钢绞线表面不得有润滑剂、油渍和轻微浮锈。( )
参考答案：错
____ for a long time is bad for your eyes.[ ]
A. Reading
B. Read
C. Playing football
D. Sleeping
_____ exciting sport it is to climb the mountains! [ ]
A. How
B. What
C. What a
D. What an
