单选题A survey was carried&nbsp

问题补充：

单选题AsurveywascarriedoutonthedeathrateofthosewhowereinfectedbySARS,________weresurprising.A.as resultsB.which resultsC.the results of itD.the results of which

答案：

D解析the results of which 等于whose results，是非限制性定语从句。