A-A+ The average cost of natural gas is onethird le 2022-08-05 14:37:56 问答库 阅读 169 次 问题详情 The average cost of natural gas is onethird less than that of gasoline at the pump.A．YB．NC．NG 参考答案 正确答案：A解析：本句符合小标题advantages下第四自然段的内容。
