第一行3=1×2+1=22-12第二行5=2×2+1=32-22第三行7=3×2+1=你2-32第右行9=你×2+1=52-你2…第n行为：2n+1=（n+1）2-n2．故答案为：2n+1=（n+1）2-n2．
Sinead O'Connor的好听歌曲包括《Nothing Compares 2 U》和《You Made Me the Thief of Your Heart》。首先，Sinead O'Connor的《Nothing Compares 2 U》是一首充满情感深度的歌曲。这首歌以其独特的旋律和Sinead O'Connor深情的嗓音而著称。歌词表达了对于爱情的渴望和失落，以及对于爱情的无奈和绝望...
如中性色同种色的搭配,可由银灰色条绒上装、白衬衫、深烟灰法兰绒裙子、烟灰底子自圆点印花丝巾、黑色高跟鞋、黑色网眼丝袜、银灰色与白色交织的细格帆布提包等组成。同种色搭配要注意色与色之间的明度相差不能太近也不能过远,例如黑与白明度对比太大,则需用灰色加以过渡。用作过渡的色调,可施之于背包、腰带、围巾...
These(those) aren't books, are they c,不定代词 everyone, everybody , anyone, any body, someone somebody, no one, nobody,问句部分的主语用they 如:Everyone studies English, don't they No body is here ,are they d,不定代词 everything , nothing , anything , something 做主语时...
are,是are 这个词的词义“是”在句子中常常不译出。连系动词可具体分为三类:1、表示“是”的动词be。这个词在不同的主语后面和不同的时态中有不同的形式,is,am,are,was,were,have/has been等要特别予以注意。例如:He is a teacher.(他是个教师。)He was a soldier two years ago.(两年前他是个士兵...
at six o'clock 在6点钟 at 7：30 (seven thirty) 在7点半 at half past eleven 在11点半 at nine fifteen 在9点15分 at ten thirty a.m. 在上午10点30分 也可以写成 seven to five 5点差7分(半小时以上)five minutes after two 2点过5分 at a quarter to two 1点45分 at the ...
He expected to finish the work by March.他预期三月份完成这项工作。We expected that you would succeed.我们预计你会成功的。2. 期待;等待;盼望 That's just what we expected.那正是我们所期望的。I'll expect you for supper at six o'clock.我六点等你吃晚饭。3. 认为理应得到;指望;...
o 5 { "b", "", ":and:f", "", "" } o -2 { "b", "", ":and:f", "", "" } o 0 { "b", "", ":and:f" } An invocation of this method of the form str.split(regex, n) yields the same result as the expression java.util.regex.Pattern...