能准确反映代谢性酸碱平衡的指标是A．PaCO2B．PaO2C．SBD．动脉血pH值E．AB

— Jane, I’m coming to say good-bye. I’m leaving tomorrow. — _______

A、I’m sorry.

B、Oh, no. Why？

C、Go slowly.

D、Why soon？ Can’t you stay a few days longer？

Mike：Excuse me．Are you a visitor or a student？

Jane：？1’m sorry I know only a little English．

Mike：Are you traveling here？

Jane：Yes，I‘m traveling here．

A.Would you please say the number again

B.I"d say that I"m not a，traveler

C.Pardon me

D.What do you mean

A.Would you please say the number again

B.I"d say that I"m not a，traveler

C.Pardon me

D.What do you mean

Speaker A: Sam， I‘ m calling to say goodbye to you， as I‘ m leaving this afternoon.

Speaker B :__________

A.Look after yourself， and thank you for your calling.

B.Pay attention to your schedule. Don" t be late for the train.

C.Thank you and don" t forget to keep in touch with me.

D.Take care and I wish you a pleasant journey.

—I think I'm coming down with a bad cold. —______.

A．Oh, don't say that again

B．Then you'd better see a doctor

C．Well, I suggest you have a rest

D．But you should go up a bit

Tomorrow I'm leaving for New York and I'll stay there for______.

A．sometime

B．some time

C．sometimes

D．some times

A: John, you didn't show up at my birthday party last night. B: ______.

A．I'm sorry, Jane, but I already sent you a present.

B．I'm sorry, Jane, but I don't like to be shown.

C．I'm sorry, Jane, but there was a serious accident on the way.

D．I'm sorry, Jane, but I don't like shows.

— Good morning, sir. May I help you？ —__________.

A、No, I’m leaving soon

B、I don’t mind

C、Thanks. I’m just having a look

D、It’s all right

-Marilyn, I’m afraid I have to be leaving now.

- __________.

A That sounds wonderful.

B Oh, so early？

C Not at all.

D Good luck!