问题
选择题
It's so dark (黑暗) in the room. _____ the lights, please.[ ]
A. Turn on
B. Turn off
C. Turn down
D. Turn up
答案
答案：A
搜题请搜索小程序“爱下问搜题”
It's so dark (黑暗) in the room. _____ the lights, please.[ ]
A. Turn on
B. Turn off
C. Turn down
D. Turn up
答案：A
缺失，纯钛支架修复。其支架打磨正确的方式为（）