问题
单项选择题
上前牙牙根唇面宽于舌面的生理意义是（）。
A.与牙冠较宽的唇面相延续
B.抵抗意外碰撞的外力
C.抵抗向前的
力
D.与牙槽嵴形态相适应
E.补偿牙弓较大的外径
答案
参考答案：C
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上前牙牙根唇面宽于舌面的生理意义是（）。
A.与牙冠较宽的唇面相延续
B.抵抗意外碰撞的外力
C.抵抗向前的力
D.与牙槽嵴形态相适应
E.补偿牙弓较大的外径
参考答案：C
Italian Lakes and Greek Islands(12days) Prices starting from$1999 Your tour begins in Milan, Italy, and moves on to the pretty Italian Lake District and the attractive resort（胜地） of Stresa, your home for two nights. Collette Vacations has carefully chosen the Costa Victoria as your home away from home for your 7-night journey along the waterways of the Mediterranean. The cruise ship is filled with the warmth and culture of Italy and is richly designed with entertainment（娱乐） areas and very good living conditions. It will take you to the places of your dreams. You’ll spend 4 days touring Greek cities you’ve always heard about. In Katakolon, you will have the only unguided tour to nearby Olympia on the whole journey. Then with a local guide you will visit the Greek islands of Santorini, which is often related to the story of the lost city Atlantis, and Mykonos, a wonderful island with beautiful beaches. Your journey ends in Verona, home of the love story Romeo and Juliet, with a fun-filled farewell dinner--- a perfect ending to a pleasant journey. 12Days, 25 Meals, 10 Breakfasts, 6 Lunches, 9Dinners Day 1 Overnight fight to Italy Day 2-3 Regina Palace, Stresa, Italy Day4—10 Costa Victoria (Costa cruises) Day11 Hotel Leopardi, Verona, Italy Day12 Leave for home Please Note
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