城市道路次干道的限制最大纵坡一般为( )。
A．2%～4%
B．4%～6%
C．6%～8%
D．8%～10%
参考答案：B
One should have a _______ of right and wrong.
A．feeling
B．knowledge
C．sense
D．idea
It ______ to be seen who will be the victor in the contest.
A．stayed
B．remained
C．kept
D．left
