题目

(2018·全国卷Ⅰ)Two of the authors of the review also made a study published in 2014 ________  showed a mere five to 10 minutes a day of running reduced the risk of heart disease and early deaths from all  causes. 答案:that/which 此处引导定语从句,修饰前面的先行词a study,从句中缺少主语,所以用that/which。下列说法错误的是(  )A.一次能源的储量是有限的,所以我们要合理地利用能源B.城市居民燃烧的煤气、液化气属于二次能源C.解决能源问题,关键在于提高能源的利用率D.开发和利用新能源,特别是核能和太阳能,是解决能源问题的主要出路
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