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(20分)Write at least 60 words on the topic"Weekend or Not?"according to the information given.(阅读以下内...
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Nowadayssomestudentsseldomhelptheir1dohouseworkathome. Someparentelovetheirchildrentoo2anddon'tletthemworkathome.3theonehandtheythinkthattheirchildrenaretoobusy4theirstudiesandexpectthemtodowellintheirlessonsonly.Onthe5handtheythinktheirchildrendon'tknow6todothehousework. 7Ithinkstudentsshouldhelptheirparentsdohousewokeathome.Firstthatcandeveloptheirloveforwork.Nextthatcanhelpthem8theirparentsbetter.9andthemostimportantlythatcanhelpthemcultivate培养theirabilityto10inthefuture. 1.A.parents B.teacher C.doctor 2.A.many B.much C.little 3.A.At B.In C.On 4.A.with B.for C.by 5.A.another B.other C.others 6.A.how B.what C.when 7.A.And B.Or C.However 8.A.mind B.understand C.hate 9.A.Then B.Second C.Last 10.A.live B.study C.think.
多个生物兴趣小组围绕微生物发酵展开研究．请回答相关问题． 1兴趣小组一进行自制葡萄酒实验．在进行“产品”品尝时兴趣小组一的同学感到2号装置中的“产品”明显发酸其原因最可能是2号装置导致最终的产品中含有． 2兴趣小组二用液体培养基培养能产生胡萝卜素酵母菌品种．用纸层析法对培养液中获得的“产品”进行鉴定点样时除了点提取样外还要点样品当观察到时说明产品含有胡萝卜素． 3兴趣小组三进行自制苹果醋实验．自制过程需种的发酵菌是．某同学用新鲜苹果醋为实验材料分离纯化其中的发酵菌为了保证能获得单菌落要先对苹果醋． 4兴趣小组三的某同学计划统计苹果醋中某发酵菌的总数他选用10﹣410﹣510﹣6稀释液进行涂布每种稀释液都设置了3个培养皿．从对照实验的角度看还应设置的一组对照组是设置对照组的目的是．
heisseventyhecantalkwiththeyoungman. A.Althoughbut B.Although/ C.Becauseso D.Because/
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