Many people attend various public lectures, chiefly ______ themselves familiar with the latest development of different fields.

My train arrive in New York at eight o'clock tonight. The plane I would like to take from there ______by then.

2014年8月3日16时30分云南省昭通市鲁甸县发生6.5级地震，造成了房屋倒塌，人员伤亡，桥梁、公路、水利水电工程等设施的破坏，此统称为地震________。之后，又引发了山地滑坡、泥石流等，次统称为地震________。

职权统一是管理的一大原则，而现实中“越权”现象确实屡屡出现，越权是指去做超越职责范围的事物，这会降低管理效率、影响组织发展。______所描述的现象不属于越权行为。

________evidence that language acquiring ability must be stimulated.