作文写的是,demand for mining technology has dropped worldwide(好像是mining), 所以the profits and stock price of the B company 减少了, 发现renewable technology is booming, 而且它过去几年发展很好, 所以B公司应该devote future research to renewable energy,这样能够让B公司的profits and stock price safe
LZ举了三个错误 (1)demand减少不是导致profit减少的唯一原因,是management管理不好了让利润少了
(2)renewable tech过去好不代表以后就好
(3)转到renewable要有很多investment不能保证未来几年profit safe