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【简答题】
一般当沿线 在 米以下时,可以认为是平坦地区输气管道。
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皮皮学刷刷变学霸
举一反三
【单选题】The author pointed out all the following facts EXCEPT that ______.
A.
to eliminate alien species for the sake of the indigenous ones is also ecological imperialism
B.
humans efforts to correct ecological disorders is actually based on human preference
C.
people's attitudes towards alien species involve moral considerations
D.
human have to design nature to protect biodiversity