admins 发表于 2021-8-18 22:30:52

2020年中考生物真题专项汇编(4)生物圈中的人(10)

※题型:单选题※知识点:单选题※试题难度:中等<br>充足的睡眠能促进少年儿童长高,因为睡着时垂体能分泌较多的(&nbsp;&nbsp;&nbsp;)。A.生长激素&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.胰岛素&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.性激素&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.肾上腺素<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/a977b02e9a94456e937ee45fcaaea5cf/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/1cb8a0d32bfc4e5fb9edbbc02f17884a/CF3F83C65BF3546CC7E1BAF7BFB00431.png"><br><br>※题型:单选题※知识点:单选题※试题难度:中等<br>6月23日我国北斗系统最后一颗组网卫星发射成功,晓明看到此消息激动地心跳加快面红耳赤,此时他体内_________水平明显升高(&nbsp;)<br>A.生长激素&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.甲状腺激素&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.肾上腺素&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.胰岛素<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/12c4cb03f6a346febe541a93de49bd41/C6DD893B0461FAD877175A7ECBBD5939.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>某地扩建城市广场的过程中,清除了很多野生植物,铺设地砖,下列叙述错误的是(&nbsp;)<br>A.蜜蜂、蝴蝶等常见昆虫将会减少<br>B.城市生态系统自我调节能力下降<br>C.城市生态系统的生产者将减少<br>D.广场下土壤中微生物不受影响<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/4971a8c245ce43a0ae4339abe1fc83b9/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2eea0b0caf2644e1b47c05b064c67f73/6BDBD397CBBA96A63DC871CC0982B797.png"><br><br>※题型:单选题※知识点:单选题※试题难度:中等<br>垃圾分类,让绿色成为习惯。喝完饮料的塑料瓶应投放在下列哪个垃圾箱中(&nbsp;&nbsp;&nbsp;)<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/7/23/823BF78E71A8E129FD589935600B3496.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/7/23/3A2D1AB93602FE3C32C0B1DA5C759D5B.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/7/23/2AA7F34084D5766E2AF95B8A4D098DF2.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/7/23/6F56DA512090FCF18CCF7778D57BE169.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/8c75c6ae14724135912b94654d8d69e4/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/9831d963cd5e4e95aebfbb582c404a34/FA4728794B7C5722F96FB2FC61FB0614.png"><br><br>
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