问题描述： helpful inventions and annoying inventions列举各五个 1个回答 分类：英语 2014-12-11 问题解答： 我来补答 helpful inventions:computer,internet,light bulb,cell phone and washing machine.annoying inventions:其实很难说俄.我查了一下,有alarm clock,pay toilet,underwear(哈哈哈）,automated telephone dialer(不是人工接的那种）.Vicky 展开全文阅读
