Question

2. All of us know that water is extremely important not just for our        but also for our overall health and wellbeing and yet we choose not to drink enough of it.

   A. survival   B. system

   C. symptom   D. summary

Answer 1

2. A句意为："所有人都知道，水，不止是我们生存的极端重要的条件，还是让我们总体健康和安乐的因素，然而我们还是无意摄取足够的饮水量。"survival意思是"生存"。符合题意。