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【单选题】
中国有 12 亿多人口,陆地自然资源人均占有量低于世界平均水平。A.
China has a population of more than 1.2 billion, and its land natural resources per capita are lower than the world’s average.
B.
China’s population is 1.2 billion and the natural resources on the land per head are lower than the world’s average level.
C.
The 1.2 billion people in China have lower land natural resources than in the world each.
D.
The land natural resources 1.2 billion Chinese have are less than the world has.
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举一反三
【单选题】在体系结构中，一个子系统主要是通过一些构件来实现的，下面不是实现子系统的构件的是______。
A.
界面构件
B.
业务构件
C.
用于用户传递的构件
D.
访问数据库构件
【单选题】Last weekend, I _____ my washing machine ______.
A.
had; repair
B.
had; repairing
C.
had; repaired
D.
had; to repair
【单选题】Everything he _______ to his country.
A.
had donated
B.
had been donated
C.
had to be donated
D.
had was donated
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