Question

The foreigners have visited many places of interest ________ the west of China.

A. to
B. on
C. at
D. in

Answer 1

答案D
to, on, at与in后均可接表示地点的名词，但to常与go连用，表示“去某地”；on则表示“在某一固定（平面内）的拐角处”，如on the corner of the table; at则用于小地点的名词前，如at a bus stop; in则用于大地点或国名等词前，如in Beijing，in America。"