论坛进行到现在时间已经不多了，下面我们请住房和城乡建设部科学技术委员会常务副主任、
O O O O O O O O O O O O O O O O O O O O B-government I-government I-government I-government I-government I-government I-government I-government I-government I-government I-government I-government I-government I-government I-government B-position I-position I-position I-position I-position O