Sam likes trekking the jungle, because he thinks it's exciting.
A. over
B. under
C. across
D. through
网友回答
A. over
B. under
C. across
(答案→)D. through
解析：考查介词辨析。over “在……上面”； under “在……下面”；across “穿过”,指的是从物体表面穿过；through “穿过”,指的是从立体空间穿过。jungle 意为“丛林”,故用介词through。 trek through the jungle “穿越丛林”。