---why do people hate flies?---because they_____diseases

问题描述:

---why do people hate flies?---because they_____diseases
a throw
b spread
c permit
d infect
选什麽、、还有解释、、谢谢

C spread 有传播的意思 throw 是抛掉的意思 permit 是允许的意思 infect 是感染的意思 苍蝇只是携带病原体儿自身不具有致病力