They _____ happy when they hear the news. [ ]
A. will
B. will be
C. were
D. don't
答案:B
下列公共标志中,与消防安全有关的是( )
A.①③④
B.②③④
C.③④⑤
D.①②③④⑤
根管最狭窄位于
A.约距根尖孔1mm处
B.约距根尖1mm处
C.约距根颈1/3与根尖1/3交界处
D.约距根颈1/3与根中1/3交界处
E.约在根管口处