I manage to get the chance to interview Ma Yun. I am very excited.       

Ⅰ制备Fe₂O₃

【资料一】

①无水硫酸铜遇水变成蓝色的硫酸铜晶体．

②绿矾（FeSO₄•7H₂O）高温分解产生一种金属氧化物和几种气态非金属氧化物．

③SO₂是无色有窒息性臭味的有毒气体，能使品红溶液褪色．

甲同学用如下装置制备Fe₂O₃并验证绿矾受热分解的其他产物；

显微镜观察洋葱表皮细胞时，以下结构中我们无法观察到的是（  ）

    Pandas are famous animals. People like them a lot. The panda's face looks like a cat's, but its fat body and short tail(尾巴) are like a bear's. So people call this animal bear-cat. Scientists call it eat bear. The panda has a very mild temperament(性情温和). It is very loveable.

    The panda is an animal only living in China. The northeastern part of Sichuan Province and southern part of Gansu Province are its native home. Pandas like to climb trees. They live in the forests of high mountains eating bamboo and drinking spring water(泉水).

读图。