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    【题目】近100多年来，全球平均气温经历了冷—暖—冷—暖的波动，总体上气温呈上升趋势。全球气候变暖的主要原因是全球大气中二氧化碳的浓度明显增加。据此完成下列问题。

    【1】全球气候变暖可能对我国造成的影响是

    A．各地降水量普遍增大

    B．南方与北方温差变大

    C．水稻种植的北界北移

    D．有利于社会经济的发展

    【2】为减轻二氧化碳浓度增大而导致的气候变化的危害，各国政府应

    A．改变能源消费结构，提高天然气的使用比例

    B．遵守国际公约，控制和减少二氧化碳排放量

    C．减少煤炭的使用量，降低能源污染税费

    D．扩大耕地面积，培育新的农作物品种

    【答案】

    【1】C

    【2】B

    【解析】

    【1】全球气温升高后，我国西北干旱、半干旱地区因蒸发强烈，将会变得更加干旱；南北温差则不会变大，但1月0 ℃等温线将北移，水稻种植的北界也可能北移，会对社会经济发展产生影响，但是总体上是弊大于利。

    【2】煤炭和天然气均属于化石燃料，应该减少使用；为控制使用量，应该采用经济手段，提高能源污染税费；为了减少温室气体二氧化碳的排放量，各国政府应加强国际合作，提高能源利用效率，积极采用新能源。

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