Smoking is so harmful to personal health that it kills_____people each year than automobile accident

高中 专八 已帮助 人

Smoking is so harmful to personal health that it kills_____people each year than automobile accidents.
A.seven more timesB.seven times more
C.over seven timesD.seven times

热搜:medline数据库中to字段是表示非英文文献的原文题名