一般情况下，当受拉钢筋直径最小大于（）mm时，不宜采用绑扎搭接接头。
A．22
B．25
C．28
D．32
参考答案：C
________ from endless homework on weekends, the students now find their own activities, such
as taking a ride together to watch the sunrise.[ ]
A. Freed
B. Freeing
C. To free
D. Having freed
在2006年，重庆有______项文化遗产入选全国第一批非物质文化遗产名录。
