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22.解:(1)由[文]2=2c0sn6,[章]故p-2cos0-[来]4sin0,则p2[自]-2Cos0=4o[知]sin0,即x2+[嘛]y2-2x-4y=[答]0,即(x-1)2[案]+(y-2)2=5[网],故曲线C的参数方[文]程为1+√5cos[章]6分(0为参数)y[来]=2+sin 0x-√2t5分([自]2把人直线1y=3[知]x,故直线的极坐标[嘛]方程为=3(∈R)[答]而直线l6分3代入[案]P=20+4si0[网]6,得p=1+2/[文]3,故OM=1+2[章]5,7分把0=6代[来]入p=2c00+4[自]sn,得p=213[知],故|ONl=2+[嘛]③3,…因为∠MN[答]一一8分8+531[案]0分故△OMN的面[网]积为S=2|OM·[文]1ONsn6=4
【佳作展台】The[章] national flag-rais[来]ing ceremony on the themeof "We'll Make China Strong"took place in ourschool[自] on Mondaymor[知]ning.The moment all thestuden[嘛]ts and teachers gathered on the playgroun[答]d(快语从句)，t[案]he ceremony began..As[网] the music played,so[文]me students dressed in uniform(形[章]容词短语作后置定m[来]arched in with the flag.Then[自] we all sang ournation[知]al anthem as the flag rose slowly.Af[嘛]ter the flagwas raised,on[答]e student delivered[案] a speech titled "Iwill do my part to make China prosperou[网]s".I wasdeeply[文] impressed[章] by the activity.[来]As a Chinese,I[自]take great pride in my motherlan[知]d.Though shesuffer[嘛]ed a lot in the past(让步状语[答]从句)，China[案] hasbeen developin[网]g rapidly in the last few decades.I[文]t iseveryon[章]e's responsib[来]ility to make China strong andprospe[自]rous(It作形[知]式主语的句型).
