语法与词汇
17.In Disneyland, every year, some 800,000 plants are replaced because Disney refused to______signs asking his "guests" not to step on them.
【正确答案】
C
【答案解析】A项put down意为“着落，把某物放下，储藏，记下，禁止，压制或废除某事物”；B项put out意为“熄灭，关(灯)，出版，发布，伸出，生产”；C项：put up意为“搭起，建造，张贴，提高(价格等)，投宿”；D项put off意为“推迟，阻止，劝阻”。