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患者男，63岁，上颌全牙列缺失。下颌多数牙缺失，仅余。牙槽嵴丰满，牙合间距离正常

患者进食时发生咬颊现象，原因是（）.

A.义齿边缘伸展不够

B.垂直距离过高

C.正中关系不正确

D.人工牙排列覆盖过小

E.以上都不是

答案

参考答案：D

阅读理解
阅读理解。
          The Hermitage Museum
     The Hermitage Museum is one of the most
important sights to see for any visitor to St.
Petersburg. There you can see lots of different
paintings of old masters inside the Hermitage.
Prepare to come face-to-face with classic
Western artists.
          The Russian Museum
     The Russian Museum holds one of the
largest collections of Russian art in the
world. View Russian art creations through
the ages, from Byzantine (拜占庭)-style
icons to the Socialist Realism of Stalin's
times. 		                                             
                  Kizhi Island
      Kizhi Island is an open-air museum of
wooden buildings from the Karelia Region
of Russia. These impressive structures are    
made without any nails (钉子)-the wood
fits together with joints and grooves (沟槽).
                  Peterhof
      Peterhof is as beautiful as it is fun. You'll
be charged for admission (门票), but go
to Peterhof when the fountains (喷泉) are
working-during the day in the summer.
They are shut off in winter as well as in
the evenings. 		                                                    
        The Church of Our Savior on Spilled Blood
      Love it or hate it, the Church of Our Savior
on Spilled Blood is an attractive must-see sight.
The beautiful look may make your eyes brighten,
and the paintings inside the church will make you
say"Wow!"
     The Bronze Horseman Statue 
     The Bronze Horseman is a part of
Russian Culture and a symbol (象征) of St. 
Petersburg. Made famous by Alexander
Pushkin (普希金), this statue of Peter the
Great sitting on his horse can truly show
Peter the Great's influence on the Russian
idea of greatness. 		                                                  
1. If you're interested in paintings, you'd better go to _____.
[ ]
A. the Hermitage Museum and Peterhof
B. the Hermitage Museum and the Church of Our Savior on Spilled Blood
C. Kizhi Island and the Church of Our Savior on Spilled Blood
D. the Russian Museum and Kizhi Island
2. The man on the Bronze Horse refers to _____.
[ ]
A. Peter the Great
B. Alexander Pushkin
C. Byzantine
D. Stalin
3. What can we know from the passage?
[ ]
A. The fountains in Peterhof can be seen all year round.
B. The largest collection of Russian art is in the Hermitage Museum.
C. The buildings on Kizhi Island are made of wood.
D. You can visit Peterhof free of charge.
4. The main purpose of this passage is to _____.
[ ]
A. show the wonderful history of Russia
B. introduce the famous buildings in Russia
C. persuade artists to study St. Petersburg
D. attract tourists to visit St. Petersburg
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判断题

各级人大代表的选举采取公开投票原则。 ( )
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