单选题 Heat energy ______ from the sun in a direct way is the most widely used energy today.
A. come B. to come C. coming D. having come
A. come B. to come C. coming D. having come

【正确答案】 C

【答案解析】[考点] 非谓语动词。现在分词的完成式，一般作状语，排除D。动词原形不作定语，排除A；不定式作定语常表示将要发生的动作，排除B；现在分词作定语相当于一个定语从句：which comes from...，故选C。