大量偶然误差就总体来看，具有一定的统计特性，根据它的特性，合理的处理观测数据，能减小偶然误差对测量成果的影响。
参考答案：对
--- Lydia, what did our headteacher say just now?
--- Every boy and every girl as well as the teachers who to lead the group
asked to be at the school gate before 6:30 in the morning.
A．is; is
B．are; are
C．are; is
D．is; are
快攻结束段三攻二，防守队员（）站位时要用中路突破为主进攻。
A.垂直站住
B.斜线站住
C.平行站住
