斥力和引力间距离

当x趋近于无穷大时,求lim(sin^2x-x)/(cos^2x-x)的极限 求较详细解答　最好有公式图 ______next time ,and you'll succeedworking hard 还是work hard. 2．He has ______ for three or four days.A．got a headache B．fallen ill C．caught a cold D．had a cough 需要一首歌《LEMON TREE》的英文歌词和翻译 求lemon tree英文版的歌词翻译 Lemon Tree歌词,对照翻译的? 《lemon tree》歌词翻译成中文 Lemon tree 是谁唱的?还有歌词,以及翻译, 25.-- ______?-I’ve got a headache and a cough.25.-- ______?-I’ve got a headache and a cough.A.What’s your trouble B.What’s wrong with it C.Can I help you D.How are yo I cough and have a headache.这句话对吗 i have a terrible cough,i have a cold ,i have a headache,i have a stomachache,为什么要有aI have a sore throat,为什么不是i have a throatache I'm ( ) and have ( ) ( ) headache.意思是：我感到很累，并且头疼得厉害。 二次函数y=ax²+bx+c,从图象中怎么判断a、b、c的范围或值,请详细说明. lemon tree -这个翻译成中文是什么意思? tree-lined是什么意思(中文翻译) The girl does enerything_____.she is a_____girl词根是care, Which floor does your best friend live on?She lives on the second floor .I live on the fifth floor.so she lives three floors ___ me and i live three floors ___ her.A.above,below B.over ,over C.above,over D.below,above 自行车中的原理 Does the write like Jiaozi when she is alittle girl?是啥米意思?请前辈指教! 谁帮我Damien Rice Rootless Tree这首歌中文的翻译（完整的 The little boy often cheers his mother up when she comes form work.(同义句）The little boy often * his mother *when she comes form work. There are some flowers ____ the pictureA.atB.inC.onD.by为什么是C而不是B? there is a dog and some flowers in the picture在这个句子中用is还是are 求歌词：lenmon tree What must be done if wildlife protection to be succeed?回答这个问题.用英语回答..一两句话 My father likes to eat many different kinds of food还是foods 呢 what must you do to be safe? 为什么能说many different kinds of food food不是不可数名词吗能用many修饰? What a pity that youth must be wasted on the 请具体说明一下中文的含义（修辞手法就不用说了,是paradox）, 是different kinds of food 还是different kinds of food s This store ___ food and vegetables.---Yes.You can___ many different kinds of food there. 小明身高142厘米,比小华矮a厘米,小华身高()厘米