【单选题】—_____ does Helen _____ to school? —By bike. [ ]
【单选题】Listen to the conversation and choose the best answers for the questions。the conversation will be read twice. How does Joshua go to school in Japan?
A.
He goes to school by school bus.
B.
He goes to school by subway.
C.
He goes to school on foot.
【单选题】下列关于酵母的物质和能量代谢的说法错误的是( )
B.
氮源是酵母的一个重要营养物质,缺乏时酵母的代谢就会产生变化,产生一些还原性的气味
C.
葡萄浆果果皮表面的麦角甾醇和齐墩果酸,能够促进酵母的活动,被称为生存素,越是在AF后期困难的条件下,使用生存素的效果越好
D.
当基质中不再含有酵母菌所需营养物质时,部分酵母菌自溶形成高级醇和氨基酸等,对葡萄酒的质量构成不利影响
【单选题】Listen to the conversation and finish the following 4 questions. How does Joshua go to school in Japan? ( )
A.
He takes a school bus every morning.
B.
He rides the subway at 8:00 AM.
C.
He walks with a group of students.
D.
His parents take him to school.
【单选题】下列关于单细胞生物的说法错误的是 [ ]
【判断题】退货封箱时要把退货货品按照供应商、日期、货品状态分类整理装箱。
【单选题】下列关于单细胞生物的说法错误的是 [ ]