解决水资源空间分布不均的措施是[ ]
A．植树造林
B．建防洪大堤
C．跨流域调水
D．兴修水库
答案：C
Plastic bags won't be allowed to be used for free in the supermarkets. They can't ______ easily, which does
great harm to our environment.
A. break off
B. break in
C. break down
D. break out
旅游经营者未取得质量标准等级的，不得使用相关质量等级的称谓和标识。
