阅读图文材料，回答下列问题。

材料一 我国贵州省“大窝凼”洼地由岩溶漏斗、落水洞、天坑以及溶洞组成，是隐藏在贵州群山深处的一片天然洼地。其在2016年9月建成了世界最大射电望远镜“FAST”，就是利用了贵州独特的喀斯特地形条件和极端安静免受电磁波干扰的环境。

材料二 左图 “FAST建成后的效果图”，右图为“某地地质剖面图”。

具有降低血糖的激素是（   ）

下列事实中，可以体现细胞全能性的是（　　）

①利用胡萝卜韧皮部的细胞培育出植株

②转入抗虫基因的棉花叶肉细胞培育出植株

③番茄体细胞与马铃薯体细胞融合后培育出植株

④利用小麦花药离体培育出单倍体植株

⑤蜜蜂未受精的卵发育成雄峰．

    John gets up early from Monday to Saturday, because he must go to school before 7:30 on weekdays(工作日) and go to Drawing Club at 8:00 on Saturday mornings. He usually goes to the bookshop on Saturday afternoon, and after dinner he watches TV until(直到) midnight(午夜).

    He doesn't get up early on Sundays. John's parents both work on Sundays. John always watches TV after he gets up. Then he usually goes to KFC to have a hamburger and some juice for lunch. After that, he goes back home and starts to play computer games until his parents come back. He does his homework after dinner. He usually has lots of weekend homework, so he must spend three hours on it. He usually goes to bed at about 11:00 p.m. on Sundays. He often complains(抱怨) he has too much homework to do.

根据短文内容，选择最佳答案。