什么是水资源公报？
参考答案：
反映来水、蓄水、用水、水体污染情势及重要水事的综合性年度报告。
The new story is written in________easy English________even beginners can understand it. [ ]
A. such; that
B. so; that
C. such; as
D. too; that
什么是对要约内容的实质性变更？
