—I’m sorry. There was too much traffic on the road.

—Don’t be late again. The meeting          for 15 minutes.

A．has begun

B．has stopped

C．has been on

D．has finished

牙关紧闭及角弓反张是何种细菌感染所致

A．破伤风梭菌
B．腊肠杆菌
C．炭疽杆菌
D．白喉杆菌
E．肉毒梭菌