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如图,在平面直角坐标系中,点A（6,0）,B（0,8）.若点P从点A沿AO方向以1个单位/秒的速度运动,点Q从点O沿OB方向以2个单位/秒的速度运动,且P,Q同时出发.（1）经过多长时间,△OPQ的面积为5?（2）△OP Nothing is more lamentable than a dead heart 英语翻译A program that can do nothing more than spit out numbers may be fine formathematicians这句怎么翻译呢? 中国有多少人登上过月球急 中国第一登上月球的人 请问smart,intelligent,wise 和clever等表示“聪明”的区别. clever,intelligent,alert,witty,bright,brilliant,smart,wise,sharp的区别? smart, wise, clever, brigth都是聪明的意思,他们有什么不同呢能不能就这4个单词拓展一段小短文呢,啊,不要太难,简单一点就行,如果能帮我再把英文短文翻译成中文,那就好的没话说了! The floor in your room needs_____________It is really dirty his room is rather small.it is( )rooma.a small enoughb.a fairly small为什么选B而不可以选A?enough也有非常的意思啊? MY hobby 初一英语作文 50字 人体中锌多或少了会怎样?铅和铁呢? Bob's mom is mad.His room is in a mess 纸面石膏的类型及特点 Do you want to be in our basketball team?什么意思 smart的用法 区分smart,bright,clever 语言简单一点,拜托啦 请问clever和smart有什么区别 the room is in a terrible mess ________（一定没打扫过）答案是cant have been cleaned 但是我觉得应该用 has The room is still in a mess;it ___ thoroughly cleaned.A.can't have been B .mustn't havebeenC .wouldn't have been D.shouldn't havebeen请问选哪个?选和不选的原因?顺便把句子翻译成中文. His room is always in a mess,isn't it? Yes,it's ---.1必须用含有词缀的词来填写。2一空只允许填一词。 The room is in a terrible mess,it ___ cleane;a、can’t have been b、shouldn’t have beenc、mustn’t have been d、wouldn’t have been 碱法吸收二氧化硫和石灰石—石膏法的化学原理相同之处 I hope i will be loving you forever and deeply的中文意思 I will love you forever、but I don't hope you can know 还有 I missing You,My Lover 是撒意思啊?帮个忙啊... 英语翻译cheese ,basil leaves and vine ripened tomatoes with olive oil - with some freshly grilled fish and a nice glass of red wine. 求英文翻译Nothing makes things go wrong more than working in a rush. 那些食物里铜,锌,铁,元素多? I want to stay with you ..my first love I want to stay with you ..my first love 谁能帮我翻译一下. 歌词搜歌 i well always love you,i well always stay ture.这首歌是在吴忠宪的王牌大明星上面听到的,是男女合唱,女孩子是新加坡的新人. 找了好久了,不知道是什么歌,不是外国人唱的那首~ 为什么有多种酸性气体杂质时要先除去酸性较强的 怎样区分酸性气体和有机气体的区分,寝室的朋友喜欢吸食冰毒,请问冰毒的气体属于什么气体,我应该戴哪种防毒口罩能最好的避免吸入这种有毒气体.请知道的朋友帮帮忙吧, 陋室铭中,诗人用有仙之山,有龙之水具体比什么?