----How often do you the dictionary when you are doing reading?--Not very often. Only

问题补充：

----How often do you the dictionary when you are doing reading?

----Not very often. Only when I find it is necessary.

A. relate to

B. consult to

C. refer to

D. look to

答案：

A. relate to

B. consult to

(答案→)C. refer to

D. look to

解析：短语辨析， A.涉及，有关 B. 借鉴 C. 涉及，参考 D. 注意，指望。句意：当你阅读时，你总是参考词典吗？——不特别多。只有当我觉得有必要时。故选C。