Yesterday my sister and I went____(buy)something for her birthday．She didn't really know what____(get)but she seemed____(like)the idea of a pet，so we went to the nearest pet shop．She started ____(look)around at an the animals．The man in the shop advised her ____(choose)the rabbits，but when she saw some puppies(小狗) ____(play)in the box，she said she would like____(have)one of them．I didn't know if we had enough money____(buy)one and I hoped my mother would want us____(have)a dog in the house，but my sister promised____(look after)it well and we had enough money，so we bought a little brown dog.

下列算式中，结果等于a⁶的是（  ）

0°经线以西称____ ，用　____ 　表示； 0°经线以东称____，用____ 表示．

已知集合$A=\left\{-1,0,1,2\right\}$，$B=\left\{x|x\ge 1\right\}$，则$A\cap B=$(  )