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单项选择题以下不属于政府投资的特征的是( )。 A．政府投资以实现社会经济的全面发展和良性循环为目标，因此政府投资的主要依据是社会效益与社会成本的高低，但是，政府投资不允许亏损 B．在市场经济条件下，政府投资通常不进入竞争性领域，只能是对市场投资行为的补充 C．政府投资通常用于事关国计民生的公共工程和基础产业等大型项目与长期项目 D．政府投资是政府用以调控经济的重要手段

未分类题听力原文：W: Hello!M: Hello. Lucy. This is John. Could you do me a favor? I've tried to phone my wife six times and 1 can't get through. The line is busy all the time. Could you possibly go to the next door and give her a message?W: Sure! What do you want to tell Mary?M: Could you just say I've met an old friend and I'm staying with him? I'm not at the hotel and I'll give her a ring later.W: Sure, I'll go fight now.M: Thanks a lot, Lucy.W: OK. Bye!M: Bye!What did the man ask the woman to do?A．To book a hotel room for him.B．To meet an old friend of hers.C．To pass a message to Mary.