第二节：任务型阅读（共3小题，每小题2分，满分6分）
阅读下列材料，然后按要求完成材料后面的三个小题。
Driving Rules in Winter
Winter is dangerous because it’s so difficult to know what is going to happen and accidents take place so easily. Fog(雾) can be waiting to meet you over the top of a hill. Ice might be hiding under the melting snow, waiting ahead to send you off the road. The car coming to you may suddenly slip(滑) across the road.
Rule Number One for driving on icy roads is to drive smoothly(平稳地). Sudden movements can make a car very difficult to control. So very time you either start or stop your car, increase or reduce your speed, you must be as gentle and slow as possible. Suppose you are driving with full cup of hot coffee on the seat next to you. Drive so that you wouldn’t spill(溅) it.
Rule Number Two is to pay attention to what might happen. The more ice there is, the further down the road you have to look. Test how long it takes to gently stop your car. Remember that you may be driving more quickly than you think. Generally, allow twice of your usual stopping distance when the road is wet, three times this distance on snow and even more on ice. Try to stay in control of your car at all times and you will not get into trouble.
请根据阅读材料补全以下语句信息。（48-49题，每空一词，共4分）
48. Winter is dangerous for drivers because there may be ____ or ____ on the road.
49. In order to drive smoothly, you must avoid _____ ______.
根据阅读材料的描述用英语完成以下任务：（共2分）
50. The passage mainly tells us ______________________________________.