9. Primary pupils ______ their classrooms for the countryside to spend their school week learning about rural life.A. scrapedB. trappedC. swappedD. wrapped

本题考查对形似单词词义的辨析。解题思路是先明确每个选项单词的含义，再结合句子语境来判断哪个单词能使句子语义通顺合理。

• A选项“scraped”：“scrape”常见释义为“刮；擦；擦伤” ，“scraped”是其过去式。例如：He scraped his knee when he fell.（他摔倒时擦伤了膝盖。）将其代入句子“Primary pupils scraped their classrooms for the countryside to spend their school week learning about rural life.”，句子意思变成小学生把教室刮到农村去学习农村生活，语义不通，所以A选项不符合。
• B选项“trapped”：“trap”意为“使陷入困境；困住” ，“trapped”是其过去式。比如：The animals were trapped in the burning building.（动物们被困在了燃烧的大楼里。）把“trapped”代入原句“Primary pupils trapped their classrooms for the countryside to spend their school week learning about rural life.”，表达小学生把教室困住到农村去学习，不符合逻辑，B选项不正确。
• C选项“swapped”：“swap”有“交换；调换”的意思，“swapped”是其过去式。“swap...for...”是固定搭配，表示“用……交换……”。在句子“Primary pupils swapped their classrooms for the countryside to spend their school week learning about rural life.”中，意思是小学生们用他们的教室交换去农村的机会，以便花一周时间学习农村生活，语义通顺合理，C选项正确。
• D选项“wrapped”：“wrap”意为“包裹；缠绕” ，“wrapped”是其过去式。例如：She wrapped the gift in a beautiful paper.（她用漂亮的纸把礼物包了起来。）将“wrapped”代入原句“Primary pupils wrapped their classrooms for the countryside to spend their school week learning about rural life.”，句子意思变成小学生把教室包裹到农村去学习，不符合常理，D选项不合适。