产品计划完成情况统计表
计划产量与实际产量差异最大的是哪种产品（）
A．普通铝锭
B．稀土铝
C．电工铝
D．拉丝铝
参考答案：B
Only ticketholders were ________ to the stadium for the concert given by Jay Chou, so many of his fans were turned away.
A．allowed
B．permitted
C．agreed
D．admitted
科学技术如果要真正成为第一生产力，必须以科学的（）为前提。
A.管理
B.手段
C.知识
D.技巧
