Driving through snowstorm on icy roads for long distances is a most nerve-racking experience. It is a paradox that the snow，coming __1__ gently，blowing gleefully in a high wind，all the while __2__ down a treacherous carpet，freezes the windows，__3__ the view. The might of automated man is__4__ . The horses，the powerful electrical systems，the deep-tread tires，all go __5__ nothing. One minute the road feels __6__，and the next the driver is sliding over it，light as a__7__，in a panic，wondering what the heavy trailer trucks coming up__8__the rear are going to do. The trucks are like __9__ when you have to pass them，not at sixty or seventy __10__ you do when the road is dry，but at twenty-five and thirty. __11__ their engines sound unnaturally loud. Snow，slush and__12__ of ice spray from beneath the wheels，obscure the windshield，and rattle __13__your car. Beneath the wheels there is plenty of __14__ for you to slide and get mashed to a pulp. Inch __15__ inch you move up，past the rear wheels，the center wheels，the cab，the front wheels，all__16__too slowly by. Straight ahead you continue，__17__ to cut over sharply would send you into a slip，__18__in front of the vehicle. At last，there is__19__enough，and you creep back over，in front of the truck now，but__20__the sound of its engine still thundering in your ears.