The 30th Olympic Games, ______ between July 27 and August 12 in 2012, will take place in London.

A．scheduling

B．to schedule

C．scheduled

D．to have scheduled

证券市场素有“经济晴雨表”之称，它既表明证券市场是宏观经济的先行指标，也表明宏观经济的走向决定了证券市场的长期趋势。( )