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高中数学题 必修④三角函数——正弦函数、余弦函数如果偶函数y=f（x）有f（π+x）=f（x）（x∈R）,且当x∈[0,π/2]时,f（x）=cosx,则f（4）与f（2）的大小关系是_________请写出详细过程 when my father died...一道选择.when my father died,Jim was a real_____.He was a great brother.He held the whole family.A.hero B.owner C.support D.child我选C,我姐姐选A,请问到底谁是对的?或者两个都错了?正确答案应该是什 求解英语谜语 I was born bofore my father,I married my mother,but I died as a bachelor.这是我们外教出的.据说很难. 中国电信的英文怎么说?中国电信河南分公司怎么说?用英文的, 高二英语短文改错,9个错误.I was 14 years old when my father died.I was 14 years old when my father died.He was our mainly source of income.From then on,we have severe financial problems and struggled to pay for food and basic education.That 电信缴费系统的设计与实现用英文怎么说 中国人对’小悦悦事件‘事件怎么看需要大家的感想、 关于小悦悦的事件观点与事例 小悦悦事件给中国人的警示 how much does the watch cost?改为同义句 .how much does your new mp3 cost?同义句 1.the book does not cost much.it is________(expensive).2.nothing important.just that he is a bit_______(upset)about losing the game.3.lucy was born on the _____(two)day of may.4.how much do the _______（ticket）cost?5.the girl likes wearing_______ Since his father died three years ago,he ______(not,pay) any taxes.has not paidhad not paiddo not paydid not pay这些填法有何区别,有何不妥? 中国电信股份有限公司西安分公司政企客户部用英语怎么翻译啊? 中国电信科室牌翻译成英文拜托各位大神财务部、渠道部、政企部、开户室、总经理室、副总经理室、会议室、清欠办、网络部、各客部、男厕所、女厕所、娱乐室、机 房 中国电信集团公司河南省xx电信分公司英文标准翻译 在直角坐标系中,画了一条直线,应该写一般式还是直线的方程在那条直线那里? 平面坐标系中有点（3,4）以A为圆心,5为半径画圆,在同一坐标系中直线y=-x与⊙A的位置关系 How much does the computer______?A.cost B.pay C.spend D.take How much does the mobile phone ____?填cost还是spend还是pay还是take? How much does the football card()?a:pay,for.b:take.c:spend.d:cost. 翻译成英文,她经常穿长裤 这个黑色的长裤11美元吗? The population of Xi`an is smaller than that of Shanghai 那些长的黑色的长裤多少钱?翻译为英语 《阿甘正传》中美国人过新年时唱的是什么歌 求 阿甘正传中 所有英文歌曲名称! 四年级下册第七单元作文200字左右 致家长的一封新年祝福信孩子给父母的 写一篇英语新年祝福短文给我,要附带翻译, The American students gave me English lessons ( ) Chinese lessonsA.in exchange fo B.to exchange for C.in exchange with ·英语作文 The life of American students 帮我列个范文吧!