该图为某大洋局部图，若AB线的纬度为30⁰度，则此海域位于（　）

图a是用来显示____，图b是用来测量____．

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    Come and see the Indian elephants and tigers from America. The koalas are waiting to meet you, and the monkeys from Thailand are waiting to throw things at you. The cute dogs from Australia are waiting to laugh at you, and the giraffes from Zambia are waiting to look down on you.
Tickets (票)                                           Time
Adult (成人): $ 6                                   June 1~ June 2
Children: Free                                       9:00 am.~ 7:00 pm.
Keep the park clean!
    Do not touch (触摸), give food or go near the animals!