If I have time this summer, I'd like to ______ some of the less well-known parts of the country.A. expressB. exploreC. expandD. explain

此题考查动词辨析。句意：如果今年夏天我有时间，我想去探索一下这个国家一些不太知名的地区。express表达；explore探索；expand延伸；explain解释。根据some of the less well-known parts可知此处指的是探索这些地区。故选B。