题目内容
Child mortality (死亡率) decreased due to improvements in medical care and greater attention to problems related to proper __________.
查看答案
搜索结果不匹配？点我反馈
更多问题
The disaster is already set to be the world’s worst for ground casualties ________ by a crashing aircraft.
To a large extent, computers have already ________ most aspects of our lives, from transportation and telecommunications to entertainment.
The growing __________ of computer hardware, operating systems and programs often makes computers more likely to break down.
Match the useful expressions
微信支付 
支付宝支付