皮皮学，免费搜题
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【单选题】
下列哪项不是慢性龋的特点A.
只见于成年人
B.
病变进展慢
C.
病变组织颜色深
D.
病变组织质地较干硬
E.
去腐时不易大块去除
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】A．exploded B．opened up C．dug out D．explored
【单选题】The conference explored the possibility of closer trade links．
A.
reiected
B.
examiHed
C.
proposed
D.
exposed
【简答题】___________the 1500's____________the first Europeans explored the coast of California. A.It was not until ... when B.It is until ... that C.It is not until ... when D.It was not until ... that
【单选题】The conference explored the possibility of closer trade links.
A.
rejected
B.
investigated
C.
proposed
D.
exposed
【简答题】Zheng He explored as far as Somalia and Kenya on the eastern coast of ______.
【简答题】The conference explored the possibility of closer trade links.
【简答题】A．scanned B．examined C．studied D．explored
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