东北兴安岭山地是我国重要的林区,新修筑的铁路进入林区后,林区人民高兴的说:“火车一响,黄金万两”这说明( )
A:农业是经济发展的先行官
B:交通运输是经济发展的先行官
C:工业是经济发展的先行官
D:林业是经济发展的先行官
动物具有“学习能力”这有利于( )。
要想降低远距离输电线路电能的消耗必须( )
下列现象中,属于非条件反射的是( )
Come and see the India elephants and the new tigers from Amercia. The bears are waiting to meet you, and the monkeys from China are waiting to throw things to you. The lovely dogs from Australia are waiting to laugh at you. The giraffes from Brazil are waiting to look down on(俯瞰)you.
Tickets Open time
Children :over 12 $1.00 Except(除)Friday
Under12 Free 10:00a.m—3:00p.m
Grown-up:(成人)$2.00 9:00a.m—4:00p.m
Keep the zoo clean!
Don't touch , give good food or go near the animals!