如图是植物细胞和动物细胞的结构示意图，据图回答问题：

    I have eight teachers now and I love them. My favorite teacher is my English teacher, Sophia.

    Sophia is an English woman. She loves Chongqing. She thinks Chongqing is great. She loves Chongqing food.她早餐吃什么？Bread and milk? No. She only has noodles (面条)。 Hot pot(火锅)is her favorite . She always eats it in the evening on Friday .Sophia has a daughter and a son. They are eight.他们去相同的学校。 They like hot pot, too. They are in Chongqing,too.

    My classmates like to play English games with Sophia. When we have questions, we like to ask her for help.

课外阅读

风儿告诉我

     “你不想有我的力量吗?”飓风问微风。“你看,当我起驾的时候,他们地面上整个海岸都挂上台风信号来向我致敬,我折断一条船的桅杆就像你托起一根羽毛那样容易。我的翅膀这么一扫,海边就到处是被粉碎的船板。所有的国家都在我的面前畏缩着。难道你不想有我的威力吗?”

    微风没有回答,只是在天空中轻轻起舞。这时,所有的河流、湖泊、森林、田野,所有的走兽和飞鸟,所有的人们,都为它的来临而高兴。鲜花盛开,白云浮动,风帆高举,到处是健康和欢愉。绿叶、鲜花、温暖、光明,这就是微风给飓风的唯一回答。

    很多很多时候,最重要的并不是威力。温和与礼貌也是一种财富,它像阳光一样受到欢迎。它到处携带着欢乐,而它绝对不妒忌,更不骄傲,它只是把美好的祝福温柔地送给每一个人。   

描述下列实验现象：

①镁带在空气里燃烧____。

②铁丝在氧气里燃烧____。

③氢气还原氧化铜____。