题干
The boys is impolite to others and this _________ hurts himself.
A：in tur
B：at tur
C：by tur
D：in tur
答案(点此获取答案解析）
A
A：in tur
B：at tur
C：by tur
D：in tur
。若飞镖恰好击中A点，则下列关系正确的是（ ）