新访客数
参考答案：
该来源在选定时间段内带来的访问人数中在前6天从未访问过店铺的用户数。
根据短文内容及首字母提示完成单词，补全短文。
My name is Tim. Here is a p __1__ of my family. I have got a big family. My g __2__ are old
(年长的). My grandfather is 65 years old and my grandmother is 64 years old. I have got an a __3__.
She is my father's sister. I have got an uncle and he is my mother's b __4__. My parents have got two
children-a girl and a boy-my s __5__ and me.
振动的物体能产生声音，停止振动的物体不能产生声音，说明声音是由物体的______产生的．一切发声的物体都在______．正在发声的物体叫______．
