通知行应在收到国内信用证或信用证修改书的次日起（）个营业日内通知受益人。A、3 B、

A： Good morning, madam!

B： Morning, sir!

A： You look worried. _____小题1:_____ 

B： My son got lost when I was talking with my friend in the supermarket. I’ve looked for him everywhere, but I can’t find him. What shall I do?

A： ___小题2:___ Tell us something about him, and we can help you.

B： Thank you, sir.

A： ________小题3:________

B： He’s six years old.

A： ________小题4:________

B： He is thin and tall with big eyes.

A： What is he wearing today?

B： He is wearing a white T-shirt and blue jeans.

A： _______小题5:_________

B： It is 0598-7860769 or 13507555539.

A： OK. We’ll call you as soon as we find him.

A．Thank you very much.

B．What’s the matter with you?

C．How old is he?

D．His name is TonyE. Don’t worry.

F. What does your son look like?

G. What’s your telephone number?

典型的流行性出血热病程可分为五期，它们是_______、__________、_________、_________、___________。

交叉免疫反应(cross immune reaction)

维修仪器机械部分时，不带手套会带来什么伤害？