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【单选题】
目前临床根管充填常用的材料是A.
ZOE糊剂
B.
牙胶尖+ZOE糊剂
C.
+ZOE糊剂
D.
牙胶尖+氢氧化钙糊剂
E.
氯仿+牙胶尖
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反馈参考答案：
举一反三
【简答题】() 是信息的源头技术
【单选题】— Hello! May I speak to Kate? — Sorry, she isn’t here now. She __________to Shanghai.
A.
went
B.
has gone
C.
has been
D.
goes
【简答题】为什么说仪器技术是信息的源头技术 ?
【单选题】Kate isn’t here. She _____ the supermarket.
A.
has been to
B.
has gone to
C.
went to
D.
will go to
【单选题】--Hello! May I speak to Kate? --Sorry, she isn’t here now. She __________to Shanghai.
A.
went
B.
has been
C.
has gone
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