2018-2022英语周报八年级新目标第56期答案

参考范文】ar my fellow studentsdeal of food is wasted in the school cafeteria. There is alRecently, I oftn notice that a grea lot of food thrown away on the table or in the trash, which makes me feel sad. We have many goodreasons to save food. First of allsaving food means saving money. Second. it shows our respect to thepeople who grow and make it. Moreover, we must remember that many people in the world are stillgoing hungry. So I suggest we should limit the amount of food and don't buy too much food. In additionproper dieting is also good fohealthLi He

【答案】4.A5.D6.D【解析】4.由材料可知,该村耕地细碎化严重,耕地分散,且地块较小。结合贵州地理概况可知,该村位于山区,地形崎岖,导致耕地相对分散,地块小,A对;贵州地区降水较多,且降水多少与耕地细碎化无关,B错;交通不便和耕地分散无关,C错:技术落后会影响农业生产,如农产品单产低、品质较差,但不会造成耕地细碎化,D错。故选A5.根据材料可知,耕地细碎化的主要表现为每户拥有的耕地总面积小,且分散为相距较远的多个小块,不利于农业机械化发展,还会增加地块间耕作的往返时间,增加农业生产成本,大大降低生产效率,导致单产低,农业生产效益差,进而导致农民放弃耕作外出打工,造成耕地撂荒严重,B、C错误,D正确;因地块分散布局,质量不一,位置优、质量好的地块更有可能种植主粮等收成好的作物,而位置偏、质量差的耕地则可能会种植劳动力等生产要素投入少的杂粮等作物,因此农产品反而可能会更加多样,A错误。故选D6.因地块分散布局,质量不一,种植业生产效率低,收入较低,可适当进行土地流转合并,有利于实现大规模、机械化生产,提高农业生产效益,D正确。在高原山区就近开荒容易造成生态破坏,不符合可持续发展理念,A错误;精耕细作劳动力需求大,此处虽然人均耕地面但由于地块分散破碎,生产效率极低,不易实现精耕细作,B错误;商品农业往往布局在地广人稀、自然条件优越、农业科技发达、市场广阔和交通运输便利的地区,对市场、科技、信息、交通等现代化条件要求高,不适合偏远山区,C错误。故

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