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【单选题】
在25亿-6亿年前，地球大气中的氧气含量逐渐增多，这些氧气主要来自
A.
海洋中的藻类释放的氧气
B.
水蒸气分解形成
C.
火山爆发时喷发出的气体形成
D.
生物呼吸作用产生
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【单选题】C++语言支持的()可以按其实现的时机分为编译时多态和运行时多态两类。
A.
多态性
B.
杀伤性
C.
韩国国内
D.
认定
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【单选题】After living with his grandparents in the countryside for ten years, the boy returned to the big city ____ his parents worked.
A.
which
B.
where
C.
that
D.
when
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【单选题】( )是指影响国家安全或战争全局的客观情况和条件
A.
国际环境
B.
地理环境
C.
战略环境
D.
国内环境
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【单选题】________是影响国家安全或战争全局的客观情况和条件。
A.
战略环境
B.
战略方针
C.
战略目的
D.
战略力量
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【单选题】After ten years in the shoe trade, Colin's contacts are in the retail sector. (primarily)
A.
Primarily, after ten years in the shoe trade, Colin's contacts are in the retail sector.
B.
After ten years in the shoe trade, Colin's contacts are primarily in the retail sector.
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【单选题】Despite the fact that they were____when they married,after 30 years they live together harmoniously.
A.
contradictory
B.
incompatible
C.
contrary
D.
compatible
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【单选题】After ten years' absence he came back only to find his family was not ______ it used to be.
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which
B.
what
C.
when
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【单选题】What will Sally be ______ ten years? [     ]
A.
after
B.
in
C.
behind
D.
before
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【单选题】下列关于战略环境的说法，错误的是()。
A.
影响国家安全或战争全局的主观意图和客观条件
B.
影响国家安全或战争全局的客观情况和条件
C.
主要包括国内和国际的政治、经济、外交等综合形成的客观条件
D.
是制定战略的客观依据
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【单选题】Even after having their grandchildren live with them for ten years, the couple felt that ______ children these days was the most difficult of all family matters.
A.
rising
B.
raising
C.
caring
D.
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相关题目：
【单选题】C++语言支持的()可以按其实现的时机分为编译时多态和运行时多态两类。
A.
多态性
B.
杀伤性
C.
韩国国内
D.
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查看完整题目与答案
【单选题】After living with his grandparents in the countryside for ten years, the boy returned to the big city ____ his parents worked.
A.
which
B.
where
C.
that
D.
when
查看完整题目与答案
【单选题】( )是指影响国家安全或战争全局的客观情况和条件
A.
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【单选题】________是影响国家安全或战争全局的客观情况和条件。
A.
战略环境
B.
战略方针
C.
战略目的
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【单选题】After ten years in the shoe trade, Colin's contacts are in the retail sector. (primarily)
A.
Primarily, after ten years in the shoe trade, Colin's contacts are in the retail sector.
B.
After ten years in the shoe trade, Colin's contacts are primarily in the retail sector.
查看完整题目与答案
【单选题】Despite the fact that they were____when they married,after 30 years they live together harmoniously.
A.
contradictory
B.
incompatible
C.
contrary
D.
compatible
查看完整题目与答案
【单选题】After ten years' absence he came back only to find his family was not ______ it used to be.
A.
which
B.
what
C.
when
D.
such
查看完整题目与答案
【单选题】What will Sally be ______ ten years? [     ]
A.
after
B.
in
C.
behind
D.
before
查看完整题目与答案
【单选题】下列关于战略环境的说法，错误的是()。
A.
影响国家安全或战争全局的主观意图和客观条件
B.
影响国家安全或战争全局的客观情况和条件
C.
主要包括国内和国际的政治、经济、外交等综合形成的客观条件
D.
是制定战略的客观依据
查看完整题目与答案
【单选题】Even after having their grandchildren live with them for ten years, the couple felt that ______ children these days was the most difficult of all family matters.
A.
rising
B.
raising
C.
caring
D.
taking care
查看完整题目与答案