题目

Here’s how you can take the taxi in Japan●From train station or airports(机场), go to the taxi stand and wait there.●In the street, look for a taxi that has a red light in the front window. It means the taxi has no passengers(乘客). ( If the light is green, the taxi has passengers. )●When you see an empty taxi, wave(挥动) your hand and call it.●The back door opens automatically(自动地), so stand back and wait until the door opens.●Get in the taxi and tell the driver where you want to go.●Before you get out of the taxi, pay it.●Wait until the door opens and get out of t抛物线y=-2x2经过平移到y=-2x2-4x-5，平移方法是（　　） A、向左平移1个单位，再向上平移3各单位B、向左平移1个单位，再向下平移3个单位C、向右平移1个单位，再向上平移3个单位D、向右平移1个单位，再向下平移3个单位