题目

有一瓶混有酵母菌的葡萄糖培养液，当通入不同浓度的氧气时，其产生的C2H5OH和CO2的量如下表所示。通过对表中数据分析可得出的结论是 氧浓度（%）abcd 产生CO2的量9mol12.5mol15mol30mol 产生酒精的量9mol6.5mol6mol0mol A．a浓度时酵母菌有氧呼吸速率等于无氧呼吸速率 B．b浓度时酵母菌有氧呼吸速率大于无氧呼吸速率 C．c浓度时有50％的葡萄糖用于酵母菌的酒精发酵 D．d浓度时酵母菌只进行有氧呼吸未进行无氧呼吸三、词汇填空【1】Young people of all ______(年龄)like to go there to meet on Sundays.【2】The girl in red looks ______(苗条的).【3】These bikes are my ______(同班同学)，and those are theirs.【4】There are six ______(年级)in our school and they each(每个) have ten ______(班级).【5】Millie is a ______(矮)but lovely(可爱的)girl. We all like her.【6】The ______(baby) mothers are from the USA.【7】May is the ______(five) month of a year.【8】Whose bag is bigger，yours or ______(he)?【9】My little brother is only one ______(year) old.【10】______ (dance) is my favourite. I often do it for two hours after school.