admins 发表于 2021-8-18 22:49:47

5.1.7哺乳动物2021-2022学年生物人教版八年级上册随堂小测

※题型：单选题※知识点：单选题※试题难度：中等<br>鲨鱼和鲸都生活在海洋中。下列关于它们共同特征的叙述,正确的是(&nbsp;&nbsp;&nbsp;)<img src="https://picture2.zhihuicn.com/testImage/2/2019/6/27/ADBBF6915E3956EECBF562E6687038E5.png"><br>A.用鳃呼吸&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.体温恒定&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.都有脊柱&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.胎生哺乳<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/aea00726aef04c8b93f3e72e49e838fa/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/51cbe579a34c42d88d3f3a1d37725feb/45880F0AE556F108503744881670E449.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>蝙蝠不属于鸟类,而属于哺乳类,这是因为其(&nbsp;)<br>A.有发达的胸肌&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.善于飞翔<br>C.胎生、哺乳&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;&nbsp;D.有翼<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/f742e274183e4f1fb4b23df3f84aa56f/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/6b1409445cc34a2589da1fb4854f7dc6/C14852B200750CDC683FF20109348358.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>鸭嘴兽有着肥胖的身体、扁平的尾巴和嘴巴,卵生,母体分泌乳汁哺育幼仔成长,根据所学知识,你认为鸭嘴兽属于(&nbsp;)<br>A.两栖动物&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.爬行动物&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.鸟类&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.哺乳动物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/f52091350f1845bca0370d6e42283907/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/13049f7fb895436ea2454a016f33f14a/4C297681B68AA61DAFA4A4D29C914273.png"><br><br>
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