【简答题】完形填空 Water is the 1 of all the things we eat and drink. Not many people understand this but 2 quite true. The human body can go without 3 for a long time. We've got many examples for this. Yet two 4 t...
【单选题】词汇与结构 Situation awareness (SA) involves being ______ of what is happening around you to understand how information, events, and your own actions will affect your goals and objectives.