题目

In spring people like flying kites in the open air. ( 对划线部分提问)people like in the open air in spring? 答案：【1】What【2】do【3】doing将盛有凉牛奶的瓶子放在热水中如图所示，通过______方式改变牛奶的内能，图中乙是250g牛奶与热水的温度随时间变化的图象，则牛奶在加热过程中吸收的热量为______J.