题目

Winter is dangerous because it’s so difficult to know what is going to happen and accidents take place so easily. Fog can be waiting to meet you over the top of a hill. Ice might be hiding under the melting(融化)snow, waiting ahead to send you off the road. The car coming to you may suddenly slip 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 every 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 把质量为2kg，温度为30℃的铝块加热到100℃，铝块吸收的热量是多少焦耳？[铝的比热容为℃]