郑仁强环球雅思

高中英语题,求高人解答（ ）he was ill Iwas expected to take his place greatly surprise me,for I didn't have much work experience.A.If B.If that C.That D.That if望高人能写下详解不好意思，开始是 was ill I wa 明什么什么断 成语 求曲线y=-x^2+1在点(1,0)处的切线方程和法线方程 成语凭什么什么断 已知0 已知tanx=2,求①2/3sinx+1/4cosx的值②求2sinx-sinxcosx+cosx的值拜托各位大神 下面的问题,用英语回答 回答以下几个问题,用英语,1.in order to have plenty of energy in the future ,what shall we do with the energy?2.what is computer what are the classification of computer?what is the working process of a computer?what are the functions of a co 请帮忙用英文回答下面的几个问题,狂谢.1.Please give an example of a time when you developed a new or different solution to a problem.Why did you think the problem needed a new solution?How did you develop the new solution?What feedback 解不等式lx-2l+lx+3l≥4 解不等式lx-2l-lx+3l≥2 lx一3l一lx+2l>3解不等式 什么断什么连成语 成语 ()连不断求成语 已知tanx=3,那么sinxcosx=? 第一个是藏第四个是掉的成语 填写成语：藏（ ）（ ）掉 方程组x+y=m.xy=n的两组解为x1=a1,y1=b1,x2=a2,y2=b2,则a1a2-b1b2的绝对值是多少?有个答案是这样的：分别代入得：a1+b1=mm,a1b1=n;a2+b2=m,a2b2=n;两式联立,得 a1=b2,a2=b1 或 a2=a1,b2=b1(因为两组,后不成立）所以 a1 若方程{a1+b1y=c1 a2+b2y=c2的解是{x=6 y=4,求方程组{3a1+2b1 y=5c1 3a2+2b2 y=5c2 x+y+(x+y)2*2.4=88 四字成语?不断 复合函数求导. 补充成语；连（ ）不断 1.5 ,1,0.75,0.06,( )( ) ( )3分之一( )找规侓 复合函数求导题看不懂,200分求教!主要是倒数第二行看不懂现在我还是不明白的就是为什么f(x,f(x,x))对f(x,x)的偏导数和f(x,x)对x的偏导数都可以表示成同一个符号f'2？还有为什么f'2是f对y 连接不断 说一成语 求数学帝解释为什么这个是复合导数要乘以后面部分 后面部分又是谁的导数 反函数求导问题,有一处看不懂.望大神解答? 无意识和潜意识有什么区别么?讲得简单一点 英语回答啊.快在公共场合经常看到的标志,1*ENTRANCE2PO BOX3*KEEP OFF THE GRASS4*WET PAINT5*NO PARKING I根据句意,用适当的介词填空1 BEN said they were having a party ＿ Lana ＿Friday night2 The teacher asked us to bring the new books ＿the classroom3 I argued ＿ my best friend ,but I am not mad ＿ him anymore4 Last Sunday was an exciti 已知直线L1与L2相交于点A,L1的函数表达式为:y=2x+3,点A的横坐标是-1,且L2与y轴交