【单选题】—Flight 551 for Dallas ________. I must be off now. —Have a pleasant trip then. [ ]
【单选题】Instituting a national health care plan means the federal government would pay for the medical care of all its citizens. Similar to plans in some European countries, a U.S. plan would also regulate do...
【单选题】 所有的物质实体都可以再分,而任何可以再分的东西都是不完美的。因而,灵魂并非物质实体。以下哪项是使上文结论成立的假设?