合肥市包河区2023-2024学年九年级第二学期教学质量检测(三)数学.考卷答案

合肥市包河区2023-2024学年九年级第二学期教学质量检测(三)数学.考卷答案试卷答案,我们目前收集并整理关于合肥市包河区2023-2024学年九年级第二学期教学质量检测(三)数学.考卷答案得系列试题及其答案，更多试题答案请关注本网站↓↓↓

合肥市包河区2023-2024学年九年级第二学期教学质量检测(三)数学.考卷答案试卷答案

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13.Whatdoesthemandoprobably?A.He'sapoliceman.B.He'sagardener.C.He'sajournalist.听第9段材料，回答第14至16题

14.Whatistheprobablerelationshipbetweenthespeakers?A.Zookeeperandassistant.B.Tourguideandvisitor.C.Interviewerandjobhunter.15.WhatdidthemandoinAfrica?A.Hevolunteeredatacharity.B.Hetaughtatauniversity.C.Hetraveledaroundthecountry.16.Howdoesthewomanfeelabouttheman?A.Impatient.B.Sympathetic.C.Satisfied.听第10段材料，回答第17至20题

17.Whydoesthespeakerusetheheadphonetocommunicatewiththelisteners?A.Itiscomfortabletouse.B.Thesoundoftheplane'sengineisloud.C.Thelistenerstalkaloud.18.Whatisthecauseofthedarksky?A.Thenighttime.B.Theblacksmoke.C.Thethickclouds.19.Whichsideoftheislandaretheforestsin?A.Thewestside.B.Thesouthside.C.Thenorthside.20.Whatisthetalkmainlyabout?A.Learningaboutavolcano.B.Havingarideinaplane.C.Takingphotosofforests.3

10.在倾角=37^的光滑导轨的上端接入一个电动势E=3V,,内阻r=0.5Ω的电源,滑轨间距L=50cm,,将一个质量m=40g,,电阻R=1Ω的金属棒水平放置在滑轨上。若导轨所在空间加一匀强磁场,当闭合开关S后,金属棒刚好静止在滑轨上,如图所示。(已知37^=0.6,37^=0.8,g=10m/s^2)则下列说法正确的是A.磁感应强度有最小值为0.24T,方向垂直导轨平面向下B.磁感应强度有最大值0.4T,方向水平向右C.磁感应强度有可能为0.3T,方向竖直向下D.磁感应强度有可能为0.4T,方向水平向左