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选惨1:生物技术实[文]践】(12分每空2[章]分)1)细胞壁、细[来]胞膜、核糖体DNA[自]和RNA2)阻挡外[知]界空气中的杂菌进入[嘛],防止杂菌污染3)[答]酵母菌、醋酸菌、乳[案]酸菌(顺序错误不得[网]分)k4)蛋白酶和[文]脂肪酶等酶类色泽、[章]口味块形等试题分析[来]】()酵母菌醋酸菌[自]毛排等都具有细胞壁[知]细胞膜都含DNA和[嘛]RNA,细胞中都有[答]核糖体。(2发酵装[案]置的排气口通过一个[网]长而弯曲的胶管与瓶[文]身相连目的是阻挡外[章]界空气中的杂菌进人[来],(3)酵母菌、醋[自]酸菌、乳酸菌分别为[知]兼性厌氧菌、好氧菌[嘛]和厌氧菌。兼性厌氧[答]菌随氧气浓度增大无[案]氧呼吸逐渐受到抑制[网],有氧呼吸逐渐增强[文],导致总呼吸强度先[章]下降,后上升;好氧[来]菌随氧气浓度的增大[自],有氧呼吸逐渐增强[知];厌氧菌随氧气浓度[嘛]的增大无氧呼吸逐渐[答]被抑制(4)腐乳制[案]作利用了微生物(主[网]要是毛猫产生的蛋白[文]酶和脂肪酶,将豆腐[章]中的蛋白质和脂肪分[来]解成小分子物质。一[自]款腐乳的品质可从色[知]泽、口味块形等几方[嘛]面进行评价
第一节One possible versionDe[答]ar Sir/Madam[案]Knowing the Internati[网]onal Book Fair will be held nextweek in our city and that some volunteer[文]s are needed. I amwriting[章] to recommend[来] myselfThe[自] following[知] are my advantage[嘛]s. First of all, I speakEngl[答]ish so fluently that I have no difficult[案]y communica[网]tingwith foreigner[文]s. Secondly,[章] as a monitor, I always organizea[来]ll kinds of social activitie[自]s. More important[知]ly, I am a reg-stere[嘛]d volunteer[答], so I have gained rich experienc[案]e in volenteri[网]ng.I would appreciat[文]e it if I were given a chance. Lookingfo[章]rward to your early reply.You[来]rs.Li Hi第二节One possible versionLa[自]ter that evening, my son came up to me, his handbehin[知]d his back. "I have something[嘛] for you, Daddy, "hesaid. Beyond my expectati[答]on, he handed me a KenGriffe[案]y, Jr. card. He'd taken a pair of scissors and cutone copy of the Griffey off from the box. Now you don'thave to look for it anymore, "he said. Hearing what hesaid,I was shocked, and moved to tears. At once, the hugI gave him was the best price I ever paid for a cardI continued[网] collectin[文]g, and even ended up buying andsellin[章]g some old and valuable cards. However, there wasone card that I would never trade, which was a KenGriffe[来]y, Jr. card. Up to now, I still keep that Griffey, Jrcard, even if it has had the rough borders and the shabbycor[自]ners, and there is only a plain and simple board on theback. That is because that card. to me, is what baseball isall about. More important[知]ly, it's also what loveall about
