2020-2021学年七年级下册生物冀少版同步课时作业（11）信息的获取
※题型：单选题※知识点：单选题※试题难度：容易<br>通过屏蔽蓝光可降低电子屏幕辐射对眼球成像部位的影响,该部位是( )<br>A.视网膜 B.角膜 C.视神经 D.晶状体<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/5db3bf34c5cd4fc6a44cf9db23f8d546/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/9d64385a75b0413e9390bc666986e38b/DBE61BD29F1DB4E2FA923C22A75E876F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>眼球里有一个能折射光线的结构,它能灵敏调节曲度使人可看清远近不同的物体,这个结构是( )<br>A.角膜 B.晶状体 C.瞳孔 D.视网膜<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/ac399e728e7846df87e8038ec64cc90b/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/c691d84dc5d34f9abc07422072eef9ce/77F74CDF5C18FDCFCA9AFFB195753251.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>当你乘坐的汽车进入隧道时,你的感觉和瞳孔变化是( )<br>A.隧道内很暗,瞳孔放大 B.隧道内明亮,瞳孔放大<br>C.隧道内很暗,瞳孔缩小 D.隧道内明亮,瞳孔缩小<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/26ca072499f94093bc54a6c801045406/DA50F910BECBBBA4AAB35D7A1AB24524.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/022b7853a1c74c0ba1416e0bd3a20086/6F05F20C29EE443BC6EAACF452025DF1.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>某人发生听觉障碍后去检查,结果表明大脑和耳的结构并无损伤。那么,推测发病的部位可能是( )<br>A.听神经 B.中耳 C.鼓膜 D.耳蜗<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/1c663d008ad64494a42639b1c62371a1/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/eb98121768ec442e86fd6d511fc9269c/24CC2D4257104D8B952F3A1F8FDA8832.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>考场上,同学们信心百倍,听到开考铃声响起,立即挥笔疾书.据图回答:<img 1.你能够看到试卷上的字,首先由于试卷反射的光线进入眼球,经过[]→瞳孔→[]晶状体→玻璃体等的折射作用,在[⑦]上形成像。<br>2.你能够听到开考的铃声,是因为声波引起[]的振动,刺激了[]耳蜗听觉感受器,产生神经冲动上传,最终在上产生"铃声响了,可以答题了"的想法。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/665b70be3be644288379e3e0eefc8d77/B40DC4D9321E728679D50CD5AA95C3A8.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/9085cdb531f5429397a8d9a8e34ba9d5/BCD60E30CE989CE824A84C632DC04B9F.png"><br><br>
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