By 2020, China has committed to reduce its carbon dioxide emissions per unit of GDP by (( )( )( ) ) from 2005 levels and use non-fossil fuels for about 15 per cent of its energy.
A: 10 to 15 percent
B: 20 to 25 percent
C: 30 to 35 percent
D: 40 to 45 percent
发布时间:2024-06-09 01:04:28