问题
单项选择题
某患者，33烤瓷联冠修复，临床试戴基底冠时，发现1颈缘均匀短0．4mm，其余密合，出现此种现象最可能的原因是（）。
A.1|基底冠蜡型制作时间过短
B.1|代型复位不良
C.铸造不全
D.颈缘打磨过多
E.间隙剂过薄
答案
参考答案：B
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某患者，33烤瓷联冠修复，临床试戴基底冠时，发现1颈缘均匀短0．4mm，其余密合，出现此种现象最可能的原因是（）。
A.1|基底冠蜡型制作时间过短
B.1|代型复位不良
C.铸造不全
D.颈缘打磨过多
E.间隙剂过薄
参考答案：B
Have you ever not wanted to do something so badly? Well，that’s how I about joining Madcaps，a mothers and daughters’club assisting charity. ，my feeling changed finally. Now I believe if you adopt an attitude．you might just enjoying it. Six months ago，my mom told me the club asked us to work as at Saint Vincent de Paul Homeless shelter．That meant I had to in the dirty homeless shelter for at least 20 hours. The first lime we went there，a lady led us to the kitchen where we my five fellow Madcaps classmates- they also wore the same mark .Since I′m usually awkward， I had never talked with any of them .Worse still，my mom was asked to help outside the kitchen，leaving me totally to serve food with them. Soon large numbers of homeless families in like rushing river．A little girl，around 5 years old，walked up to me I her a sandwich. She took it and joined her family quickly．As she walked away, I she was wearing a coat．Clearly too big for her, hanging on her thin body, and couldn’t help thinking how much I had with her．It suddenly struck me that how I am. After that moment I had a of heart Now I love Madcaps and don’t miss one meeting I have awkwardness when communicating and have many friends. And this year I am sure I will do more than the 20 hours of charity. So that is how I have made a by doing one thing I do not want to do .If you have an open about things you can accomplish more and become a well-rounded（全面的）person.
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