Her question was so difficult that I could hardly make any of it at all.　A. explanationB.

问题补充：

Her question was so difficult that I could hardly make any of it at all.

A. explanation

B. meaning

C. sense

D. idea

答案：

A. explanation

B. meaning

(答案→)C. sense

D. idea

解析：词义辨析。 A．说明；解释B．意义；含义 C．感觉；观念 D．主义；思想。句意：她的问题是如此难以至于我根本几乎不能理解它的任何含义。故选C。