Mr. Carr was 35 at the way she came in. She was very calm, quiet and friendly. "Is Alfred in 36 ?" she asked. "He has been taking things from the store.” She looked at her son and said 37 . "Is it so, Alfred?" "Yes." Higgins put out her hand and 38 Mr. Carr's arm with great gentleness, as if she knew just how he felt. She 39 her head away. Then she looked again at Mr. Carr 40 a pleasant smile and asked, "What do you want to do, Mr. Carr?"  "I was going to get a cop. That is what I should do -- call the police."  21．A．up B．down C．into D．back 22．A．confident B．soft C．sharp D．warm  23．A．frightened B．annoyed C．worried D．pleased 24．A．throw B．make C．take D．drop 25．A．desert B．show C．display D．leave 26．A．backpack B．pockets C．wallet D．counter 27．A．keeping B．carrying C．moving D．going 28．A．quick B．slow C．upset D．rude 29．A．strange B．happy C．kind D．warm 30．A．would B．must C．should D．need 31．A．police station B．home C．store D．club 32．A．exploding B．shining C．bursting D．burning 33．A．observed B．heard C．noticed D．found 34．A．seriously B．politely C．pleasantly D．bitterly 35．A．surprised B．dissatisfied C．excited D．disappointed 36．A．trouble B．danger C．debt D．prison 37．A．firmly B．loudly C．sadly D．eagerly 38．A．pushed B．grasped C．touched D．pulled 39．A．locked B．moved C．changed D．turned 40．A．at B．with C．for D．in |