高效课堂改革要求破传统的教育观、教学观、师生观。（）
参考答案：对
30. At 60 the famous film star Dustin Hoffman is at a point in his art career _______ the chances are narrowing but the roles seem stronger.
A．where
B．that
C．which
D．when
沿溪线高线位与低线位的特点是什么？
