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数学训练题(5--8)1.如图抛物线y=x2bxc的顶点为D(﹣1﹣4)与y轴交于点C(0﹣3)与x轴交于AB两点(点A在点B的左侧).(1)求抛物线的解析式(2)连接ACCDAD试证明△ACD为直角三角形(3)若点E在抛物线的对称轴上抛物线上是否存在点F使以ABEF为顶点的的四边形为平行四边形若存在求出所有满足条件的点F的坐标若不存在请说明理由.2.已知直线y=kx3(k<0)分别交x轴y轴于A
小套题训练一语言文字运用(12分每小题3分)1.下列词语中的字形和加点字的读音全都正确的一组是( )A.坐镇(zhèn) 糟蹋(tā) 珊珊来迟(shān) 引吭高歌(háng) B.丰腴(yú) 伛偻(lǚ) 所向披靡(mǐ) 义愤填赝(yīng)C.遐想(xiá) 振撼(hàn) 食不果腹(fù) 久假不归(jiǎ)
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听力题(共1题共3.0分)1 Questions 28-30 Which opinion does each person express about Box Tel Choose your answers from the box and write the letters A-F next to questions 28-30. ??Q2.MP3A its workers are mo
阅读题(共3题共3.0分)Questions 11-13READING PASSAGE 1Part One A Air pollution is increasingly bing the focus of government and citizen concern around the globe. From Mexico City and New York to Singapore
听力题(共1题共10.0分)1 Questions 1-10plete the form below. Write NO MORE THAN THREE WORDS ANDOR NUMBERS for each answer. ??Q2.MP3HOST FAMILY APPLICANT Example Answer Name: Jenny Chan Present address: Sea
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