患者，女，65岁，牙列缺失三月余，体检：全身一般情况良好，口腔_爱下问搜题

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问题单项选择题

患者，女，65岁，牙列缺失三月余，体检：全身一般情况良好，口腔检查上、下颌第二磨牙均已拔除，拔牙创愈合良好，牙槽嵴中等丰满，倒凹不明显，黏膜组织无异常发现，上、下颌位置关系正常

在无牙颌模型上哪一个解剖结构相应的基托组织面不需要缓冲（）

A．下颌隆突

B．上颌硬区

C．舌侧翼缘区

D．切牙乳突

E．不平整的牙槽窝

答案

参考答案：C

解析：

舌侧翼缘区是与下颌全口义齿舌侧基托接触部位的解剖标志，舌侧翼缘区后部是下颌全口义齿固位的重要部位，此区基托应有足够的伸展。

完形填空

For John and Amy, birthdays have always been a big deal-a welcome excuse to celebrate life.
When their son, Alex, 36 three in 2005, they invited 20 friends to a nearby park. Not long after that the 37 were brainstorming ways to teach Alex about giving to 38 . “We wanted to do something that would have a(an) 39 on our community, and that our young child could 40 in. We started wondering what 41 fortunate kids do on their birthdays. The next day, we called a local shelter, and learnt that 42 children typically didn’t do 43 to celebrate at all. No cake. No gifts. No party.” The couple said.
Several weeks later,   44 held a party at the 45 for the children who had birthdays that month. They decorated, served cake, and danced with 50 kids. Alex helped to 46 presents.
47 that first party, the couple have turned their simple idea_ 48 Birthday Blessings, a nonprofit that hosts monthly parties at 10 shelters.
To date, Birthday Blessings (birthdayblessings.org.) has thrown more than 500 49 at different shelters and handed out 22, 000 party   50 to nearly 4000 homeless children in and around their community.
Birthday Blessings is 51 entirely by volunteers. The charity（慈善）will take almost anything—toys, clothing, candy, baby items— 52 it’s not used. “These kids never get anything new.” John said, “It makes a big 53 to them psychologically.”
Being “part of this labor love” is 54 making an impression on their son Alex. On his seventh birthday, his grandparents sent a check.   55 it, the first thing he said was that he wanted to give half to the birthday kids.

D．description

A．participate

C．as simple as

单项选择题

有利于信息横向传递和富有灵活性的组织机构形式是（）。

A.矩阵式

B.直线职能式

C.事业部式

D.三角式