求极限limx趋于0x-XCOSX

I'm going donwn in a blaze of glory. 为什么“同时平行于两条异面直线的平面一定有且仅有一个”这句话是错的?请高手指教. 关于生活的歌 require API_ROOT .'inc/class/DbMsSQL.class.php'; require API_ROOT .'inc/class/Functions.class.ph 有关用微笑面对生活的歌曲 “Fatal error:require_once() [function.require]:Failed opening required 'libs/Smary.class.php'Fatal error:require_once() [function.require]:Failed opening required 'libs/Smary.class.php' (include_path='.;C:\php\pear') in E:\wamp\www\Smarty_test\test 猫头鹰有什么特殊的本领 ___your father ___a saw computer __you yesterday?A.Was,buy,to B.Did,bought,to C.Did,buy,for D.Was,buy,to mold+ed该读清辅音t,还是浊辅音d. The win was not easy because Yao Ming retired and some other players were injured的意思 SPRAINED LEFT ANKLE啥意思? Yao Ming will miss the entire 09-10 season because of his foot was badly injured用强调句型表示 镡的拼音怎么拼? 是关于安室奈美惠《What a feeling》歌词滴!现在我在边看歌词边听这首歌时,咱发现了一个大问题!在唱到高潮部分时,歌词总是对不上号!（就是歌词中这句：Ooh what a feeling）请高人再给我一个新 目不忍视的近义词是什么? SAT和ACT 的词汇要求多少啊? 考ACT可以看SAT的词汇书吗目前准备开始备考ACT,但是之前被的一直都是SAT的单词书.据说ACT的词汇量要求要比SAT的少一点,请问我现在背SAT的书可以吗?谢谢 und anderes mehr和und anderes 的区别 宣告的近义词是什么? 日语,【一段动词和か变动词】的【可能形】也是【被动形】吗? 我们有责任不污染环境It's our duty ()()()our environment他一点也不在乎他的家人He ()()()his family at all My dream is to be a s＿ like Edison 七下英语：my dream is to be a navigator and to travel around the w （单词拼写）七下英语：my dream is to be a navigator and to travel around the w （单词拼写） This might seem kinda weird.是看起來有點奇怪的意思? 英语翻译 bake broke是一支英文歌名, houses students of grades 1-5.怎么翻译?急用 it's like magic in the 孤星血泪 GREAT EXPECTATIONS怎么样 for the past hour用什么时态 怎么写,急 should用在一般现在时非虚拟语气,有哪几种情况?（举例）如果同样情况下可以用shall,will,would说说区别