致病性细菌、病毒以及某些毒素对农产品质量安全产生的危害属于()污染。A.物理性 B.

A: Hello.
B: Good morning! This is Mary. Is that Lisa?
A: Sorry, she isn't in now. Can I give her a message?
B: Oh, good. Please ask her to call me at 9:00 in the morning.
A: Ok. Does she have your telephone number?
B: No, she doesn't.
A: Please tell me your telephone number.
B: Sure, my telephone number is 56983582.
A: Ok, I'll give her the message.
B: Thank you very much.A: You're welcome.