下列哪种情况可做3/4冠修复
A．舌面有广泛龋B．扭转前牙C．切缘有较小的缺损D．死髓牙E．邻面有较大的缺损
参考答案：C
I'm not surprised that he became a writer. Even as a child he had a _____ imagination. [ ]
A. clear
B. cautious
C. funny
D. vivid
燃烧石油时，（）以溴代氯化物形式排出。
A.汞
B.铅
C.铜
D.氯
