一日，名家代表人物公孙龙骑马进城。守城士兵说：“王法规定，马过城门应当纳税。”公孙龙说：“马过城门应当纳税，但我骑的是白马，白马非马，不应当纳税。”士兵说：“白马当然是马，你应当纳税。”公孙龙反问道：“如果白马是马，那么，黑马也是马了？“守城士兵说：”那是当然。“公孙龙继续说道：”按照你的逻辑，白马是马，黑马是马，那么，白马和黑马就没有差别了，因此，白马非马。”守城士兵被公孙龙说得不知如何应对，但依然不为所动。最终，公孙龙为了进城，只得为马纳税。关于本案，下列说法正确的有（ ）。“
自2014年开始，全国法院对近20年来未实际执结的执行案件进行全面清查核录，把1600余万案件录入执行案件管理系统，彻底解决执行案件底数不清、情况不明的问题。通过建立网络执行查控系统、网络司法拍卖、增加被执行人的失信成本，我国当前已基本解决执行难问题。下述理解正确的有（ ）。
O is the representative of a college students’ union and is organizing a student sports game. P store agreed to sell to O ten boxes of “Purity” bottled water for the game. However, the water delivered to O actually bore the label of “Clean and Sweet,” which brand was as good as “Purity”. Q, a sales representative of “Purity” water sued P store for breach of contract and the court held for P, the most probable reason would be
O and W signed a written contract under which O would sell 3 big trees to W at $500. Later the market price for the three trees increased to $650. One day before the delivery date, a fire burned down all three trees without the fault of either O or W. O sued for $500, and W counterclaimed for $650. Which of the following statements is true?
O hired W to help remove 3 big trees from one corner of O’s farm to another corner. When W had moved the first tree, there was a fire burning down all three trees without the fault of either O or W. Which of the following statements is NOT ture?
S badly needed cash and offered to sell an antique that was a gift from his grandparents. B, an owner of an antique shop, offered to buy it at $ 1,000 and S agreed. Before delivering the antique to B, S discovered that the market price of the antique was actually $ 10,000. He decided not to sell it to B. If B sues S for breach of contract, which of the following is the best defense that S may allege?
K was injured by a car and lied on the walkway bleeding. L passed by and saw K, but he did not stop. Later K died because of bleeding and K’s personal representative sued L. If the court held for L, it would be because
