We could hear the frightened people's _____ in the accident.

A．noise

B．sound

C．shout

D．voices

引起细菌性食物中毒的最常见致病菌是

A．沙门菌
B．葡萄球菌
C．变形杆菌
D．副溶血性弧菌
E．致病性大肠杆菌