题干
_____by the running , they went on running after the thief.
A：Exhausting
B：Having exhausted
C：Exhausted
D：To exhaust
答案(点此获取答案解析）
C
A：Exhausting
B：Having exhausted
C：Exhausted
D：To exhaust
向量
，
满足
，
，
，若
，则实数
的值为（ ）