未知题型 下列自动喷水灭火系统中，（ ）可用于温度低于4℃或高于70℃的场所。

单项选择题 A．实证 B．虚证 C．虚实夹杂 D．虚中夹实 E．实中夹虚扶正法适用于( )

未知题型 听力原文： (24[A]) Northern Ireland peace talks resumed yesterday with negotiations under orders from the US Chairman George Mitchell, former US Senator, (23[C]) to stop haggling and get down to the business of solving the worst violence in the province, 'The time has come to get down to serious negotiations and not to waste your time on full stops and commas. There is an urgent need for this process to proceed.' George Mitchell said.The talks, launched with fanfare by the British and Irish governments in June 12, started, however, without representatives of the key players, the IRA guerrillas fighting the British rules.Who is George Mitchell?A．A representative of the IRA guerrillas.B．A key player.C．A former US SenatorD．A businessman and writer.