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2.C【解析】本题考查复数的四则运算，考查运算求解能力.x=2×(-2i)+2i=-2i.

第一部分阅读第一节A【语篇导读】本文是一篇应用文。文章主要介绍了如何判断收获农作物的最佳时机。1.D【解析】细节理解题。根据“Root Crops'”部分中“Ready when golf-ball-sized to tennis-ball-sized”、“Ready as soon as they're big enough for your needs'”以及“Fruiting Vegetables”部分中“Ready when.theygrow appropriate,which depends on what you need""Ready when they reach about 4 inches (10 centime-ters）long”、“Ready as soon as they reach a desirablelength”可知，果实的大小会影响Root Crops和FruitingVegetables种类农作物的收获时间。故选D。2.A【解析】细节理解题。根据“Soft Fruits”部分中“Ready a week after turning black”、“Ready two or threedays after turning blue'”以及“Potatoes”部分中“Readyl0tol2 weeks after planting.”、“Ready20 weeks afterplanting.”可知，Soft Fruits和Potatoes类农作物对收获时间的要求很高。换而言之，对收获时间的不了解会造成这两类农作物的减产。故选A。3.B【解析】推理判断题。根据最后一段“Our popularVegetable Garden Planner can help you map out yourgarden design,space crops,know when to plant crops inyour exact location,and much more”可知，本文旨在帮助有求于规划花园设计、种植空间和种植位置的人，即园艺爱好者。故选B。