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【题目】 树莓营养价值和药用价值高,被誉为“果中黄金”。俄罗斯、波兰、德国、匈牙利、美国、加拿大等国的年产量都在万吨以上。近年来,欧美国家树莓生产已处于停顿和萎缩状态,西欧国家更是退出了树莓的生产领域。河南封丘县自2002年引进树莓种植项目后规模不断扩大,现已成为我国树莓种植第一大县。据此完成下面小题。

1根据材料推断我国下列地区中野生树莓分布范围最小的可能是( )

A.海南地区B.西北地区

C.西南地区D.东北地区

2西欧国家退出树莓生产领域的主要自然原因可能是( )

A.多大风B.土壤贫瘠

C.光照不足,品质较差D.土地成本高

【答案】

1A

2C

【解析】

1

根据材料“俄罗斯、波兰、德国、匈牙利、美国、加拿大等国的年产量都在万吨以上”可以推断树莓适宜在较高纬度地区分布,海南地区与我国西北地区、西南地区、东北地区相比纬度低,因此野生树莓分布范围最小的可能是海南地区。所以本题正确答案为A

2

西欧国家冬季风力较大,夏季风力较小,不会对树莓的生长造成影响,故A错误。土壤的贫瘠可以通过一定的技术手段进行改造,所以土壤贫瘠不是西欧国家退出树莓生产领域的主要自然原因,故B错误。西欧是世界上最典型的温带海洋性气候分布区,全年温和湿润,光照不足,植物的光合作用差,昼夜温差小,导致树莓品质较差。所以光照不足,品质较差是西欧树莓退出生产领域的主要自然原因,故C正确。土地成本高不属于自然原因,故D错误。所以本题正确答案为C

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