—How can I use this washing machine?
—Well, just refer to the .
A. explanations
B. expressions
C. introductions
D. directions
网友回答
A. explanations
B. expressions
C. introductions
(答案→)D. directions
解析：。directions 的意思是“使用说明”，空格前的 refer to 意为“查看”、“参考”。