我国最长的湖底隧道—独墅湖隧道全长3460米，一辆汽车从隧道通过，这辆汽车从开始进入隧道到完全驶出隧道共用了200.5秒，而整辆汽车在隧道内的时间为199.5秒．则这辆汽车全长（      ）米，汽车的速度是（     ）米/秒．

Beijing is cold this time _________. You need _______ warm clothes if you go there.

A．of the year, to pack

B．of year, packing

C．of year, pack

D．of year, to pack