第31题: [单项选择]Various types of packaging come into existence to ______ the market position of products. A. amplify B. foster C. enhance D. magnify 参考答案:C 答案解析:[解析] 语义连贯题。分析题干,所填词以the market position为宾语,表述了包装与产品的市场地位之间的关系,适合的选项为[C]enhance“提高,增强”,意为“to improve