小明的妈妈从菜市场买回一只老母鸡,让小明猜猜它的质量。你认为小明的猜测应接近下列哪一数值才是符合实际的( )
下图所示的化学实验基本操作中,错误的是
Suggested questions:
①How many class rules do you have?
②What must you do in the class?
③What mustn't you do in the class?