适合交钥匙合同、大型复杂的设施采购、特殊性质的工程、复杂的信息和通信技术合同招标的程序为（）。

A．一阶段双信封招标程序

B．二阶段单信封招标程序

C．二阶段招标程序

D．二阶段双信封招标程序

Passage Two

Which is the most appropriate title for the passage

A．A Comparative Study of the Telecom Industry in China and India

B．Differences on Use of Mobile Phones in China and India

C．Geographical and Cultural Differences between China and India

D．Different Regulations on Mobile Phones in China and India