2020-2021学年七年级下册生物人教版同步课时作业（14）人体对外界环境的感知
※题型：单选题※知识点：单选题※试题难度：中等<br>戴隐形眼镜时,需要紧贴眼球的( )<br>A.虹膜 B.角膜 C.脉络膜 D.视网膜<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/213cb7285bf94b17aedea7b3ae4bbaa1/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/082a4df2067c463882f5e1c2ee64c846/F974426F56273EFE0460B0163DA2FE06.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列关于耳的结构与功能的说法中,错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/5/13/1EE8309EAA58BAF8731139F75E553197.png"><br>A.⑨和⑩用于收集声波,属于外耳<br>B.⑦能将鼓膜产生的振动传到耳蜗<br>C.③能将振动转化为神经信号,产生听觉<br>D.④通向咽部,能调节鼓室气压<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/07e36da277fa4a81b00985a73cc89871/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/e534fe96ee084cc688a69800d6f8bab8/3F12FDCD865F45E3F7DAEA45873C31A1.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>每年的3月3日是全国爱耳日,下列有关耳的描述不正确的是()<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/24/786415438C5D10A3EC26FD3AE044A845.jpeg"><br>A.听觉的形成部位是在④<br>B.鼻咽部感染时病菌可通过⑥进入中耳引起中耳炎<br>C.长时间戴耳机听音乐会对①造成损伤<br>D.②和③能感受头部位置变动情况<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/cc328809d1ce4bfbaa24f583fcc5eef6/5EB37C218D6D19EB98E791A4205997A8.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/ae7894931e99417b9c9c0c8d580496df/90132F284AF57E804A0BF0DE293A55AD.png"><br><br>
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