初中毕业升学考试（浙江湖州卷）生物（解析版）
题型：选择题※难度：容易
<div><div><p>【题目】皮肤能够阻挡病原体侵入人体，这属于人体防御病原体的（ ）</p><p>A．第一道防线 B．第二道防线 C．特异性免疫 D．人工免疫</p><p> </p></div></div>
<div><p>【答案】A</p><p>【解析】</p><p>试题分析：人体三道防线的组成、功能和免疫的特点如表：</p><table cellspacing="0" cellpadding="0" style="border:0.75pt solid #000000; border-collapse:collapse"><tr><td style="width:75.35pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p> </p></td><td style="width:131.95pt; border-right-style:solid; border-right-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>组成</p></td><td style="width:100.25pt; border-right-style:solid; border-right-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>功能</p></td><td style="width:75.35pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>免疫类型</p></td></tr><tr><td style="width:75.35pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>第一道防线</p></td><td style="width:131.95pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>皮肤、黏膜及分泌物（唾液、胃液）</p></td><td style="width:100.25pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>阻挡杀死病原体，清除异物</p></td><td style="width:75.35pt; border-top-style:solid; border-top-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>非特异性免疫</p></td></tr><tr><td style="width:75.35pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>第二道防线</p></td><td style="width:131.95pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>体液中的杀菌物质和吞噬细胞</p></td><td style="width:100.25pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>溶解、吞噬和消灭病菌</p></td><td style="width:75.35pt; border-top-style:solid; border-top-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>非特异性免疫</p></td></tr><tr><td style="width:75.35pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>第三道防线</p></td><td style="width:131.95pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>免疫器官和免疫细胞</p></td><td style="width:100.25pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>产生抗体，消灭病原体</p></td><td style="width:75.35pt; border-top-style:solid; border-top-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle"><p>特异性免疫</p></td></tr></table><p>皮肤能够阻挡病原体侵入人体，这属于人体防御病原体的第一道防线。</p></div>
页:
[1]