2011年4月28日，国家统计局发布2010年第六次全国人口普查主要数据公报。下表为第五次全国人口普查和第六次全国人口普查部分数据（注：①第五次人口普查的时间为2000年11月1日；②人口性别比：以女性为100，男性对女性的比例）。读表并结合所学知识，回答1—3题。

1、与第五次全国人口普查相比，第六次全国人口普查数据显示

①人口性别比例严重失调；②老龄化程度越来越严重；③已达到环境人口容量；

④人口素质显著提高；⑤处于城市化成熟阶段；⑥普查统计难度增加[ ]

A．①②③

B．③④⑤

C．④⑤⑥

D．②④⑥

2、今后，为解决我国的人口问题，下列措施不合理的是[ ]

A．继续采取措施，提高人口性别比

B．继续保持低生育水平

C．不断提高人口素质

D．不断完善社会保障体系

3、下列措施与控制出生性别比关系不大的是[ ]

A．调整工业结构，发展低碳经济

B．健全农村计划生育家庭养老保障制度

C．倡导科学、文明、进步的婚育观

D．健全孕产跟踪服务和B超使用登记制度

Big Cheese Chairs (BCC) manufactures and sells executive leather chairs. They are considering a new design of massaging chair to launch into the competitive market in which they operate.They have carried out an investigation in the market and using a target costing system have targeted a competitive selling price of $120 for the chair. BCC wants a margin on selling price of 20% (ignoring any overheads).The frame and massage mechanism will be bought in for $51 per chair and BCC will upholster it in leather and assemble it ready for despatch.Leather costs $10 per metre and two metres are needed for a complete chair although 20% of all leather is wasted in the upholstery process.The upholstery and assembly process will be subject to a learning effect as the workers get used to the new design. BCC estimates that the first chair will take two hours to prepare but this will be subject to a learning rate (LR) of 95%. The learning improvement will stop once 128 chairs have been made and the time for the 128th chair will be the time for all subsequent chairs. The cost of labour is $15 per hour.The learning formula is shown on the formula sheet and at the 95% learning rate the value of b is –0·074000581.Required:

(b) Assuming that a cost gap for the chair exists suggest four ways in which it could be closed. (6 marks)The production manager denies any claims that a cost gap exists and has stated that the cost of the 128th chair will be low enough to yield the required margin.