控制指令IF[<条件表达式>]GOTOn表示若条件成立，则转向段号为（）的程序段。
A、n-1
B、n
C、n+1
D、结尾
参考答案：B
A quarrel _________, which made him __________ his family.
A．was broken out; break away
B．broke out; break away from
C．was broken away; break down
D．broke down; break out
换辊方便但刚度较差的机架形式是（）。
A．闭口机架
B．半闭口机架
C．开口机架
