本题考查哪个国家建造了世界上第一个利用天然气生产汽油的工厂。

A notable feature of the New Zealand electricity grid... In addition, partnerships between government and private interests have developed natural-gas reserves and constructed the world's first plant producing gasoline from natural gas.

新西兰电网的一个显著特征是...此外，政府和私人合作伙伴开发了天然气保护区，建造了世界上第一个利用天然气生产汽油的工厂。

故本题选C。