问题
单项选择题 案例分析题
患者，女，4岁，前牙反
，家族无类似畸形。有咬上唇习惯。上前牙略舌倾，下前牙直立，可退至切
治疗结束后保持（）.
A.Hawley式保持器
B.功能矫治保持
C.固定保持
D.不需戴保持器
E.以上都不是
答案
参考答案：D
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患者，女，4岁，前牙反，家族无类似畸形。有咬上唇习惯。上前牙略舌倾，下前牙直立，可退至切
治疗结束后保持（）.
A.Hawley式保持器
B.功能矫治保持
C.固定保持
D.不需戴保持器
E.以上都不是
参考答案：D
| 阅读理解。 Toby went to China for sightseeing with his parents this summer. Their first destination (目的地) was Beijing. They arrived in Beijing on 8th, August. According to the travel plan, can you guess what they did in Beijing? | ||||||||||
根据表格内容，选择正确答案。 1. How much did they pay for the Beijing tour? A. $140. B. $280. C. $560. D. $840. 2. What meal did the travel agency give them on their first day? A. Breakfast. B. Lunch. C. Supper. D. Dinner. 3. Where did they go in the evening on their second day? A. Tian'an Men Square. B. The Palace Museum. C. The Summer Palace. D. Beijing Theater. 4. How many places of interest did they go to on their third day? A. 1 B. 2 C. 3 D. 4 5. When did they leave Beijing? A. On the afternoon of the 11th B. On the morning of the 11th. C. On the afternoon of the 12th. D. On the morning of the 12th. | ||||||||||