2020-2021学年七年级下册生物冀少版单元测试AB卷 第二单元第一章 合理膳食 平衡营养 A
※题型：单选题※知识点：单选题※试题难度：中等<br>处于青春期的青少年应适量补充鱼、瘦肉、蛋、牛奶等食物,因为这些食物富含有利于身体发育的( )<br>A.维生素 B.蛋白质 C.糖类 D.脂肪<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7b0512969fea4f5f9434ee9d2650787a/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/7d2364a15a2d4f89aed2bc6de8c7fe16/18D53A9928C95484123A3A2CB88B4678.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>青少年应多吃富含蛋白质、钙、磷丰富的食物。对照下列营养学家建议的成人食谱图,你认为青少年最应相对增加的食物类型为( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/6/18/DC4815467AD1D3EA2B415315CB559C1D.png"><br>A.Ⅰ、Ⅱ B.Ⅱ、Ⅲ C.Ⅳ、Ⅴ D.Ⅲ、Ⅳ<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/c323f213d9b14b06a9b88e11e859f257/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/99bf02e8b81749afb2703afa3c729e3c/40E0956C9E8F3F07D893959AB2DB4A7D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>“荤素搭配有营养,饥饱有度利健康”。下列表示健康成年人膳食中各种食物配置比例最合理的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/31/21AE61BD49C7EBF86BF4A7242C6BCD91.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/31/22CE02AB54B49F7D4776407864F81C9F.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/31/C356A2701BFDFCB4F6121A676374E8E4.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/31/A301B5CEB3A58A45E199E51772476828.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/4708b8a79ae74317a68dc65099e18086/E7F0EDF83F40244C8F0C84B97471AED6.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>分析某生物兴趣小组同学的实验记录,下列说法错误的是( )<br><tbody><br>试管标号<br>加入物质<br>搅拌<br>温度<br>时间<br>碘液<br>现象<br>甲<br>馒头碎屑、唾液<br>充分搅拌<br>37℃<br>10分钟<br>2滴<br>?<br>乙<br>馒头碎屑、清水<br>充分搅拌<br>37℃<br>10分钟<br>2滴<br>?<br></tbody><br>A.变量是唾液 B.37℃模拟人体口腔温度<br>C.甲试管现象是不变蓝 D.乙试管现象是不变蓝<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/f28e81609bcc4450b27f78d664ed27e2/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/5699811692294e2aa1fa919d7d5c6847/B04FD5129FEF704E1F92C60DD0AE55CE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列不含消化酶的消化液是( )<br>A.胆汁 B.胃液 C.肠液 D.唾液<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/f1a91332ccc9425083be850db7c2fb92/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/eaa1f3a283ac4627840c8364af12fdcb/37FBA0A713047485479F1E448330EF65.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列哪项不是小肠结构与消化机能相适应的特点( )<br>A.小肠长5~6米<br>B.黏膜表面有许多皱襞和小肠绒毛<br>C.小肠绒毛中有毛细血管和毛细淋巴管<br>D.小肠壁内有肠腺<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/b1fd1e655cee49f68be5f7fcfcb20539/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/c0d06144edc84d3db321e11e9f1cb4fb/C88F212D46E503E1D8B72ABFAB408580.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>馒头是我们的主食,淀粉是其主要成分。人体参与淀粉消化的消化液有( )<br>A.胃液、胆汁、胰液 B.唾液、肠液、胰液<br>C.胆汁、肠液、胰液 D.唾液、胃液、肠液<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/401faf6c5999430793241fd3ef9eab75/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/9f21910f1add4e6ca8af954873166768/8F464A2F87913A7C539962B4ACDC6823.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列结构与功能不相适应的一组是( )<br>A.口腔分泌唾液有利于消化淀粉<br>B.胃分泌胃液能初步消化蛋白质<br>C.肝脏分泌胆汁有利于消化脂肪<br>D.小肠分泌肠液有利于吸收营养物质<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/0bcc9c0b7eda43618f86efdebeef5ea0/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/9527a185a5354ab3ad7932774a2bf615/91146CF72ED852077A21ED6D1506A120.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列有关食品安全的说法中,不正确的是( )<br>A.购买食品时要注意查看食品包装上是否有食品质量安全标识"QS"<br>B.过期的食品往往有酸味或霉味,有的周围还有少量液体浸出<br>C.不吃发芽的马铃薯和不随便将野外不认识的蘑菇采回来吃<br>D.打开包装的牛奶、饮料等,可在常温下保存<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/5658c8098e3f45dcb49f9b330e139ff4/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/3249063cf0074a1f81e2c1f078f95bad/7F8B823EBDB2C8E93A3524E29428BCBF.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>如图是人体消化系统部分器官示意图,<br>请据图<br>回答下列问题。<br><img src="https://picture2.zhihuicn.com/testImage/2/2019/1/4/E492D585167BCFD1FFCC4BE2F4CED1E7.png"><br>1.消化系统由和两部分组成。<br>2.消化道中呈囊状、最膨大的部位是⑤,它能对进行初步消化。<br>3.能够分泌胆汁的结构是(填序号),其分泌的胆汁贮藏在胆囊中,再经导管流入十二指肠,最后进入(填序号)内。<br>4.消化和吸收营养物质的主要器官是(填序号)。<br>5.图中⑦是大肠,长约1.5米,它能够吸收一部分水、无机盐和。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/14869aba446c458b9bbc7d02f11e933d/4287DCC96B17DB480743312905AAA000.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/6dba4c21a0ba42279901ea6bcee56205/4F9E450F4C749B3339E10AAFA063885D.png"><br><br>
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