第28题: [单项选择]Vitamins do not provide energy, nor do they construct or build any part of the body. They are needed for ______ foods into energy and body maintenance. A. transforming B. transferring C. altering D. shifting 参考答案:A 答案解析:本题考查动词辨析。transform“(生物、化学、数学、电力学等方面)转变,转化,使改变性质”;transfer“转移,转换(车船等)”;alter“改变”;shift“变动(位置或地方)”。把食物