电缆敷设时，在端头和中间接头附近应留有（）m的备用长度。
A、0.3~0.5
B、1~1.5
C、2~3
参考答案：B
用22根同样长的小棒可以摆成______个△，还剩______根小棒．
It was in the stone house was built as a school by local villagers the boy finished his primary
school.[ ]
A. which; that
B. that; where
C. which; where
D. that; which
