阅读下列短文，从每小题后所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该选项涂黑。
A
The Japanese government has launched a campaign encouraging people to go to bed and get up extra early in order to reduce household carbon dioxide emissions.
The Morning Challenge campaign, made public by the Environment Ministry, is based on the premise (前提) that exchanging late night electricity for an extra hour of morning sunlight could significantly cut the nation’s carbon footprint.
A typical family can reduce its carbon dioxide footprint by 85kg a year if everyone goes to bed and gets up one hour earlier, according to the campaign.
