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【单选题】
乳牙的特点不正确的是A.
牙冠短而宽
B.
体积小
C.
乳白色
D.
颈部 缩窄，颈嵴突出
E.
乳前牙宽
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【简答题】这最初的四分钟不是抱怨身体不佳或谈论自己在别人身上所发现的缺点的时候。(complain about)
【简答题】Translate the following into English. ● 这最初的四分钟不是抱怨身体不佳或自己在别人身上所发现的缺点的时候。( complain about )
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