小题1:How many kinds of animals are talked about in the passage?

A．Four

B．Five

C．Six

D．Seven小题2:Now Mr. Smith is in the zoo with his two sons, one aged 14 and the other 10, how much are the tickets together?

A．$ 4.00

B．$ 2.00

C．$ 3.00

D．$ 1.00小题3:Which of the following is the visiting time?

A．8:30 a.m. Monday

B．9:30 a.m. Friday

C．3:00 p.m. Sunday

D．5:00 p.m. Tuesday小题4:Which of the following can we do in the zoo?

A．To give some food to the fish.

B．To touch the monkey on the head.

C．To throw things everywhere.

D．To take a few nice photos.

简述胰腺癌的病理。