[err:数据源标签'PE.DataSource id="cone" datasource="资料_内容页" itemId="96806" xslt="true" wu="0"'返回数据错，原因：“s”是一个意外标记。应为空格。 行 39，位置 2。，源码：9680632178山东省郯城县红花镇初级中学八年级物理：第四章《多彩的光》单元检测题（附答案）159.50KB159.50Bdocczwlzx红花镇初级中学czwlzx/UploadFiles/UserPic/UserAvatars/15219_150_150.jpg <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?id=96806"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=dayhits&id=96806"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=weekhits&id=96806"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=monthhits&id=96806"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetBrowseTimes.aspx?id=96806"></script> <img src="/images/star3.jpg" /> 红花镇初级中学 0 多彩的光2017年12月15日/UploadFiles/nopic.gif <span style="font-size:15.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family: <span style="font-size:15.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family: "s New Roman"-hansi-font-family:"s New Roman";第四章《多彩的光》;/b>;b>;span lang=" en-us"="">  <span style="font-size:15.0pt;line-height: 150%;font-family:宋体;mso-ascii-font-family:"s New Roman"-hansi-font-family: "s New Roman";单元测试;/b>;b>;span lang=" en-us"=""> 　 　 <span style="mso-bidi-font-size:10.5pt;line-height:150%; font-family:宋体;mso-ascii-font-family:"s New Roman"-hansi-font-family: "s New Roman";姓名：;u>; 【内容简介】 ;b>;span lang=" en-us"="">  ;b>;span lang=" en-us"=""> 　 　 ;span lang=" en-us"="">                ;span lang=" en-us"="">                 　 　                            　　 1 、     　 　         A 、镜面反射                             B、光的折射规律　　         C 、漫反射                               D、光的直线传播　　 2 、一条光线垂直射到平面镜上，若保持入射光线不变，使镜面绕入射点　　 20°        　 　         A 、10°           B、20°            C、40°           D、70°　　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　　 　 　 　 3、晚上，在桌面上铺一张白纸，把一小块平面镜放在纸上，让   　 　 手电筒的光正对着平面镜照射，如图2所示，则从侧面看去：（      ） 　 　 A．镜子比较亮，它发生了镜面反射   　　 B．镜子比较暗，它发生了镜面反射 　　 C．白纸比较亮，它发生了镜面反射   　　 D．白纸比较暗，它发生了漫反射           　 　 4 、 下面关于光学现象与相应的光学知识的连线，正确的是（      ） A ．日食的形成------光的反射        　　 B ．斜插入水中的筷子看上去变弯了------光的折射　　 C ．楼房在水中的倒影------凸透镜成像    　　 D ．放大镜看物体变大了 ------ 凹透镜成像 　 　 5 、 如图 1 所示，画中人出现了错误判断．以下四幅光路图中，能正确说明产生这一现象原因的是 (    ) ． 　 　 {C}　 　 　　　 6 、 8cm 5 cm       　 　 A 、一定能用光屏接收到         B、一定成放大的虚像　　 C 、一定成放大的实像           D、可能成放 像 　 　 7 、下列说法中，不正确的是   （     ）　　   A 、眼睛能看到实像，也能看到虚像     B、可用光屏显示的像一定是实像 [ 来源:Z&amp;xx&amp;k.Com] 　 　   C 、光的折射产生的像都是虚像         D、平面镜中的像都是虚像　　 8 、 许多照相机镜头到胶片的距离是可调的。某次拍摄前摄影师已经 “ 调好焦 ” ，使被摄者在胶片上形成了清晰的像。如果在拍摄前被摄者移动了位置，他和摄影者的距离变远了，为了使他在胶片上仍然成清晰的像，镜头与底片的距离应 (    )  　　 A、变大       B ．变小      C ．先变小后变大     D ．先变大后变小 　 　 ....... <span style="font-size:15.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family: "s New Roman"-hansi-font-family:"s New Roman";第下载地址1|sj/2017/12/201712150952316804.doc<p class="MsoNormal" style="text-indent:67.75pt;mso-char-indent-count:4.5; line-height:150%"> <b> <span style="font-size:15.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family: &quot;s New Roman&quot;-hansi-font-family:&quot;s New Roman&quot;;第四章《多彩的光》&lt;an&gt;;/b&gt;;b&gt;;span lang=" en-us"="">  </span> </b> <b> <span style="font-size:15.0pt;line-height: 150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;-hansi-font-family: &quot;s New Roman&quot;;单元测试&lt;an&gt;;/b&gt;;b&gt;;span lang=" en-us"=""> 　 　 </span> </b> </p> <p class="MsoNormal" style="text-indent:68.25pt;mso-char-indent-count:6.5; line-height:150%"> <span style="mso-bidi-font-size:10.5pt;line-height:150%; font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;-hansi-font-family: &quot;s New Roman&quot;;姓名：&lt;an&gt;;u&gt;;span lang=" en-us"="">             </span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%">  </span> <span style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;;成绩：&lt;an&gt;;u&gt;;span lang=" en-us"="">                 </span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%"> 　 　 </span> </p> <p class="MsoNormal" style="line-height:150%"> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;;一&lt;an&gt;;span style=" mso-bidi-font-size:="" 10.5pt;line-height:150%"=""> </span> <span style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;;选择题&lt;an&gt;;span lang=" en-us"="">                           <u>　　</u></span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">1</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">、</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;;“叶障目，不见泰山”反映的科学道理是（&lt;an&gt;;span lang=" en-us"="">    </span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;;）&lt;an&gt;;span lang=" en-us"=""> 　 　 </span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%">      </span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体">  A</span> <span style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体">、镜面反射<span lang="EN-US">                             B</span>、光的折射规律<span lang="EN-US">　　</span></span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">        C</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%; font-family:宋体">、漫反射<span lang="EN-US">                               D</span>、光的直线传播<span lang="EN-US">　　</span></span> </p> <p class="MsoNormal" style="margin-left:42.0pt;text-indent:-42.0pt;mso-char-indent-count: -4.0;line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体">2</span> <span style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体">、一条光线垂直射到平面镜上，若保持入射光线不变，使镜面绕入射点<span lang="EN-US">　　</span></span> </p> <p class="MsoNormal" style="margin-left:42.0pt;mso-para-margin-left:2.0gd; text-indent:-21.0pt;mso-char-indent-count:-2.0;line-height:150%"> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family: &quot;s New Roman&quot;-hansi-font-family:&quot;s New Roman&quot;;转&lt;an&gt;;span lang=" en-us"="">20°</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family: &quot;s New Roman&quot;-hansi-font-family:&quot;s New Roman&quot;;，则反射光线与入射光线的夹角是&lt;an&gt;;span lang=" en-us"="">  </span> <span style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;;（&lt;an&gt;;span style=" mso-bidi-font-size:="" 10.5pt;line-height:150%"=""> <span lang="EN-US">    </span> </span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family: &quot;s New Roman&quot;-hansi-font-family:&quot;s New Roman&quot;;）&lt;an&gt;;span lang=" en-us"=""> 　 　 </span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%">      </span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体">  A</span> <span style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体">、<span lang="EN-US">10°           B</span>、<span lang="EN-US">20°            C</span>、<span lang="EN-US">40°           D</span>、<span lang="EN-US">70°　　</span></span> </p> <p align="left" class="MsoNormal" style="line-height: 150%;"> &lt;!--[if gte vml 1]&gt;　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　　 　 　 　 &lt;!--[endif]--&gt; <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">3</span><span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">、</span><span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-hansi-font-family:&quot;s New Roman&quot;so-bidi-font-family:宋体;mso-ansi-language:ZH-CN">晚上，在桌面上铺一张白纸，把一小块平面镜放在纸上，让   </span><span style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体;mso-hansi-font-family:&quot;s New Roman&quot;so-bidi-font-family:宋体;mso-font-kerning:0pt;mso-ansi-language:ZH-CN"> 　 　 </span></p> <p align="left" class="MsoNormal" style="text-indent: 10.5pt; line-height: 150%;"> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-hansi-font-family: &quot;s New Roman&quot;-bidi-font-family:宋体;mso-ansi-language:ZH-CN">手电筒的光正对着平面镜照射，如图2所示，则从侧面看去：（      ） </span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-hansi-font-family:&quot;s New Roman&quot;so-bidi-font-family:宋体;mso-font-kerning:0pt;mso-ansi-language:ZH-CN"> 　 　 </span> </p> <p class="MsoNormal" style="margin-bottom:1.2pt;text-indent:10.5pt;mso-char-indent-count: 1.0;line-height:150%;mso-layout-grid-align:none;text-autospace:none"> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-hansi-font-family: &quot;s New Roman&quot;-bidi-font-family:宋体;mso-ansi-language:ZH-CN">A．镜子比较亮，它发生了镜面反射   　　</span> </p> <p class="MsoNormal" style="margin-bottom:1.2pt;text-indent:10.5pt;line-height: 150%;mso-layout-grid-align:none;text-autospace:none"> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-hansi-font-family:&quot;s New Roman&quot;so-bidi-font-family:宋体;mso-ansi-language:ZH-CN">B．镜子比较暗，它发生了镜面反射 　　</span> </p> <p align="left" class="MsoNormal" style="text-indent: 10.5pt; line-height: 150%;"> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-hansi-font-family: &quot;s New Roman&quot;-bidi-font-family:宋体;mso-ansi-language:ZH-CN">C．白纸比较亮，它发生了镜面反射   　　</span> </p> <p class="MsoNormal" style="margin-left:21.0pt;mso-para-margin-left:1.0gd; text-indent:-10.5pt;mso-char-indent-count:-1.0;line-height:150%"> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-hansi-font-family: &quot;s New Roman&quot;-bidi-font-family:宋体;mso-ansi-language:ZH-CN">D．白纸比较暗，它发生了漫反射           </span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体"> 　 　 </span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">4</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">、</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;-font-kerning:0pt">下面关于光学现象与相应的光学知识的连线，正确的是（</span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%;mso-font-kerning: 0pt">     </span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;-font-kerning:0pt">）</span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-font-kerning:0pt">A</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-font-kerning: 0pt">．日食的形成<span lang="EN-US">------</span>光的反射<span lang="EN-US">        　　</span></span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-font-kerning:0pt">B</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-font-kerning: 0pt">．斜插入水中的筷子看上去变弯了<span lang="EN-US">------</span>光的折射<span lang="EN-US">　　</span></span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-font-kerning:0pt">C</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-font-kerning: 0pt">．楼房在水中的倒影<span lang="EN-US">------</span>凸透镜成像<span lang="EN-US">    　　</span></span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-font-kerning:0pt">D</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family: &quot;s New Roman&quot;-hansi-font-family:&quot;s New Roman&quot;-font-kerning: 0pt">．放大镜看物体变大了</span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt; line-height:150%;mso-font-kerning:0pt">------</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;-font-kerning:0pt">凹透镜成像</span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%;mso-font-kerning: 0pt"> 　 　 </span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">5</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">、</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;-font-kerning:0pt">如图</span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%;mso-font-kerning: 0pt">1</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%; font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;-hansi-font-family: &quot;s New Roman&quot;-font-kerning:0pt">所示，画中人出现了错误判断．以下四幅光路图中，能正确说明产生这一现象原因的是</span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%;mso-font-kerning: 0pt">(    )</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;-font-kerning:0pt">．</span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%;mso-font-kerning: 0pt"> 　 　 </span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;mso-font-kerning:0pt">{C}&lt;!--[if gte vml 1]&gt;　 　 　&lt;!--[endif]--&gt;　　</span> </p> <p class="MsoNormal" style="margin-left:42.0pt;text-indent:-42.0pt;mso-char-indent-count: -4.0;line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体">6</span> <span style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体">、</span> <span style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;;一凸透镜的焦距是&lt;an&gt;;span lang=" en-us"="">8cm</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family: &quot;s New Roman&quot;-hansi-font-family:&quot;s New Roman&quot;;，当物体距焦点&lt;an&gt;;span lang=" en-us"="">5 cm</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family: &quot;s New Roman&quot;-hansi-font-family:&quot;s New Roman&quot;;时，则物体的成像情况是&lt;an&gt;;span lang=" en-us"="">  </span> <span style="mso-bidi-font-size:10.5pt; line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;;（&lt;an&gt;;span lang=" en-us"="">    </span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;s New Roman&quot;so-hansi-font-family:&quot;s New Roman&quot;;）&lt;an&gt;;span lang=" en-us"=""> 　 　 </span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">A</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">、一定能用光屏接收到<span lang="EN-US">         B</span>、一定成放大的虚像<span lang="EN-US">　　</span></span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">C</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">、一定成放大的实像<span lang="EN-US">           D</span>、可能成放</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-ascii-font-family: &quot;s New Roman&quot;-hansi-font-family:&quot;s New Roman&quot;;大的实像，也可能成放大的虚&lt;an&gt;;span style=" mso-bidi-font-size:10.5pt;="" line-height:150%;font-family:宋体;mso-ascii-font-family:&quot;times="" new="" roman&quot;;="" mso-hansi-font-family:&quot;times="" roman&quot;"="">像</span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%"> 　 　 </span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">7</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">、下列说法中，不正确的是<span lang="EN-US">   </span>（<span lang="EN-US">     </span>）<span lang="EN-US">　　</span></span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">  A</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%; font-family:宋体">、眼睛能看到实像，也能看到虚像<span lang="EN-US">     B</span>、可用光屏显示的像一定是实像</span> <span lang="EN-US" style="font-size:2.0pt;mso-bidi-font-size:10.5pt;line-height:150%; font-family:宋体;color:white">[</span> <span style="font-size:2.0pt;mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;color:white">来源<span lang="EN-US">:Z&amp;xx&amp;k.Com]</span></span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体"> 　 　 </span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">  C</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%; font-family:宋体">、光的折射产生的像都是虚像<span lang="EN-US">         D</span>、平面镜中的像都是虚像<span lang="EN-US">　　</span></span> </p> <p class="MsoNormal" style="line-height:150%"> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">8</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">、</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-hansi-font-family:&quot;s New Roman&quot;so-bidi-font-family:宋体;mso-ansi-language:ZH-CN">许多照相机镜头到胶片的距离是可调的。某次拍摄前摄影师已经</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;mso-ascii-font-family:宋体; mso-bidi-font-family:宋体;mso-ansi-language:ZH-CN">“</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-hansi-font-family: &quot;s New Roman&quot;-bidi-font-family:宋体;mso-ansi-language:ZH-CN">调好焦</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;mso-ascii-font-family:宋体; mso-bidi-font-family:宋体;mso-ansi-language:ZH-CN">”</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-hansi-font-family: &quot;s New Roman&quot;-bidi-font-family:宋体;mso-ansi-language:ZH-CN">，使被摄者在胶片上形成了清晰的像。如果在拍摄前被摄者移动了位置，他和摄影者的距离变远了，为了使他在胶片上仍然成清晰的像，镜头与底片的距离应</span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%">(    )  　　</span> </p> <p class="MsoNormal" style="text-indent:31.5pt;mso-char-indent-count:3.0; line-height:150%"> <span style="mso-bidi-font-size:10.5pt;line-height:150%; font-family:宋体;mso-bidi-font-family:宋体;mso-ansi-language:ZH-CN">A、变大</span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体">      B</span> <span style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体;mso-bidi-font-family:宋体;mso-ansi-language: ZH-CN">．变小</span> <span lang="EN-US" style="mso-bidi-font-size:10.5pt;line-height: 150%;font-family:宋体">     C</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%;font-family:宋体;mso-bidi-font-family: 宋体;mso-ansi-language:ZH-CN">．先变小后变大</span> <span lang="EN-US" style="mso-bidi-font-size: 10.5pt;line-height:150%;font-family:宋体">    D</span> <span style="mso-bidi-font-size:10.5pt;line-height:150%; 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