问题
选择题
Sunglasses are used protecting your eyes on sunny days.[ ]
A. to
B. as
C. for
D. by
答案
答案：C
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Sunglasses are used protecting your eyes on sunny days.[ ]
A. to
B. as
C. for
D. by
答案：C
缺失，进行可摘局部义齿修复，基牙为
，舌侧牙槽嵴为垂直型。采用大连接杆连接，其中
向中舌侧倾斜，其余基牙正常。