[单项选择]Some Chinese kids eat ______ as they actually need every day. A. twice as much protein B. twice protein as much twice C. twice protein as much D. protein as twice much
参考答案:A 答案解析:twice (以及所有表示倍数的词)位于as...as... 结构前面,被比较的对象much protein 应位于中间。根据题中的as 可知此处应用同级比较的形式表达倍数的概念,因此A为正确答案。