1. (2022·鹿城模拟) 温州气候适宜，盛产各种酸甜爽口的水果，分析下表，酸性最强的水果是（ ）                                                                                                            

水果名称	茶山杨梅	塆里橘子	早香柚	岩头西瓜
pH	2.5~3.5	4.0~5.0	4.5~5.5	5.5~6.5