目前，联合国关注的重点问题是[ ]
A、解决发达国家的困难
B、弘扬奥林匹克精神
C、反对国际恐怖主义活动
D、促进世界经济发展和福利进步
答案：D
________ the police thought he was the most likely one，since they had no exact proof about it，they could not arrest him.
A．Although
B．As long as
C．If only
D．As soon as
小红家于2011年2月29日购买了一套电梯房．______．
