Not all of these fairies are friendly, people love characters that appear in Disney films, but in some

folktales they are        and cause much human suffering. [ ]

A. powerful

B. cruel

C. frightened

D. extraordinary

食品中检出（），表示食品受到人和动物的粪便污染。

A.布氏杆菌

B.伤寒杆菌

C.大肠杆菌

D.副溶血性弧菌