题目

选出合适的答句。A. Yes, there are.B. Let’s go boating.C. Yes. There aren’t many people.D. Three.E. No, there isn’t.【1】The park is so quiet. （______）【2】How many people are there? （______）【3】Are there any tall buildings? （______）【4】Is there a river in the park? （______）【5】There are small boats. （______） 答案：【答案】【1】C【2】D【3】A【4】E【5】B【解析】略将一枚质地均匀的硬币连掷4次，出现“至少两次正面向上”的概率为 A．              B．               C．               D．