为达到固定桥的自洁作用应做到：
C
暂无解析
简述处理积累和消费关系的基本原则。
When a person immigrates to another country, he should_ (conscious) adapt himself to the new environment
二次大战后资本进一步国际化的突出特点是()
He could not ________his tears on hearing that he was not admitted to the university
生产力是生产过程中人与()
