【題目】南極大陸是一個冰雪世界，關(guān)于南極地區(qū)的敘述，正確的是( )。
A.為世界上最干燥的大陸
B.我國南極三大科考站都有極晝極夜現(xiàn)象
C.常住居民為黃色人種印第安人
D.距離南極洲最近的大洲為南美洲

【答案】A,D
【解析】南極洲的年平均降水量僅為55毫米，是地球上降水最少的大陸，而且降水幾乎全部是雪．極地酷寒，多狂風(fēng)，降水稀少．夏季出現(xiàn)極晝時，太陽總在地平線上，但太陽高度小，陽光嬌弱無力，根本無法驅(qū)散冰原上的寒氣。我國在南極的建立的三個科學(xué)考察站中，長城站在南極圈以外，沒有極晝極夜現(xiàn)象；在北極圈內(nèi)，長期居住的人口已接近300萬．當(dāng)?shù)氐耐林用裰饕且蚣~特人和拉普人．南極洲則沒有國家和定居人口；距離南極洲最近的大洲是南美洲。根據(jù)題意，故選：A、D．

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