初二复习资料

已知点P为直线x-y+2=0上的动点,圆O的方程为x²+y²=1,圆C的方程为(x-2)²＋（y＋2）²=1.1.过P引圆O的两条切线,切点分别为A、B,求证；直线AB过定点.2.过P引圆O的两条切线,切点分别为A、B, Make gold lace是啥意思? guipure "bar" lace just Lace wedding什么意思 pink lace stamp 是什么意思 美汁源C粒柠檬有毒么?同是美之源果粒橙厂家的.听说美之源果粒橙有毒,那么这个C粒柠檬可以喝么? 果粒橙真的有毒吗 听说果粒橙有毒,是真的吗? 不织布,英文怎么说 A child is usually like ____ or ____ of his parents.A.either,bothB.any,allC.either,allD.one,all选A,请帮我分析一下（特别是为什么B不可以）, 叶墨绿色、背面有紫色条状斑纹、叶边缘为锯齿状、有气根、落叶生根,请帮忙判断这是什么植物、属哪一科. Liu Mei,the reporter __ CCTV,is a kind girl.为什么正确答案是A,而不能是其他呢?求详解.A.fromB.inC.toD.after A:Tom failed the final exam.B:I don't think he could pass it at all._____I nearly never saw him working hard._____处是填 in all 还是 after all? A：Liu Mei ____________________B：Certainly Iknow about her Zhang Yining is my favorite sports starA:____________________B:She was born in October 1982A:________________B:In beijingA:Oh,I have two tickets for match next sunday________________?B:Yes He never has lunch at school ,right?____He has it at hom .求选项.A.Yes,he does B.No,he doesn't C.yes ,never D.I don't know Please describe one of the most difficult and demanding tasks you have had in university.What did you do to overcome it? 学霸指导 翻译并写一下答案,爱你! 英文小作 describe one of your neighbors1 Where does he/she live?2 How did you get to know him/her?3 Whether you often see him/her?4 why he/she is a good neighbor?就是把上面四个要求回答出来即可 最好不要一句一句的. 工作什么难以言表 一个无盖的长方体水桶,长和宽都是3分米,水桶高5分米.这个水桶占地面积是多少平方 according to the people at the post office.according to the people at the post office,and now,I’m asking for them to find it for me!So the assured me that it is most likely locked up and sitting they are going to find it and make sure that it is se 一个无盖的长方体水桶,长和宽都是3分米,水桶高5分米.这个水桶占地面积是多少平方分米? 给一个长5分米,宽3分米,高4分米的无盖长方体铁皮水桶里,外涂漆,涂漆面积是多少 一个长方体木块长5分米,宽4分米,要把它的表面涂上油漆,涂油漆的面积 The gift maybe d_____ according to the people you visit不好意思哈，may be是分开的哈…… 周处是如何危害乡里的?想象.. 周处 1乡里人为什么“更相庆” 作者这样写的目的是什么?2从全文看周处是个怎样的人?他的可贵之处是?你从中得到了什么启示? 语文阅读短文：周晓枫《燕子》答案