25. --School will soon be over. Can you recite the text now?

--I’m not sure, but I ________ it all this morning.

A．have read

B．was reading

C．read

D．had read

腺泡细胞癌发生率多少的排列顺序是（）

A.腮腺、颌下腺、小涎腺

B.腮腺、小涎腺、颌下腺

C.小涎腺、腮腺、颌下腺

D.小涎腺、颌下腺、腮腺

E.颌下腺、腮腺、小涎腺