题目

排序，使其成为完整的对话。（______）Are there any tall buildings here?（______）The park is so quiet. （______）Look, there are some ducks and rabbits.（______）No, there aren’t.（______）Yes, they are so cute.（______）Yes, there aren’t many people. 答案：【答案】3 1 6 4 5 2 【解析】略请按要求将图中的电磁铁连入你设计的电路中（在方框内完成）． 要求：电路能改变电磁铁磁性的强弱；电路接通后能使小磁针静止在图示位置．