广西省桂林市中山中学2018-2019初一下学期期中考试生物试卷
※题型：单选题※知识点：单选题※试题难度：中等<br>青春期男孩和女孩生理心理上发生了明显的变化,你认为错误的处理方法是( )<br>A.生活中存在的矛盾心理,主动与老师家长交流<br>B.正确认识遗精或月经现象<br>C.内心世界逐渐复杂,有的事情不想与家长交流<br>D.性知识是一类科学知识,不可回避<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/7e4f9a89b0b744199dadcfcf6874d1e5/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/7c7837546cd24ed0842e7c655bbc920a/97292CF36D362C65AE024290ADB612E2.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>淀粉、蛋白质、脂肪分别被分解成____后,人体才能吸收。( )<br>A.麦芽糖、脂肪、无机盐<br>B.葡萄糖、氨基酸、甘油和脂肪酸<br>C.二氧化碳、水、无机盐和维生素<br>D.淀粉、蛋白质、脂肪<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/5a823cea98dc4004a278b355758a4e8c/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/3deafc50244f4f7dabe429d994bc35ee/9ED70F0A9086B8C443B0DF6901520485.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>进化论者认为人类和现代类人猿的共同祖先是( )<br>A.森林古猿 B.长臂猿 C.大猩猩 D.黑猩猩<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/f1e7d7745e4547cb98e7e1f6d55fb441/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/716cfb56e13b40a2a6ee1dd4fd743171/1996750612B3F84B8303262B3523F538.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>精卵结合的部位以及人体胚胎在母体内发育的场所是( )<br>A.子房、卵巢 B.阴道、子宫<br>C.输卵管、卵巢 D.输卵管、子宫<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/f6d3b516220e4e8d9317c7d255eb9e76/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/84053f38b4454bc592b838a8abb769fe/8845389858EAEAE4DEE0EF9CAB416800.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>男性的生殖器官中,能分泌雄性激素的是( )<br>A.附睾 B.输精管 C.精囊腺 D.睾丸<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2014/e6aaf712d65d4825b6e89affded4ca6b/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2014/9994cdc5865c493dbb9a5885f0ce8062/2C50891638E0EE46002432063A09A198.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列生理现象,它们发生的顺序排列正确的是( )<br>A.分娩、受精、怀孕 B.怀孕、受精、分娩<br>C.受精、分娩、怀孕 D.受精、怀孕、分娩<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/6579befcca4e4ff8aa66fe729f8b6bdf/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/30f0523b3a6041fa88d0376724bd696a/C84747B25B69B715F804EC743D7EB6FA.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>人的胚胎在发育过程中,怎样获得营养和排出废物?( )<br>A.通过卵黄 B.通过自己的呼吸系统和消化系统<br>C.通过泌尿系统 D.通过脐带和胎盘<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/51aec0cf8b3641a3a4b5a737f94e5443/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/1269b25d1bf34a00984df3cd49bfab1e/7A096381678339C877490C12F9888EEA.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>受到刺激后能够产生兴奋和传导兴奋的组织是( )<br>A.上皮组织 B.肌肉组织 C.神经组织 D.结缔组织<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/2d5e4594828d4f68bc8936e8820bfc99/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/2ce5bc8bac0e433b94eb0446ace108e8/A6D53A903496DC4C27146F02A15B719E.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>某战士血型为B型,在抢险救灾中受伤,失血过多需要输血,则应先考虑为他输( )<br>A.O型血 B.A型血 C.B型血 D.AB型血<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/f93caaa8e14841d6b3a8f6efb3602fe5/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/66aac5aa9c7746db8d7d081407f7c602/6560D06835B316B6D53A32C944FBFA8B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>关于心脏的说法,以下正确的是( )<br>A.心脏全部由肌肉组织构成<br>B.心肌壁最厚的是右心房<br>C.心脏中的瓣膜可防止血液倒流<br>D.心脏四个腔内流的都是动脉血<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/1a53667065744ad18239380608654240/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/f87726587376469caa5b168240b07f29/333B433BB7C9486D95CAA716D686B2DA.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图是显微镜下观察到的人血涂片视野,下列相关表述不正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/7/25/26B1CAE539D6C89040ED0532B8EC1087.png"><br>A.③数量最多,其内富含含铁的血红蛋白<br>B.①个体最大,能够吞噬病菌并保护人体<br>C.②个体最小,具止血和加速凝血的作用<br>D.血液分层后,①②③均位于试管的下层<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/663f6bad98454698a1dedfc244cdd6c5/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/87a2c81a5bb2471f91b8a72fc159e06b/CA4C58B674E7804FB2052E9475959CA3.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列说法正确的是( )<br>A.动脉管壁厚,弹性大,血流速度快,把血液送回心脏<br>B.静脉血流速度慢.血液由主干流向分支<br>C.管内红细胞呈单行通过的血管是毛细血管<br>D.人体患急性炎症时验血,往往会发现红细胞增多,因为红细胞中含有血红蛋白<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/f9c176ecd6334cbbb6196eef4f99d7f1/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/f42c1f588e4546c7ae47504980105351/41F6AF6345281983DEFA8E2C90293943.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>成年人的血压正常值是12.0~18.7/8.0~12.0KPa,李大爷最近血压常在19.5/13.6KPa上下波动,则李大爷可能患有( )<br>A.心脏病 B.低血压 C.贫血 D.高血压<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/5c1f1b4cc55e4bcfbc4296c08c4375e2/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/a78fbb61751346d2ab215fc72f6f09f6/5C679C2A99EFE55313EE1AF761D30189.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>四肢的静脉血管内有静脉瓣,其作用是( )<br>A.推动血液前进 B.防止血管塌陷<br>C.防止血液倒流 D.加大管壁弹性<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/97db45c7c2b1453eb9183c350e2107aa/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/3865e2314ed34b5093c3704e917b7708/2188A1E39609F4BF6B7F81443578B813.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列各项中流动脉血的是( )<br>①左心房 ②左心室 ③右心房 ④右心室 ⑤主动脉 ⑥肺动脉 ⑦上、下腔静脉 ⑧肺静脉.A.①②⑤⑧ B.③④⑥⑦ C.①②⑤⑥ D.③④⑦⑧<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/73f7ab99597d4a0abe7294ac84bec033/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/c8b5e0dcba5b4f7baf9b4250d16f5800/EFF58DBAC1EC859E60C2EC498F549FCB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>血液循环的动力器官是( )<br>A.肺 B.胃 C.心脏 D.肝脏<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/2d402076cbc64f42b1d1b78a91af7223/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/fa18c545737c45a1a49d161bd929d32b/6D437D484DC9907134A42139D5408105.png"><br><br>※题型：判断题※知识点：判断题※试题难度：中等<br>心脏的收缩和舒张,使得血液在血管中不停的流动。(<br> <br>)<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/98851f197f2648838435ae0c986315f0/1571767E7D00EDF0367E5DB18F5CF334.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/63561ba528d1420184d67619dc3d19f0/7B12937F5AABB2E114B284C5EA7654A1.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>只允许红细胞单行通过的血管是( )<br>A.动脉 B.小静脉 C.大静脉 D.毛细血管<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/75b9ed72891c47a8b76f185799ac5e03/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/4a401a5e25204ad79bf07f8af1973915/46094EB24F57F257F63B3F365A65A7F0.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>连通于最小的动脉与静脉之间的血管是( )<br>A.动脉 B.静脉 C.毛细血管 D.心脏<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/47cb0234824e4a8888545b57258561b7/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/229ddfae674448e6bb2ecc60d615832d/39703DB5988DB995CE2B262EFD49050D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>红细胞的功能是:( )<br>A.运输养料 B.运输废物<br>C.只运输氧气 D.运输氧气和部分二氧化碳<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/ff65ab89858143ab993e4a675141d465/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/85a6f87b2dcf4c4f8cbd579eb532f74c/9493D19D62D0D8D84043B78A54426B28.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>血液中能释放相关物质使血液凝固的成分是( )<br>A.血小板 B.白细胞 C.血浆 D.红细胞<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/12d3b27e97e64bd8bf2d9a75af25f55b/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/1822f6add0b04f39a447487e5b0bfd12/D88F8E7B01E657422EB0B42D56092CA4.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>小明患了急性扁桃体炎,验血时发现______增多了.( )<br>A.淋巴细胞 B.白细胞 C.血小板 D.红细胞<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/996c1b8be7be42b9aa3e3e112b8c62b9/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/3eb0864617ce48629d8b5091561c1017/D432440A2C7F29C49CFA1BE72EE2B064.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如果O型血的人受伤需要输血,为了防止发生凝聚反应,所输血的血型应该为( )<br>A.A型血 B.B型血 C.O型血 D.AB型血<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/12b7f43d1cd14e9ebff23b66d753d3e9/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/54018e57488e4ed9934d630f3fed5c91/06DA406A216C50D7A0FF61074B3BFFDE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>成人在安静状态下的平均心率是( )<br>A.100次/分 B.50次/分 C.75次/分 D.58次/分<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/1bd0930ed189452589b85ef6110a17a7/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/6cc3ceaf936643c3bb63e366447459bc/7C845BEFAC4379511CCC43436F4262E0.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>以下有关血液的说法,正确的是( )<br>A.O型血的病人可以接受AB型的血<br>B.血液中血浆约占25%,呈淡黄色、半透明状<br>C.人体出现炎症时血液中白细胞会比红细胞多<br>D.一个健康成年人一次可以献血200~300 mL<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/b7f84f9002df421bbbf204e524fcaea1/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/7129782950de4ba7bd4681ffbb72d2cf/018E144C6878EEA913E93A7B66168F9D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>一条回心血管内流动的是动脉血,则该血管是( )<br>A.上腔静脉 B.肺静脉 C.主动脉 D.肺动脉<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/1737c1b91840453bb1a6320c1b3c3d78/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/256d193e76ba4117bb369b563e4508dd/394E4A7A56EB8B5A07033BAEEC1F9A91.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>血液在流经肺后,血液发生的变化是( )<br>A.氧气增多二氧化碳减少的静脉血<br>B.氧气增多二氧化碳减少的动脉血<br>C.氧气减少二氧化碳增多的静脉血<br>D.氧气减少二氧化碳增多的动脉血<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/4aaa971ccb9140559f0bc9a01ff60062/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/cbf5e48fb61c4ca09156c2d83f03f000/B9F45F11B480836B71666232A0A58704.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>有关动脉血的叙述中正确的是( )<br>A.动脉内流动的血液<br>B.含养料丰富的血液<br>C.含氧丰富,颜色鲜红的血液<br>D.肺动脉里流动的血液<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/916811b144f94cc697606a75ce194497/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/8098189130af478c8513811b49aee69d/7352C88537A39878036F0DFF3917466D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>将血液循环中的两条路线(循环途径)连在一起的器官是( )<br>A.肺 B.心脏 C.小动脉 D.小静脉<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/6e7aea4484534eada0e186a313d441ae/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/975d841be1534111a9ac7e8f6282b259/B6D09ACC448449C94060D13A3BB2A2CB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>入冬以来,通州连续多日出现雾霾天气,致使空气中PM2.5严重超标,部分PM2.5颗粒能通过呼吸道和肺进入血液,危害人体健康。PM2.5颗粒经过鼻、咽、喉以后,经过的结构依次是( )<br>A.气管、肺泡、支气管 B.支气管、肺泡、气管<br>C.气管、支气管、肺泡 D.肺泡、支气管、气管<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/1eccb9359b514cf2a2fde964945a8dc6/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/6624e50ea44b4f0fb85dd2e0585ac1d7/1A663F63DF48EF7CFFB90CE55661C16C.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>人在吞咽时,能够遮住喉的入口,防止食物进入气管的结构是( )<br>A.喉结 B.会厌软骨 C.喉部肌肉 D.食道肌肉<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/de362e6f594f45ee9829d33b0697ab92/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/9fb5484887994ade9c429306d2baf1a0/D57B96638BC7834F7A68E3CF4289ADC6.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图是某人在1个标准大气压下的一次平静呼吸中,肺内气压的变化曲线。下列有关该曲线的解释正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/7/25/68EA952EDC3226079C5ED3FB3D215F0C.png"><br>A.曲线ABC表示呼气过程<br>B.曲线CDE表示吸气过程<br>C.曲线ABC段肺处于缩小状态<br>D.曲线CDE段表示呼吸肌处于舒张状态<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/bed3d2d52cfc436097789f55485b30aa/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/2c7486a51b284d01b494954ebb9c3f66/7F3D7F8675531D0EB46C9120D147F6F0.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>人体主要的呼吸肌是( )<br>A.肋间肌和膈肌 B.腹部肌肉<br>C.胸大肌 D.背部肌肉<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/5782607d4cde4d44b4d631bd3d694534/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/e716d7ad79d640b3b08e20da9b729b6a/394BC5A4BB796943C1BD4E8C38F21666.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br> 人体呼出的气体与外界环境中的气体的区别是( )<br>A.呼出的气体中氧气含量减少,二氧化碳含量增多<br>B.呼出的气体中氧气含量增多,二氧化碳含量减少<br>C.呼出的气体中氧气和二氧化碳的含量都增多<br>D.呼出的气体中氧气和二氧化碳的含量都减少<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/41e7fc61a663493287bb5e5a3ea97925/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/8805106953ff4c01a763f3f4b16eb455/C85B36D02E232F4C4095DBC7C36A50B0.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>肺泡与血液进行的气体交换及血液与组织细胞进行的气体交换的原理是( )<br>A.气体的呼吸作用 B.气体的扩散作用<br>C.呼吸运动 D.自由的交换<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/a815836ea1824c8a89aafefa1d6e6fd2/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/008e452d179e4de0b3a126fc89ef2ca4/F67DBB9889B285D7398324753AC5D990.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>我们每天要呼吸两万多次,呼吸时吸入的氧气进入人体,最终要到达( )<br>A.心脏 B.肺 C.血液 D.细胞<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/b78e322bc5cf4a8b99f21c817ab876d9/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/f524128f6438473a8bf06c86cc78b1e5/F2A6F3AE0485487B23D3357FBFF9A49B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列人员中,呼吸系统疾病发病率最低的是( )<br>A.工业区居民 B.被动吸烟者 C.交通警察 D.园林工人<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2014/639fb7b635fd46c1ae7e21c8657e855e/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2014/207515dc154d41aab98d523fcad88569/1CA6314681398A09E70C8B298A320C08.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>小军患了佝偻病、夜盲症,他多喝牛奶,还应该补充什么,食物中富含哪种维生素( )<br>A.维生素A和维生素D B.维生素C和维生素B<sub>1</sub><br>C.维生素D和维生素B<sub>1</sub> D.维生素D和维生素C<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/1047b13a7eee475a926256f2ddebf747/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/4acc58d5a4ce4007824379a643e40d2b/A09DDDB5B3FF79A4B55E430BAC673358.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>我为妈妈设计了一份午餐食谱:米饭、糖醋排骨、烧腐竹.这个食谱不够全面,加上下列哪种食物后可以让这份食谱更加合理( )<br>A.拌菠菜 B.牛奶 C.排骨汤 D.小米粥<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/e7554658bfcc4d6e9b4db0ba893c051c/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/ccfc0943fa544094af0c0273d88f809f/B8A36F402D886691C7C26050700EA896.png"><br><br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>如图模拟的是呼吸时膈肌的运动情况,请根据图回答下列问题:<br><img src="https://picture2.zhihuicn.com/testImage/2/2019/7/25/7750AC7C459354E838D066903A05CBE6.png"><br>1.图中气球代表的是。<br>2.如图乙所示,用手下拉橡皮膜时表示气的过程.在人体内,此过程进行时,橡皮膜代表的结构是,其顶部下降,肺内的气体压力相应(增大或减小),于是气体就被吸入。<br>3.人体通过吸气和呼气实现了肺与的气体交换。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/e4ccba7ed7334ef2940fda4ba6401010/3BEC889C5BE0E0313CA43AF6969EB46D.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/086b45a33aa241e0a7a8699f59fbae0e/7C9EF24C4723B44495F9BDB58F70F7CD.png"><br><br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>下图为“探究馒头在口腔中的变化”的实验设计示意图,六支(<br>-<br>)试管均置于<br>℃温水中十分钟,<br>据此请<br>分析回答:<br><img src="https://picture2.zhihuicn.com/testImage/2/2019/7/25/3E86FCA4C1C77A1C62663DD330E8AE3D.png"><br>1.将六支试管置于37℃温水中的目的是。<br>2.将六支试管置于37℃温水中十分钟后,向每支试管内滴加两滴,摇匀,观察实验现象。滴加上述液体是为了检验馒头中的是否被分解。<br>3.A组的实验变量是,实验现象是。<br>4.根据B组实验装置,可知探究的问题是。<br>5.C组的实验变量是,实验现象是。<br>6.上述实验表明,馒头在口腔中变甜与三个条件有关,其中使馒头变甜的决定性条件——消化酶是,产生的甜昧物质是,该消化过程属于(填“物理性”或“化学性”)消化。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/5ac00c622d3b4027a613597e32d374d6/547A75E44CD12B6048B7D8A546F959B5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/14bac0e3d0f1435181cd6164ff6d24e6/6FCBC1050EC35780F045BB7B98515FCF.png"><br><br>
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