对层流净化特点的错误表述是A．可避免不同药物粉末交叉污染B．空调净化优于层流净化C．外界空气经过

--- Can I have a look at your passport？ --- __________ .

A.It is here

B.Here is it

C.Here you are

D.No, you can’t

A、A. I want to book a table

B、B. I’m looking for a shirt.

C、C. I’d like to check in.

D、D. May I have a look at your passport？

A、A. Give you.

B、B. Take it.

C、C. Here you are.

D、D. Let me check.

Your phone looks good!()？

Yes, it is a Smartphone.

A. Can I have a look

B. Where did you buy it？

C. What's it？

A、A. What can I do for you？

B、B. May I have your passport？

C、C. Can I help you？

D、D. Would you please put it on the belt？