问题
选择题
Surfing is the most exciting sport that I have done.[ ]
A. just
B. yet
C. never
D. ever
答案
答案：D
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Surfing is the most exciting sport that I have done.[ ]
A. just
B. yet
C. never
D. ever
答案：D
缺失，口腔检查发现其
区牙槽嵴吸收严重，呈窄条状，患者口述其原义齿有压痛现象。以
为基牙进行可摘局部义齿修复，余留牙正常。