题目

The following table shows some results of a survey in which 800 Japanese school pupils were asked to give their impressions of their classroom teachers. The pupils’ impressions were found to differ depending on whether the teacher was new(with less than three years’ experience), middle-standing(ten to twenty years), or a veteran(twenty to thirty years). The numbers in the table show the percentage of the pupils who answered “very satisfied” or “extremely satisfied” for each question item.Question itemsNewMiddle-standingVeteran 1. Shows a sense ofhumor in class425670 2. Explains c酵母菌是常见的生物材料，有关其说法错误的是A．酵母菌在果醋发酵过程中起主要作用B．酵母菌进行有氧呼吸和无氧呼吸都能产生CO2C．果汁发酵后是否产生酒精，可以用重铬酸钾来检验D．不同培养条件下酵母菌种群数量最终都呈现“S”型增长