噪声已经成为严重污染源,极大地阻碍了人们生活质量的提高.防噪已成为日常课题.“轻手轻脚过楼道”是在 ____减弱噪声,而用空心砖砌墙则是在 ____减弱噪声.
________that she is interested in children,I am sure teaching is the right job for her.
口语交际·综合性学习。