暑假抢先知（4）——2020-2021学年上学期八年级生物人教版
※题型：单选题※知识点：单选题※试题难度：中等<br>鱼是怎样呼吸的呢?生物小组的同学用吸管吸取一些菠菜汁,慢慢地滴在鱼头的前方,观察菠菜汁的流动途径是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/28/854ED6D7E5538A8F3A45A52257C16B38.png"><br>A.从鼻孔流入,再由鳃盖后缘流出<br>B.从口流入,再由口流出<br>C.从鼻孔流入,再由口流出<br>D.从口流入,再由鳃盖后缘流出<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/ae48f1fe67d04e4cbc9028c7d1006850/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2d75b976ca4c440d85faecf20231c195/15730E79416E078D0C565DFC7BDA418F.png"><br><br>
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