37【答案】(15分,除特殊说明外,每空2分)(1)乳酸(杆)菌;不需要(2)乳酸;空间结构3)抗生素能够杀死(或抑制)乳酸菌的生长,〔导致无法发酵成功)(4)思路一:分别取适量的发酵前后的鲜奶和酸奶,比较前后的亚硝酸盐的含量(3分,自变量2分,因变量1分)明显增加思路二:分别取适量酸奶和鲜奶,测定其中的亚硝酸盐的含量;(3分自变量2分,因变量1分)酸奶中的亚硝酸盐含量高于鲜奶的思路三:测定鲜奶中的亚硝酸盐的含量,与酸奶中的亚硝酸盐含量比较;(3分前半句2分,后半句1分)鲜奶中的亚硝酸盐的含量为零哦者低于1mgkg其他设计按自变量2分,因变量1分酌情给分,如对鲜奶进行灭菌处理后分两组,组添加适量乳酸菌,一组添加等量蒸馏水,在无菌温度适宜条件下培养一段时间,测定两组的亚硝酸盐含量,也可3分

第二节读后续写【写作指导】◆文章主线已知线索:Surfer被送到了“我”家经营的动物收养所一父亲在宠物收养网站上刊登 Surfer的信息— Parker一家要领养 Surfer-7oey是一只没有人愿意领养的狗狗—7oey被以前的主人伤害过—刚来到动物收养所时,Zoey对“我们”充满敌意—渐渐地 Zooey和“我们”建立了信任—7y喜欢和 Surfer待在一起Parker一家来了可续写线索Surfer和Zooe依依不舍?“我们”和 Parker一家不忍看它们离别?父亲把Zoy的故事讲给 Parker一家听? Parker一家收养 Zooey?两只狗狗和“我们”都非常开心?◆续写词汇已给提示词汇:Surfer, home, a loving family, responsible, Zooey,adopt, treated, barked, trusted, the Parkers续写可能用到的词汇:agreementOne possible versionParagraph 1When Surfer got tired, he wandered back to ZooLooey still wagged its tail lazily and sniffed around Surferwhile Surfer curled around Zooey, without any intention toeave with the Parkers. When it was time to leave Dadcalled Surfer gently and guided him to the Parkers'carHowever, Surfer followed Dad unwillingly, turning around togaze at Zooey. Meanwhile, Zooey rushed towards Surferbarking in sadness as if they would never meet again. TheParkers and our family all are unwilling to see this sceneDad told Zooey's story to Mr. and Mrs. Parker.Paragraph 2Mr. and Mrs. Parker asked if they could adopt ZooeyAre you sure?Dad asked. "Absolutely ! Mr Parkernodded. "She has been through a lot. I'd hate to separateher from her best friend. Hearing this, the children bothcracked into smiles. because they knew this was the bestending for the two dogs. Zd Surfer suddenly rushed toeach other and curled together as if they understood theagreement, with tails wagging crazily to show theirappSeeing the Parkers and two dogswerethrilled to find a loving family for them

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