To live a low-carbon life , we must try to save _____ energy and produce ____ carbon .
| A．more , less | B．less , more | C．more , fewer | D．most , least |
To live a low-carbon life , we must try to save _____ energy and produce ____ carbon .
| A．more , less | B．less , more | C．more , fewer | D．most , least |
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