没有价值是什么意思

hi,luck,you look tired.l'm really tired,because l( )the liveing room all day.a.paintedb.had painted c.have been painted d.have been painting 为什么做饭时间保险丝会断某居民楼经常在做饭时间保险丝熔断，这一般是由于？造成的。可以说是电流太大吗？ 关于保险丝与浓盐酸反应的问题将保险丝放入浓盐酸中,便渐渐有气泡产生,随后气泡增多,反应结束时仍有相当一部分的保险丝未溶解.将溶液稀释后有白色沉淀产生.请问这时怎么回事?白色沉 I am rather tired ,wil youtake the wheel The film had a rather tired plot为什么这句话中tired而不是tiring The work is very interesting.i do get rather tired.这句是说这个工作很有趣虽然让我...The work is very interesting.i do get rather tired.这句是说这个工作很有趣虽然让我很累.还是这个工作有趣,但是让我太累了? James was only weak in English,so his mother sent him to the English class.James got good grades because of his good momory.If he heard any passage once,he could read and put it into Chinese.However,he could not make his own sentences.And his face us James was only weak in English,so his mother sent him to the English class.James got good grades because of his good momory.If he heard any passage once,he could read and put it into Chinese.However,he could not make his own sentences.And his face us James was only weak in English,so his mother sent him to the English class.James got good grades because of his good momory.If he heard any passage once,he could read and put it into Chinese.However,he could not make his own sentences.And his face us 英语翻译“Students’ Final Exam Results of the first semester of 2008 Fall academic year ”可以不?2009年上期期末学生成绩单可以翻译成“Students’ Final Exam Results of the second semester of 2008 Fall academic year in 2009 理科很烂,思维不太灵敏学商务英语困难吗?（请学商务英语的人帮忙解答!） 请问哪个字典上可以查到这个字?请问“木”字边加一个“强”字怎么念?在哪个字典上可以查到这个字的? “口者”这个字怎么打不出来?字典也查不到?没有这个字吗?“口者”因为打不出来所以我分开两个字来打,其实应该是一个字吧~我在一些商品上都看到,但是怎么打不出来而且新华字典里也查 “平时成绩”的英文怎么说? 这个字怎么在字典上查?3Q五笔也不知道怎么打,也不知道怎么读,医学上药名.左边是"颈"的左边,右边是"流"的右边,药名叫“他巴唑”的,甲__咪唑片.字典也差不出来, What is in the village的中文 翻译：where is the what if the what is in why 英语翻译刻在项链坠子上的,看不清楚,有断断续续,但并不深奥,就是偶英文太菜了,看不来：i bless ne day i found you i want to stay aroun you and so begyou let it beme大概就是这样,半猜的,有漏的,也有可能n 英语翻译xiexie neighbor是可数吗 neighbor中文是什么意思 neighbor是可数名词么做“邻居”讲的时候 neighbor是什么意思?他的中文意思~ 关于fit和healthy的问题健康的食物是不是只能用healthy food,能说fit food吗? neighbour什么意思 neighbour的意思 neighbour 什么意思? neighbour 着是什么意事? Nosy Neighbour是什么意思啊! 这张照片内涵到底在哪呀, 我要做个 迷你打火机 电路图有些东西看不懂 英语大神进,问个有关合成词的问题.