题目

关于经度、纬度变化的叙述，正确的是（    ） A、0°经线以东为西经                B、180°经线以东为东经 C、经度越大，离开本初子午线越远     D、纬度越高，离赤道越近 答案：       D When ________ to a high enough temperature, water can change into vapor． [　　] A． heating B． being heated C． heated D． having heated