划伤是带钢表面长度方向上发生的连续的划痕，一般是设备与带钢接触产生的，如辊子等。解决方法是保持稳定的张力和保证辊子表面的（）。
参考答案：清洁
She's sick of being seen as a sex symbol and wants to be taken ________ as an actress.
A．sincerely
B．happily
C．precisely
D．seriously
I'd like to share a story ______ music overcomes a physical barrier and makes a connection with a young student.[ ]
A. which
B. that
C. when
D. where
