— Excuse me, could you tell me ?— Certainly. In half an hour.
A：when the high speed train would arrive
B：when the high speed train will arrive
C：when would the high speed train arrive
D：when will the high speed train arrive
将函数y=sinx+π6x∈R图像上所有的点向左平行移动π6个单位长度，再把图像上各点的横坐标扩大到原来的2倍（纵坐标不变），则所得到的图像的解析式为（ ）
