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运动的北京天安门 已知北京天安门所处的纬度是39.9°(已知地球半径是6378km) 北京天安门随地球自转的速度为____m/s(结果保留三位有效数字) 加速度的大小为____m/s 2 (结果保留三位有效数字)
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A.
after
B.
when
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by
D.
while
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1%～2%，6%～8%
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【简答题】I usually play table tennis at my a_________ time. 我经常在活动时间打乒乓球。
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【简答题】根据句意及首字母完成单词。 1.I am going out. Please answer the p______ if someone calls me. 2.I love to eat v________ like carrots and tomatoes. 3.The Spring Festival usually comes in F________. 4.-Hi, where is my...
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