對于淺埋隧道，圍巖自然拱：()
A、能形成D
暫無解析
ThePortraitofALadyisgenerallyconsideredtobe()masterpiece,whichdescribesthelifejourneyofanAmerican()inaEuropeanculturalenvironment.
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ModernEnglishwordsman,woman,child,eat,fight,etc,originatefrom______.
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Thistypeofdeskandchaircanbeadjusted________theheightofstudentsatdifferentages
