【单选题】We tried to ______ our conversation to arguments relevant to the topic.
【简答题】We tried to p______ him, but he wouldn’t listen to us.
【单选题】油井混合物在保持接触的条件下逐渐降低压力;随着压力的降低,气体不断从液体中逸出,最后在常压容器中一次性将气液两相系统分离开来,称为 。
【单选题】We tried to restrict our conversation to arguments relevant to the topic.
【判断题】学习因素是人类行为形成和发展过程中比不可少的要素。