It seems that living green is easy and cheap. A small step can be rewarded with long-term

问题补充：

It seems that living green is easy and cheap. A small step can be rewarded with long-term benefits.

A. astonishingly

B. exactly

C. fortunately

D. hardly

答案：

(答案→)A. astonishingly

B. exactly

C. fortunately

D. hardly

解析：本题考查副词辨析。从“A small step makes a big difference.”中的“small”与“big”可以理解到“这是惊人的容易和做得到的”。exactly“确切地”，fortunately“幸运地”， astonishingly “惊人地，让人意外地，吃惊地”，hardly“几乎不”。