南极条约的签订，确定了南极洲的归属问题，激化了南极洲领土的争端。[ ]
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The news came out _____ the daughter of Pierre Robilland was to marry the little Irishman from up the country.
A．that
B．how
C．which
D．whether
空气中含量较多且能供给呼吸的气体是（ ）
A．氧气
B．氮气
C．二氧化碳
D．水蒸气
