一患者行金属烤瓷冠修复，冠就位后发现冠十分密合，经调
无早接触后选择聚羧酸锌粘固剂粘固，调拌粘固剂时严格按照粉、液比例，按就位道方向就位，面垫一棉卷，让患者紧咬 5分钟，粘固完成后再次检查发现咬合过高。
最可能导致咬合过高的原因是（）。
A．患者咬合过分用力
B．粘固剂排溢困难
C．粘固剂选择不当
D．粘固剂调拌不当
E．棉卷垫置过小
参考答案：B
The Most Popular Pets in the world What are the most popular pets in the world? Cats and dogs! 小题1:___.This is around half of the country’s population(人口).About 60% of American families celebrate（庆祝） their pets’ birthday. Cats and dogs are also good topics for small talks---“ What a lovely dog! What’s his name?” 小题2:__ People think dogs are loyal（忠诚的） animals. They help do lots of jobs like hunting(打猎 ) and guarding(守卫 ). 小题3:_______. In 1957, Russia put a dog called Laika into space. Cats catch mice. They are not as loyal as dogs, but they can make people happy. Today, cats and dogs are both people’s good friends. 小题4:___. The most famous ones are Garfield and Snoopy. Garfield is a lazy fat cat. He likes eating and sleeping all the time. He is smart, too. He can write some letters and tell time sometimes, although he often repeats that he can’t. He is often mad at his master who can understand him well. Snoopy is a kind small dog. 小题5:______ . He likes to write stories and make his friends feel better.
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