首页 › 专项卷 › 黑龙江省龙东地区2021届中考生物试卷

admins 发表于 2021-8-18 22:50:58

黑龙江省龙东地区2021届中考生物试卷

※题型：单选题※知识点：单选题※试题难度：中等<br>校园里的丁香发了新芽,开出了美丽的花朵。这体现的生物特征是(&nbsp;)<br>A.需要营养&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.遗传变异<br>C.生长繁殖&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.能对外界刺激作出反应<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/4f218d02c0184b95ad7c08423643ab49/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>枯叶蝶落在树枝上,像枯树叶一样难以辨认。这一现象体现了(&nbsp;)<br>A.生物能适应环境&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.生物能影响环境<br>C.环境能影响生物&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.生物能改变环境<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/5df1c2dedb2341378319f538001d3809/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列能正确表示食物链的是(&nbsp;)<br>A.阳光→植物→鼠→蛇→鹰<br>B.水草→草鱼→水鸟→细菌<br>C.土壤→草→羊→狼<br>D.草→食草昆虫→青蛙→蛇→鹰<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/cfd8e32b65cc49bcb542c623d2958e58/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>炎热的夏季,绿豆常作为解暑的最佳食材,绿豆在植物体结构层次上属于(&nbsp;)<br>A.组织&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.器官&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.系统&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.植物体<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/c08d509e3c93462aace73ab21d13c693/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下图是动植物细胞结构示意图,下列说法正确的是(&nbsp;)<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/9/8C29769228EC2353F28E1959D5BF7C39.png"><br>A.③是细胞的动力车间&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.②能控制物质的进出<br>C.⑤里面含有遗传物质&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.⑦将光能转变成化学能<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/92d5a07aecc849bbbc2f56c596694f6c/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>霜降之后天气越来越冷,被霜打过的柿子味道更甜。这体现了哪种非生物因素对生物的影响(&nbsp;)<br>A.温度&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.阳光&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.水&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.土壤<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/13dda5483bab46b385883586c5a541bd/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列能进行光合作用的单细胞生物是(&nbsp;)<br>A.酵母菌&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.衣藻&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.草履虫&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.大肠杆菌<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/5c7a36f611b744d698423778ddfe8c61/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：容易<br>玻片上写有字母“qb”,在显微镜视野中看到的物像是(&nbsp;)<br>A.bq&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.dp&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.pd&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.qb<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/37521fa046e24d988b86b3ff23bdcbaa/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>用显微镜观察人的口腔上皮细胞临时装片时,如果物像不清晰应调节(&nbsp;)<br>A.转换器&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.遮光器&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.粗准焦螺旋&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.细准焦螺旋<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/d11c60190a2d4547b0e01b44e7e1bfb7/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/cf055817fbbb462395caf945517cd5ee/4589D958CDB5026E5B25357C4E699F52.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>图中代表细胞分化过程的是(&nbsp;)<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/9/E733C3725D9409D848B2786205A9BBC7.png"><br>A.a过程&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.b过程&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.c过程&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.d过程<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/0c22e6b382d649c2a5917e1085eb6cd7/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列关于藻类、苔藓和蕨类植物的描述,正确的是(&nbsp;)<br>A.肾蕨的根、茎、叶中没有输导组织<br>B.葫芦藓靠根吸收水和无机盐<br>C.卷柏不能产生种子<br>D.海带靠叶进行光合作用<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/7ac33b4c997845a0b689df8b08707f10/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列反射中,属于复杂反射的是(&nbsp;)<br>A.膝跳反射&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.缩手反射<br>C.吃梅子分泌唾液&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.看小说感动流泪<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/277c2fe4553b4cd3bdb71f1a8ae7bb80/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>银杏被称为植物界中的“活化石”,它属于(&nbsp;)<br>A.裸子植物&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.被子植物&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.蕨类植物&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.藻类植物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/6a1c12a3f12741d2a9947aca493643fd/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>黑龙江省是玉米的主产地。玉米种子中,营养物质主要储藏在(&nbsp;)<br>A.胚根&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.胚芽&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.胚乳&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.子叶<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2014/0489b8197e194f0db8bf0d86aaf9ef37/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2014/7a4a2774fd0941429d6405f1a452f859/7644A0CD9FC456970E9D572D7C8FC7B4.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列各组生物之间属于竞争关系的是(&nbsp;)<br>A.豆科植物和根瘤菌&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.水稻和杂草<br>C.猎豹和羚羊&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.蚂蚁搬家<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/eadb696ed0584c6bbf98d28f8947cc73/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>创建文明城市人人有责,下列不利于环境保护的做法是(&nbsp;)<br>A.使用环保购物袋&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.爱护花草树木<br>C.使用一次性筷子&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.不随意丢弃废旧电池<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/36ad1432406644b2abe27dd951c1bb45/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：容易<br>生物圈是地球上最大的生态系统,是所有生物共同的家园。它的范围是(&nbsp;)<br>A.大气圈的全部、水圈的大部和岩石圈的表面<br>B.大气圈的底部、水圈的大部和岩石圈的表面<br>C.大气圈的顶部、水圈的表面和岩石圈的全部<br>D.大气圈的底部、水圈的全部和岩石圈的大部<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2012/2ac0867088aa4d859a349c5408cf5ff9/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>“淀粉遇碘变蓝”是生物学实验中常用的原理。下列实验中没有用到此原理的是(&nbsp;)<br>A.探究馒头在口腔中的变化<br>B.检验种子萌发释放二氧化碳<br>C.观察玉米种子的结构<br>D.探究绿叶在光下制造有机物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/208a612e31384ab9934f0f8a1cae6e43/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列关于生物进化总体趋势的叙述,不合理的是(&nbsp;&nbsp;&nbsp;)<br>A.由水生到陆生&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.由简单到复杂<br>C.由低等到高等&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.由体型大到体型小<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/82b2470ee8ca46d4952186bedd47243e/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/8e98ba69150c44d48a7c3efcf7139ed8/92826BFC257380D523495837F1CCE4DC.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>国家教育部提出,中小学生要减轻课业负担,保证充足睡眠。充足的睡眠有利于垂体分泌促进人体生长所需的激素,这种激素是(&nbsp;)<br>A.甲状腺激素&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.生长激素&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.胰岛素&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.性激素<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/a4c819bacd504e30a31d66105e889150/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列病症与其病因的对应关系,正确的是(&nbsp;)<br>A.佝偻病——缺乏维生素A<br>B.侏儒症——缺乏含钙的无机盐<br>C.夜盲症——缺乏维生素D<br>D.坏血病——缺乏维生素C<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/d31ede8781e3491fbdea261acc6a8719/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>要制订一份合理的食谱,用量最多的食物应该是(&nbsp;)<br>A.蔬菜、水果类&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.谷类<br>C.鱼、肉、蛋类&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.豆、奶类<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2012/dd4e0a01f9c344dd88cecd178d6a1a0b/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>阅读试卷时,形成物像的部位是(&nbsp;)<br>A.瞳孔&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.晶状体&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.大脑皮层&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.视网膜<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/f10ba3b82f9047f2b7ff33a4ecceda40/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/582969e2e30e418e9b5a62db1f347bfe/81CC8D976FEE198C5DC488514CA59524.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>用药不当会损害对声波敏感的感觉细胞引起耳聋,该细胞位于(&nbsp;)<br>A.听小骨&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.半规管&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.鼓膜&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.耳蜗<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/6504893909a24fa8a4074cbb4022e827/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/baa37e17f4014edf88a88d28fbc57782/734F3BD8210D827E33D03F66E5714EB0.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>血液被称为“流动的组织”,人体的血液属于(&nbsp;&nbsp;&nbsp;)<br>A.上皮组织&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.结缔组织&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.肌肉组织&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.神经组织<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/0da2fe9c46f147df8d23631f2f5c7163/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/3101fc41eca94e60922478822e05c28e/212D4FC70FCACA1D18F2E6D0B902315A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>肺泡内的氧气扩散到血液需要经过几层细胞(&nbsp;)<br>A.一层&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.二层&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.三层&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.四层<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/4c644fb40f9549a5b61b20c3cc0df4a7/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/b80ad8430bfa4937981ef674db6d3569/4411947DBAE315206057078A70B49BDE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>在观察蚯蚓时,区分蚯蚓前端和后端的标志是(&nbsp;)<br>A.体节&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.刚毛&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.环带&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.环节<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2015/02d60ecbac974d4a898a71e90635c40e/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2015/205c460bf3f347fba1389cabcade6fe6/5CE585F35F459D3C9F65F31BF75B014A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>被称为“微生物学之父”的是(&nbsp;)<br>A.巴斯德&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.列文虎克&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.达尔文&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.弗莱明<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2014/28677ed171624873937dc243a3b8ce1f/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2014/acc505dfe1604148b5529d295c475ab8/DF78D510C0E9D9532A44B05851B50F38.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>“小鸡炖蘑菇”是一道美味的佳肴,其中蘑菇的生殖方式是(&nbsp;)<br>A.出芽生殖&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.分裂生殖&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.孢子生殖&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.种子生殖<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2014/5b24c6adc5254e1288785e85e77b1db0/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2014/48388b3a284e470bb1f22d884f31d0ed/01BE5EC4D174FA159F9EBC60603E6BDB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列运用了转基因技术的是(&nbsp;)<br>A.利用青霉提取青霉素<br>B.利用大肠杆菌生产胰岛素<br>C.试管婴儿的诞生<br>D.克隆羊的诞生<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/514245b31894460ba4c508f82f3222db/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下图是农田生态系统示意图,下列说法正确的是(&nbsp;)<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/9/E0BBF19FF58B68BA5DCC8873376B5926.png"><br>A.图中有四条食物链<br>B.水受到污染后,有毒物质积累最多的是水稻<br>C.细菌和真菌大多是分解者<br>D.该生态系统中数量最多的生物是鸟<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/ca47218fb1b54b038e5bfce361587cbf/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>我们常喝的酸奶味道浓郁、口感细腻,是利用哪种微生物制作的(&nbsp;)<br>A.酵母菌&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.乳酸菌&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.醋酸菌&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.霉菌<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2018/2f2eaeb022fe4decb24801bda0010a7b/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>蚕丝能织成美丽的绸缎,家蚕吐丝的时期是(&nbsp;)<br>A.卵&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.幼虫&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.蛹&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.成虫<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2010/2380a71c967542bb8b8bdf6a52751a3f/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列各组性状中,属于相对性状的是(&nbsp;)<br>A.果蝇的红眼与白眼&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.玉米的高茎与小麦的矮茎<br>C.豌豆的绿粒与圆粒&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.狗的黑毛与卷毛<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/0079b88979df4fa69f143778f348ec9c/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>在正常情况下,女性体细胞内的染色体组成是(&nbsp;)<br>A.22对+XY&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.22条+X&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.22对+XX&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.22条+Y<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2012/29300ccbebf3424d947c78429a33dee5/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>关于流感病毒,下列说法正确的是(&nbsp;)<br>A.病毒被称为生物,是因为能进行分裂繁殖<br>B.病毒个体微小,需用高倍显微镜观察<br>C.病毒营寄生生活,离开活细胞通常会变成结晶体<br>D.病毒没有成形的细胞核,属于原核生物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/3ec8fc2b79df4ddba188bd468ab39139/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>静脉出血特点及止血的方法正确的是(&nbsp;)<br>A.血液呈鲜红色,从伤口喷出,近心端止血<br>B.血液呈暗红色,连续不断地缓缓流出,近心端止血<br>C.血液呈暗红色,连续不断地缓缓流出,远心端止血<br>D.血液呈红色,从伤口渗出,用手指压迫止血<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/52bec61d8d144a659f91305084d9e894/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列动物的行为属于先天性行为的是(&nbsp;)<br>A.小鼠走迷宫获取食物&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.黑猩猩钓取白蚁<br>C.小鸡绕道取食&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.菜青虫取食十字花科的植物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/4abed0c376d541a4beba1f34f5a4d8e9/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>在人眼中,俗称“黑眼球”和“白眼球”的是(&nbsp;)<br>A.角膜和巩膜&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.虹膜和巩膜<br>C.虹膜和脉络膜&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.巩膜和视网膜<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/f181fd1cf89f4b1ea82c9fbdb9d03e0f/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/fa064c80363449b69ca9dd85a4b74e54/2A381BA190BFBC33602EAFE9C30D9462.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列有关人体消化和吸收的叙述,正确的是(&nbsp;)<br>A.蛋白质在胃里被分解成氨基酸<br>B.淀粉在唾液淀粉酶的作用下被分解成葡萄糖<br>C.肝脏分泌的胆汁含脂肪酶<br>D.小肠是人体消化食物和吸收营养的主要器官<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/22cbc6aba2da49b5a31ebf2a084c1e20/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>胚胎和胎儿在母体内发育的场所是(&nbsp;)<br>A.卵巢&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.子宫&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.输卵管&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.阴道<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/2f0a16a09d544b8ea77f5e5dbcc9b6fa/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/12f4ef70f8a34258a1375b508f65e8d8/39E2C630AD49D49E5DF3F680786A7F5C.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>具有净化水质,蓄洪抗旱作用的生态系统是(&nbsp;)<br>A.草原生态系统&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.农田生态系统<br>C.湿地生态系统&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.海洋生态系统<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2012/3055847b84ee4631a44c2bbd2a9680a5/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图为模拟膈肌运动的示意图,分析正确的是(&nbsp;&nbsp;&nbsp;)<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/27/5E822CE1FD23EBB4FB0E792982FAB6B4.png"><br>A.甲图演示呼气,膈肌收缩<br>B.乙图演示呼气,膈肌舒张<br>C.甲图演示吸气,膈肌舒张<br>D.乙图演示吸气,膈肌收缩<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/890cf8f144eb44caabc23596ee604c4c/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/b3aae2de38a34c5db206f2fb7cad8c03/6B6531A888B5F98AB60E53C11925C342.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>冬春季节是呼吸道传染病的高发期,为了保护同学们的身体健康,学校采取了一系列的措施。其中属于保护易感人群的是(&nbsp;)<br>A.教室内经常通风<br>B.班级定期消毒<br>C.积极锻炼身体,增强体质<br>D.患病同学进行隔离治疗<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/6d4096c188924e46837b6d24d1ac4c67/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列疾病中属于传染病的是(&nbsp;)<br>A.近视&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.心脏病&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.糖尿病&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.艾滋病<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/973f4e55342740afae846a2bad938426/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列属于特异性免疫的是(&nbsp;)<br>A.皮肤能阻挡大多数病原体侵入人体<br>B.泪液、唾液有杀菌作用<br>C.接种天花疫苗后不再患天花<br>D.呼吸道黏膜上的纤毛有清扫异物作用<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/fde8aa3645144a54af615b9fa660ba16/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>牡丹品种繁多,有王冠、白玉、豆绿等一千多个品种,这体现了(&nbsp;)<br>A.基因的多样性&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.生物种类的多样性<br>C.生态系统的多样性&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.生物数量的多样性<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/b6677ac3a25e4c1aa3cc36455c643a1d/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>新冠肺炎肆虐全球,我国自主研制出的新冠肺炎疫苗,在免疫学上属于(&nbsp;)<br>A.抗原&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.抗体&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.病原体&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.传染源<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/8f125731969b4f84a9b09c666f9791a8/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：填空题※知识点：填空题※试题难度：容易<br>细胞的生活是物质、能量和信息变化的统一体,细胞的控制中心是<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/f8f1419a0c644083a32d51daa6807f99/0374E9413C715D7A63D0ED42BFCA5AF5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/9838f9f89dac464aadd44d64227614fa/FB46D99ACF860B817DF60949AB715D56.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>叶片的结构是由表皮、叶肉和<br>组成的。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/65c07d2e5b774b0abf6e1340f23c8537/C30EF0B1DE89E92973126D27D4174605.png"><br>解析<br>略<br>※题型：填空题※知识点：填空题※试题难度：中等<br>节肢动物主要特征:体表有坚韧的<br>;身体和附肢都分节。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/e3d06d94f33a4db5b6fdc1c6ab97d00f/232E6026164D410CFB116CAD853A4CAE.png"><br>解析<br>略<br>※题型：填空题※知识点：填空题※试题难度：容易<br>人体的呼吸系统由呼吸道和<br>组成。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/fb72b87eb6994be08b1778104c19bc01/99266B17286C6150395E93A2847015B2.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/24bad428ff4e4e7697ec70024e27a57e/65A70529A05B73D0E8BED1D971105784.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>染色体是由<br>和<br>两种物质组成的。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/63f884b7ed634d9e8d5f8fd679867640/D09FE9A87F61EEDCE2C26EFD590001CC.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2e8ecdaed9c543109178649c09d823f0/93CBE8B0747CEE02F4F85C7F54655104.png"><br><br>※题型：填空题※知识点：填空题※试题难度：容易<br>关于生物进化的原因,人们普遍接受的观点是达尔文的<br>学说。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2016/cc419561cccd49eabf1fc5b95846e9b5/0268B5593246AC1C40FD5E0815FCF788.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2016/314cd4d9eb334ef790f72064c3f324b4/83C9DCBA47F18AB33B92B3243FE53FEC.png"><br><br>※题型：填空题※知识点：填空题※试题难度：容易<br>转基因超级鼠的获得证实了:<br>控制生物的性状。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/99953756fb3f4d9997918651709d7328/28026D9E3E35123E7EBF63703BBA343A.png"><br>解析<br>略<br>※题型：填空题※知识点：填空题※试题难度：容易<br>青少年心理健康的核心是<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/a12a8c148323464eb76cace1b60dce6b/D51308C0C8C895A297E7396B69F66FEF.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/1697fa03cce1423c8154f79d3ef07e04/5A9A6DD5BB0392CB4DA714B4A3A82C91.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>药品包装盒上有<br>OTC<br>标志,此药属于<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/f3b9bd2eb61440f8a7b28f069c278d1d/733AC3621B94DA9FD0D9FC925B0A00AF.png"><br>解析<br>略<br>※题型：填空题※知识点：填空题※试题难度：中等<br>阅读资料,回答问题:<br>今年是中国共产党建党<br>100<br>周年,也是脱贫攻坚决胜年。“精准扶贫,一定要精准施策”。要根据不同地区的实际情况,对贫困户实施产业帮扶,比如:北方地区适合建造温室大棚种植有机蔬菜。为了提髙蔬菜产量,农业技术人员给出了一系列建议:移栽蔬菓幼苗根部要带个土团。移栽植物时,要选择阴雨天或傍晩移栽,去掉部分叶片。要进行合理密植,夜间、阴雨<br>天采用<br>人工照明。将大棚与猪舍、鸡舍连通,便于施农家肥。夜间,大棚要掀开一角,降低内部温度。在技术人员的指导下很多地区快速脱贫。<br>1.移栽蔬菜幼苗时,根部带个土团的目的是。<br>2.合理密植,夜间和阴雨天采用人工照明都是为了提高效率。<br>3.种植蔬菜要适量施肥,肥料为植物的生长提供。<br>4.夜间,大棚降低温度是为了抑制植物的,减少有机物的消耗。<br>5.移栽植物时,要选择阴雨天或傍晚移栽,去掉部分叶片,是为了降低。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/4717024b7eb34b2188d4b29ce942dbf6/4AEF8FCC2B0474B840AD145F214341AD.png"><br>解析<br>略<br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>观察桃花的结构示意图,回答下列问题。<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/8/9/C51F656A2AC3A896452B0E42E85A1137.png"><br>1.雄蕊由组成。(填标号)<br>2.⑤中的落到雌蕊的上的过程叫传粉。(填名称)<br>3.我们爱吃的水蜜桃是由花的发育而成的。(填标号)<br>4.如果想让一棵桃树结出不同品种的桃,采用的无性生殖技术是。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/73799d31e99b4a6b8d45859f95b81299/2BD1E1D88267C4BB28138BB76AF49AA5.png"><br>解析<br>略<br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>观察心脏结构示意图,回答下列问题。<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/8/9/002D7251485CE1E0F27A19A5E8AFC55A.png"><br>1.体循环的起点。(填标号)<br>2.在人体血液循环中,血液由⑦流回③的过程中,血液成分变化由血变成血。<br>3.空气中的PM2.5灰尘小颗粒,被吸入人体后,最先在心脏的哪个腔发现?。(填标号)<br>4.用离体的猪心进行灌注实验,如果从肺静脉注水,水会从血管流出。(填标号)<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/b40ed1477d444ab49609338670e4e74b/FD5E92F370AC338F88D0F9EC023BC565.png"><br>解析<br>略<br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>观察尿液形成过程示意图,回答下列问题。<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/8/9/13797CF0D374142F54986AF3F4C8AA6F.png"><br>1.图中①③④构成一个。<br>2.健康人的尿液与③内液体相比没有。<br>3.人体每天形成原尿约180升,而尿液仅有1.5升,是因为④的作用。<br>4.尿液中出现红细胞是图中病变。(填标号)<br>5.与②相比,⑤内液体中含量明显减少。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/0d3107fb39e446b38cb63ed7b6c1e050/7FB8B3751BE7D71E9DEC4767332D5617.png"><br>解析<br>略<br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>观察屈肘动作和关节的示意图,回答下列问题。<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/8/9/2A3F5FA493CEC0E7E76FE19D5768B733.png"><br>1.图一中,A处于收缩状态。<br>2.图二中,能分泌滑液的结构是。(填标号)<br>3.图二中,①和③表面覆盖着一层,能减少骨与骨之间的摩擦。(填名称)<br>4.关节在运动中起作用。<br>5.①从③中滑脱出来的现象叫。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/202"

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