The mistakes of fragmentation have already been made in London, with________results for cycling facilities.
伦敦已经犯了碎片化城市的错误，对自行车设施造成了灾难性的后果。disastrous灾难性的。 threatening 危险的。devastating毁灭性的。depressed沮丧的；萧条的。disastrous侧重不可避免和后果严重，devastating强调破坏，因此选A。