下列哪一种不是粘接桥修复的适应证（）
A.上颌两个中切牙缺失
B.下颌两个中切牙缺失
C.上颌尖牙缺失
D.下颌第一磨牙缺失
参考答案：C
Remember the letter for me. [ ]
A. sending
B. sends
C. to send
D. send
_____sustainable development, measures are being drafted to control rising prices.[ ]
A. For the sake of
B. In favor of
C. In case of
D. In memory of
