The special weather in China mainly includes cold wave, plum rain, typhoon and sandstorm. Complete questions 22 ~ 23 with what you have learned. The above special weather mainly appears in winter.

Cold wave is the main disastrous weather that affects our country in winter half a year, which refers to a wide range of strong cold air activities. The southward cold wave caused a sharp drop in temperature, frost, strong wind and sometimes rain and snow in the passing area. Due to the scarcity of vegetation, more sandy soil and frequent cold wave and windy weather in the north and northwest of China, sandstorm weather is prone to occur in relatively dry spring.

Therefore, choose: B.