档案统计研究的基本要求是（）。
A、准确性、及时性、稳定性
B、准确性、完整性、科学性
C、准确性、及时性、科学性
D、准确性、及时性、完整性
参考答案：C
The people in Taiwan consume______milk per person today as they did twenty years ago.
A．more than twice as many
B．twice more than as much
C．so much more than twice
D．more than twice as much
水的碱度
