一旦生态效率较社会服务增长更快，环境质量就一定开始好转（ ）Whenever eco-efficiency grows faster than social services, environmental quality must turn better

A.100
B.300
C.500
D.1000

A.0.025%
B.0.5%
C.0.05%
D.0.3%

A.571
B.-571
C.3315
D.-3315