Many mass tourism resort destinations suffer from ___, giving th

Many mass tourism resort destinations suffer from ___, giving the landscape an unclean and untidy appearance.（ )
A、congestion
B、litter
C、theft
D、crime
【正确答案】：B
【题目解析】：B. litter（垃圾）：这是一个非常直接和明显的选项。旅游胜地如果受到垃圾问题的困扰，那么这些垃圾无疑会使景观看起来不干净、不整洁。