W: Good morning, sir. Can I help you? 

M: Yes, please. I w______(1) some pencils.

W: We have ten kinds of pencils . What color would you l_______(2)?

M: Red, yellow and black.

W: How m______(3) pencils would you like?

M: Five red ones, three yellow ones, five black ones.

W: How much are t_________(4)?

M: 9 dollars.

W: OK. I’ll t______ (5)them.

M: Anything else? W: No. Here is the money. Bye!

肺灌注显像剂注入颗粒数宜为（）

A.1万-10万

B.10万～15万

C.20万左右

D.70万～l20万

E.>120万