When can a driver expect to encounter black ice?
- Only in the early hours of the morning.
- Correct answerWhen the temperature drops close to freezing.
- Black ice only occurs on motorways.
- Only late at night.
Explanation
Black ice is an almost invisible and thin coating of ice on the surface of the road. Sometimes it can look like a sheet of water or as if the road is wet.
Read in Chinese
司机何时可能遇到黑冰？
- 仅在清晨时分。
- 当温度接近冰点时。
- 黑冰只出现在高速公路上。
- 仅在深夜。
黑冰是一种几乎看不见的薄冰层，覆盖在道路表面。有时它看起来像一层水，或者像路面是湿的。
