题目

假如你是李平。你的笔友Dave给你发了一封邮件。请根据邮件内容给 Dave回一封80词左右的邮件。 To: Li Ping From: Dave Hi Li Ping, How's it going? I heard you went on a trip last summer. Can you tell me something about your trip? Where did you go? What did you do there? And how did you feel about the trip? Is it a good place for me to go there? Dave To: Dave From: Li Ping Hi Dave, …… Li PingCH4的燃烧热为890 kJ·mol-1。下列热化学方程式正确的是A.CH4（g）+2O2(g)====CO2(g)+2H2O(l)；ΔH=+890 kJ·mol-1B.CH4+2O2====CO2+2H2O；ΔH=-890 kJ·mol-1C.CH4(g)+2O2(g)====CO2(g)+2H2O(l);ΔH=-890 kJ·mol-1D.CH4(g)+2O2(g)====CO2(g)+2H2O(g);ΔH=-890 kJ·mol-1