听力材料：
Ladies and gentlemen, may I have your attention, please. On behalf of the Hospitality Department, first I welcome you to the City Zoo. Now I'd like to explain the program we've arranged for you here this afternoon.
There'll be three animal shows. The first show will begin at three o'clock in the marine arena. And you'll certainly be attracted by the dolphins' and the killer whales' interesting--and sometimes silly-attics. After that comes the second show. This is feeding the monkeys and apes at four o'clock, in the Primate Center. Please don't feed the animals with any sweets, biscuits, or fruit you may have brought with you, because these kinds of food can upset the animals' normal diet. You can, of course, help the staff in feeding the apes and monkeys with specially-prepared food, and in playing with the mon-keys，too. The last show will begin at 4:30 in the giant bird cage. Dr.Smith will be with you as your guide, he'll point out to you more than 300 species of birds from Central and South America. If you have any questions about these shows or other forthcoming events at the zoo, please ask the peo-ple at the information desk at the main entrance. They'll be very happy to help you. I hope you'll enjoy your visit. Thank you very much.
答案：
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