问题 单项选择题 A1型题

双曲唇弓“U”形曲制作时,其顶部离龈缘上方 ()

A.0.5~1mm

B.2~3mm

C.4~5mm

D.1~2mm

E.3~4mm

答案

参考答案:A

解析:双曲唇弓用以辅助固位及内收切牙。弓丝位于前牙切1/3与中1/3交界处,在两侧尖牙近中1/3处,将钢丝向牙龈方向弯成两个"U"形曲,曲的宽度是尖牙宽度的2/3,高度应距前庭底2~3mm并离开组织面1.0~1.5mm,钢丝末端经尖牙与第一前磨牙的颊外展隙到腭部形成连接体,埋于基托内。

改错题

第Ⅱ卷 (非选择题,共20分)

第四部分:写作(共两节,满分20分)

第一节:短文改错(共10小题;每小题0.5分,满分5分)

此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在该行右边的横线上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:

该行多一个词:把多余的词用斜线(划掉,并在该行右边横线上写出该词,并也用斜线(划掉。

该行缺一个词:在缺词处加一个漏词符号(∧),并在该行右边横线上写出该加的词。

该行错一个词:在错的词下划一横线,并在该行右边横线上写出改正后的词。

注意:原行没有错的不要改。

 Isabella is one of my best friends. She had taught                     66.    

us English when I attended training course two                            67.    

years before. Isabella always made good preparations                      68.    

for the lessons, she tried her best to make her                              69.    

classes lively. I used to being poor in English,                         70.    

especially in written English. But now, I'm able                           71.    

to write English letters and reports correct.                               72.    

I still remember how she helped me for my English                       73.    

patiently. Teachers’ Day is approached. I'm going to                     74.    

send to her a card and give her my best wishes.                           75.    

单项选择题