摘要：10．China should become a global leader in energy efficiency by 2050 nuclear power is likely to account for at least half of the country’s energy. A．on which B．that C．when D．for that 答案 C 解析 句意为:到2050年中国会在有效利用能源方面成为全球的领导人物.那时.核能至少可能占这个国家能源的一半.先行词在定语从句中作时间状语.所以用when来引导.

网址：http://m.1010jiajiao.com/timu3_id_3106466[举报]