小明同学将写有字母“p”的载玻片,放在显微镜下观察,看到的物像应该是( )
A:p
B:b
C:d
D:q
Each of us is looking forward _________ a good result. Let's do it more carefully.
已知a>b>c且4a-b+1b-c+kc-a≥0恒成立,则k的最大值是( )