永州市2027年高考第一次模拟考试英语试题

29.What does paragraph 3 mainly talk about?A.The research background.B.The research process.C.The research significance.D.The research objective.30.What is the major argument against the study?A.El Ninos have stayed unchanged for centuries.B.Local data is more trustworthy than fossil data.C.Coral fossils cannot reflect ancient ocean conditions.D.The study mistakes ocean warming for El Nino change.31.What is the main purpose of the last paragraph?A.To sound an alarm.B.To offer a solution.C.To present a finding.D,To clarify a debate.