在龙门剪床上剪切钢板时，选择剪切顺序的原则是应保证每次剪切能将钢板分成两块。( )
参考答案：对
Drugs can do great harm (危害) not only to you but also to your family. You must be ________ them.[ ]
A. along with
B. out of
C. in front of
D. away from
纳美尔记功石板的反面有几部分组成（）
A、1.0
B、2.0
C、3.0
D、4.0
