单元检测卷(四) 选择题部分 第一部分 听力(共两节,满分30分) 第一节 (共5小题;每小题1.5分,满分7.5分) 听下面5段对话。每段对话后有一个小题,从题中所给的 A、B、C 三个选项中选出最佳选项,并标在试卷的相应位置。听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 1.Why is the air fresher than before? A.There are fewer cars in the city. B.There are fewer factories in the city. C.There is a green belt around the city. 2.What is the boy doing? A.Doing nothing. B.Climbing a tree. C.Cutting his name on a tree. 3.What do we know about Mr Harris? A.He lost his wallet. B.He wasn’t in his room. C.He stole