2020-2021学年生物北师大版七年级上册同步实验室（五）练习使用显微镜
※题型：单选题※知识点：单选题※试题难度：中等<br>使用显微镜时,如果发现镜头上有污渍,擦拭应使用( )<br>A.餐巾纸 B.纱布 C.擦镜纸 D.棉花<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/b9a6b69abfca412d92deb2f184290794/D7C9A679F3C72D4F1064B7D0A0FD4AD8.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/bda22585eb8f49b192cc8be9dac203a9/5177B755D5046BD267699980340E6716.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>在使用显微镜观察时,下降镜筒时眼睛要注视物镜的原因是( )<br>A.观察物镜是否对准通光孔<br>B.可在视野中找到物像<br>C.观察物镜是否对准反光镜<br>D.观察物镜与玻片标本相撞<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/a94070daddd44ac797b0842f569c887d/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/993d47866125465783a5e01a181ac585/9DACBB8C72A613ED1FB69F74007FFB0D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>用低倍镜观察时,如果在视野内所看到的图象是“↗”,那么,在载玻片上写的是( )<br>A.↖ B.↙ C.→ D.↘<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/0550398e6c7f4672b52b0eb31d285e44/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/3611ba27555748e09369c283d864e9af/E7ACF6C04ED402EF0F194260C6B288E6.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>要想把显微镜视野中的一个气泡从视野右下方移出去,应将玻片朝哪个方向移动( )<br>A.左上方 B.左下方 C.右上方 D.右下方<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/d29b65f24faf48649bba19f354133fdb/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/ef925d59ad9645f7a571ef1ef7f7094d/A78D362168B5C22A713F7B17FD88DF6C.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>某同学在显微镜下看见一生物的运动方向如图,则该生物的实际运动方向是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/19/33D6615CED4F9D384AE3DD977A118A26.png"><br>A.顺时针 B.逆时针 C.向左运动 D.向右运动<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/6b315891aa1241cfb181191c740acd03/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/24d93fda79ee4e8e98058a09fd5d140a/B52FD3F7279A1E46CBC8368023249208.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>如图为显微镜的构造图,下列叙述错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/14/0C8F39D8095DF0C2AC91672DFFA76499.png"><br>A.对物像具有放大作用的是①③<br>B.能调节视野明暗程度的是⑤<br>C.调换不同物镜的结构是⑥<br>D.放置玻片标本的是④<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/f1329286c77940c0b6a94680455fed08/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/b726d83854f34977976b7a0e0874bea1/9CFC0ED5F065CDB649D905EC1CC27A58.png"><br><br>
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