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【单选题】
下列关于之的叙述正确的是( ) 1 生活在南北朝时期的地理学家 2 最突出的成就是在数学领域求得比较精确的圆周率 3 利用前人创造的“割圆术” 4 将圆周率精确到小数点以后的第八位 5 著有《水经注》A.
①②③
B.
③④⑤
C.
②③
D.
①③⑤
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【单选题】We are new here, so ______ of us knows he way to the hospital.
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C.
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D.
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