1.a bief introduction to the city2.Fifth Avenue3.The plane will take 4.look up the phone number in the Yellow Pages5.natural killers6.The Great Wall shows the wisdom of the Chinese people7.be in favour of8.The electricity went 快

1.a bief introduction to the city2.Fifth Avenue3.The plane will take 4.look up the phone number in the Yellow Pages5.natural killers6.The Great Wall shows the wisdom of the Chinese people7.be in favour of8.The electricity went 快 Who is your favorite character in Chinese myths/legends/fairy tales?Why?(Make a brief introductio请帮忙做个,英语对话~ 写一段英语对话.有话题.Which means of transportation (bike,bus,ship,taxi,etc.) do you like best and why?Can you give a brief introductio to a tourist attraction in your hometown?Which trip you had before struck you as most impressive and why 请懂越南语高手翻译； yeu mot nguoi cung kho.quen mot nguoi lai cang kho hon ...em bief phai lam sao daykhi nhin anh bang nhung anh mat a与-a的大小关系有三种：1.a>-a；2.a=-a；3.a 计算：a²/a-1-a-1. 1.a 1.a 化简a(a+1)/1+(a+1)(a+2)/1.+(a+2009)(a+2010)/1 请你填出题中a所表示的数,使等式成立.1.a-a=a×a a=（ ）2.a×a=a÷a a=( ）3.a+a=a÷a a=( )4.a+a=a×a a=( ) 请填出题中A表示的数,使等式成立1.A-A=A*A A=( ) 2.A*A=A/A A=( ) 3.A+A=A/A A=( )4.A+A=A*A A=( )1/2表示啥意思.2不对吧 请填出题中a所表示的数,使等式成立1.a－a＝a×a a＝( ) 2.a×a＝a÷a a＝( ) 3.a+a＝a÷a a＝（ ) 4.a＋a＝a×a a＝( ) 根据乘方的意义:a的平方=a×a,a的立方=a×a×a.1.计算:a的平方×a的立方= 1.( -2/2a+3) + (3/3-2a)+[ 2a+15/ (2a-3)(2a+3)]2.[(a+2a^2-2a) - (a-1/a^2-4a+4)] ÷ 4-a/a 如果根号a三次方+a平方等于-a根号a+1.那么a的取值是 化简 (2a²-5a)-2(3a-5+a²),a=1... 先化简,在求值：(a-2) (a+2)-a (a-2),其中a=-1.全部 化简 (2a²-5a)-2(3a-5+a²),其中a=1...