【单选题】As it turned out to be a small house party, we ______ so formally.
B.
did not need have dressed up
D.
needn't have dressed up
【简答题】“正确答案只有一个”这种思维模式.在我一门头脑中已不知不觉地根深蒂固。事实上,若是某种数学问题的话,说正确答案只有一个是对的。麻烦的是,生活中大部分事物并不像某种数学问题那样。行之有效的方法,到了现在往往不灵了。正因为如此,如果你认为正确答案只有一个的话,当你找到某个答案以后,就会止步不前。因此,不满足于一个答案,不放弃探求,这一点非常重要。 然而,寻求第二种答案.或是解决问题的其他路径和新的方法...
【单选题】As it turned out to be a small house party, we so formally.
B.
did not need have dressed up
C.
did not need to dress up
D.
needn’t have dressed up
【单选题】企业必须建立质量保证系统,同时建立完整的( ) ,以保证系统有效运行。
【多选题】极性液体和极性固体介质中的损耗主要包括()
【单选题】As it turned out to be a small party in the house, we______so formally.
B.
did not need have dressed up
D.
needn't have dressed up