第11题: [单项选择]The average wavelength of visible light is 2,000 times ______ the diameter of an atom. A. much as B. greater than C. as great D. more than that 参考答案:B 答案解析:[解析] 考查倍数的表达。题干中2000 times提示是对atom和light的比较,故可排除A、C。D中that是多余的,more than+名词已表示“多于……”。