【題目】南極大陸是一個(gè)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(guó)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?jī)H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(shí)，太陽(yáng)總在地平線上，但太陽(yáng)高度小，陽(yáng)光嬌弱無(wú)力，根本無(wú)法驅(qū)散冰原上的寒氣。我國(guó)在南極的建立的三個(gè)科學(xué)考察站中，長(zhǎng)城站在南極圈以外，沒(méi)有極晝極夜現(xiàn)象；在北極圈內(nèi)，長(zhǎng)期居住的人口已接近300萬(wàn)．當(dāng)?shù)氐耐林用裰饕且蚣~特人和拉普人．南極洲則沒(méi)有國(guó)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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