– Tony, do you know Mike’s phone number? 

-- No, but I can _____ in my phone book.

A．look it up

B．look it out

C．look for it

D．look up it

铁缺乏时，供给骨髓造血用的铁是下列哪项提供的

A．血红蛋白铁

B．肌红蛋白铁

C．易变池铁

D．贮存铁

E．运转中的铁