题干
_______ in the leg made it impossible for him to walk home.
A：Injured
B：Having injured
C：To be injured
D：Being injured
答案(点此获取答案解析）
D
A：Injured
B：Having injured
C：To be injured
D：Being injured
的醋酸滴加到
的烧碱溶液中，下列结论正确的是
