证明n维向量a1，a2，…，an线性无关的充分必要条件是方阵D不等于0方阵D=|a1Ta1…a1Ta

天变不足畏,祖宗不足法,不懂啊// The door clicked shut.请问这里的谓语动词是哪个?shut 是不是动词?过去分词做状语，为什么可以放在谓语动词前面呢？充当状语的一般不是放在动词后面的吗？我觉得还是click是动词。 “天变不足畏,祖宗不足法,人言不足恤”什么意思? 天变不足畏,祖宗不足法,人言不足恤.温家宝总理说的话 谁知道具体的意思? 天变不足畏祖宗不足法,人言不足恤有什么内容 The door clicked shut.这句是动词连用吗?门卡塔一声关上了click 与 shut都是动词,为何连用?省略了and?shut没有形容词词性吧？ Who is in charge here?这里谁负责?charge在这里也没有负责的意思啊 charge的用法 rather than 的近意词是A together with B insead ofC as well as D instead 用rather than 和less than造句 文言文州官放火的翻译 The boy is too young.he can't go to school alone.The boy is too young to go to school _____ _____.同义句不对啊 是两句并一句 而且是he can't 不是he can 文言文《陵州盐井》的翻译 The boy is too young to go to school __(alone)该填什么 Do you mind ____(close) the door? --Do you mind if I open the door?--______.Do,pleaseA Not at allB Of course notC Better notD Never mind 用所给动词的适当形式填空 would she_____（mind）______（open） he door? 如何能快速复原魔方?谁能教一下如何能快速复原魔方啊?:smilies65: "In my thought" 是“在我看来.”,还是“在我的记忆中...”或者其它. furniture可数吗 when用法 when 用法I was watching (watch) TV when Shenzhou6 was sent up into space.when 引导的时间状语从句,从句是一般过去时,主句是过去进行时.(明白)We heard (hear) him singing in the next room when we passed.Mother told (tell) me no when后的用法比如说当碰到困难时,是表达成when meeting problems还是when meet problems?这里的when 后面应跟名词性词组还是? it's ____ to put on the seat belt each time This hall can ___1000 people .you can ___where you like. A.hold scat B,be seated seated C.seat be seated D.hold seating 关于 seat oneselfthe man sitting in the chair asked me to be seated.要是吧sitting 改为seated 也可以吧 把最后的be seated 改为 seat myself when的用法别解释介词,连词之类的,我分不清.概括一下when前后分别在哪种情况下用什么时态就可以了,别复制!急求!明天要考! seat的用法,还有be seated是什么意思 sit oneself 还是seat oneself 关于when的用法1.When i came in,i ____(call) them up.2.When i came in,i closed the door and _____(call) them up.问问答案,顺便我想知道当when的另一个句子中也是非延续动词时,该用一般过去式还是过去进行式...谢 furniture可数吗?要具体的.不用补充我明白了. 翻译 “People said that after one year,...翻译 “People said that after one year,and i think it's no more true after 35 than it was after one.能具体分析一下句子的结构和用法