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.
选项:
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 01:03:54