用鼻呼吸比用口呼吸好，这是因为（   ）

School violence ______ much attention of the whole society and people are calling on the government to make laws against it as early as possible.

回答问题(简答)。

    Lucy is my good friend. She is eleven years old. She is a student. She likes singing. She has a nail pet. Her name is Kitty. Look, Lucy's singing and the cat is dancing. Lucy wants to be a singer when she grows up.

    Lucy's mother is a nurse. She works in a hospital. She likes shopping. She usually buys a lot of beautiful clothes at weekends.