图表示我国某地季节性积雪融化完毕日期等值线及水系分布。读图回

图表示我国某地季节性积雪融化完毕日期等值线及水系分布。读图回答下列各题。

图中①、②、③、④四地积雪融化完毕日期最早的是 (    )

A.①             B.②      C.③             D.④

等值线在②处明显向北弯曲,其主要影响因素是(    )

A.纬度位置      B.海陆位置         C.地形      D.洋流

①、②、③、④四地中,年太阳辐射量最强的是(    )

A.①             B.②      C.③             D.④

答案

【小题1】B

【小题1】C

【小题1】D


解析:

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