One day in Beijing, the temperature in the early morning is -1°C, and the temperature at noon is 3°C higher than that in the early morning. What is the temperature at noon?
一天北京的凌晨温度是-1℃，中午比凌晨温度上升了3℃，中午气温是+多少℃
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<result>2</result>