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【单选题】
初产妇第二产是指第二产程时间
A.
超过0.5小时
B.
超过1小时
C.
超过2小时
D.
超过3小时
E.
超过4小时
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【简答题】A biome is a major biotic community characterized by the dominant forms of plant life and the prevailing climate. It is a major ecological community, extending over a large area and usually characteri...
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flat land
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