II Here’s a paragraph that has both facts and opinions. Read and decide whether they are facts or opinions. (10 points, five for each)New York and other U.S. cities have begun using vehicles powered by natural gas[1]. This is a good idea[2], because vehicles that use natural gas do not pollute the air[3]. Pollution is the biggest problem facing cities right now[4]. Furthermore, natural gas is more cost-effective than regular gas [5]. All cities should use only vehicles powered by natural gas [6].1. Facts are ___A:[ 1] B:[2] C:[3] D:[4] E:[5] F:[6] 答案: [ 1]; [3] ; [5]