单选题 The investigation, ______ will soon be published, was made by John.
A. at which the results B. the results on which
C. whose results D. at whose results

【正确答案】 C
【答案解析】[解析] 本题测试定语从句的用法。从句中results的定语应该是心，所以此处应该用whose来引导。本句的意思是：“调查的结果将很快公布，这项调查是由约翰开展的。”