题目

Confucius Institute is a popular institute abroad to promote(促进)Chinese culture and language.Recently, some students have done a survey among the foreign learners.It’s about their three favorite Chinese festivals.Here are the results.Spring FestivalDate:January 1st in Chinese lunar calendarActivities: They make dumplings in their teachers’ home.They write Chinese couplets(对联) and stick them on the sides of the door.They also get hongbao from their teachers.Hongbao means health, wealth and happiness in the coming year.Comment: Jeff: I like it because I have eaten the dumpling with t相等物质的量的CO和CO2相比较，则①它们所含的分子数目之比为1：11：1②它们所含的氧原子数目之比为1：21：2③它们所含的原子总数目之比为2：32：3④它们所含的C原子数目之比为1：11：1⑤它们所含的电子数目之比为7：117：11．