题目

Many experts hold the view _________ teacher development is _________ the key to better education lies. A . which; where B . that; in which C . that; where D . that; what 答案：C解决水资源季节变化大的重要的措施是（ ）A.跨流域调水 B.防治水污染C.兴修水库 D.节约用水