声音在日常生活中有广泛的应用，请你按下列要求各举一实例．利用声音来传递信息的有_ 发布时间：2017-05-02 22:01 │ 来源：www.tikuol.com 题型：填空题 问题： 声音在日常生活中有广泛的应用，请你按下列要求各举一实例．利用声音来传递信息的有______；利用声音来传递能量的有______．
题型：填空题 根据对话内容，从方框中的六个选项中选出五个合适的句子补全对话。A. How old is she? B. Is your father a teacher?C. What's your mother? D. Are there many students in her class?E. How many people are there in your family? F. Where does your father work?A: ___1____B: There are four - my mother, my father, my brother and I.A: ___2____B: No, he is a doctor.A: ____3___B: My mother is an English teacher in No. 8 Middle School.A: ____4___B: Yes, there are fifty students in her class.A: ____5___B: She's 34 years old. 查看答案
题型：填空题 黄河口是我国新增湿地最快的地区，近50年来平均每年造地405万亩，但近年来湿地增长速度减慢。黄河口湿地的成因是（）A.黄土高原水土流失B.渤海海区不断下沉C.海水的堆积作用D.河流的堆积作用 查看答案