根据句意和空缺处所给首字母写单词。
____ I have m________hobbies, such as swimming, rowing and hiking.
____ He said he would never f_________ the trip to Mount Fanjin.
____ We should do more exercise to keep h ________.
____ Tongren have developed r          into a modern city in the recent years.
____ My little sister is so young that she can't look after h________.

 某工人用如图所示的装置把一重为1200N的箱子从斜面底端匀速拉到顶端用时10秒，已知斜面长6m、高2m，此装置的机械效率为80%（滑轮重、绳重、滑轮与绳之间的摩擦均不计）．求：

苹果是大家喜爱的水果之一，平时被我们吃下去的那部分苹果属于哪一种组织？（  ）

默写古诗文名句，并写出相应的作者及篇名。

农村综合发展型生态工程的优点包括（　　）

①能量的多级利用　                      ②物质循环再生　

③废物资源化　                          ④生物相互依存，体现了整体性

⑤做到了生态、经济和社会效益的三者结合．