小华同学学习了细菌和真菌的知识后,设计了以下实验,探究酵母菌的发酵过程是否需要适宜的温度.具体实验设置如图,3个小时后,发现甲烧瓶上原来被挤瘪了的气球鼓了起来,乙烧瓶上的气球并没有鼓起来.分析实验,回答问题.
将多项式﹣6a3b2﹣3a2b2+12a2b3分解因式时,应提取的公因式是( )
“感动中国”2015年度人物广西都安高中校长﹣莫振高,用自己微薄的工资资助贫困学生,用休息时间去做动员、演讲,筹集教育善款……这一切,只为更多的瑶乡儿女能走出大山,圆贫困学子的大学梦。这反映出莫振高( )
①为了成就教育理想,完全舍弃了自己的利益 ②帮助贫困学生圆大学梦,不言代价与回报
③将学生视作自己的孩子,无私奉献默默付出 ④视资助贫困学生为己任,有强烈的社会责任感
下图是教育部公布的乡村学校从教30年教师荣誉徽标,请写出该徽标中除文字以外的构图要素,并说明图形寓意。要求语意简明,句子通顺,不超过80个字。
I'm Peter. There are four people in my family. They are my father, my mother, my grandfather and me. I'm twelve. My birthday is on 15th March. My parents are both doctors. They help people. Their birthdays are both in May. My grandfather is old. He is sixty-five. His birthday is on 9th June. He likes reading. I like reading too. I want to be a teacher in the future. I want to teach Chinese in a school.