<div style="layout-grid:;
"><div style="text-align: center;"><strong>2012学年度上学期小学单元学习水平评价</strong></div><div style="text-align: center;"><strong><br></strong></div><div style="text-align: center;"><strong>四年级数学(4)</strong></div><br><span>学校</span><span style=" text-decoration:underline ; "> </span><span> 四年</span><span style=" text-decoration:underline ; "> </span><span>班 学号</span><span style=" text-decoration:underline ; "> </span><span> 姓名</span><span style=" text-decoration:underline ; "> </span><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px;"><br></span><br><span><strong>内容:平行四边形和梯形</strong></span><br><br><span>全卷100分 答卷时间:60分钟</span><br><br><strong><span>一、直接写出得数(</span><span>10分)</span></strong><br><br><span>36×2= 360+470= 12×300= 350÷7= 930-140=</span><br><br><span>240÷8= 400×20= 140×60= 60×90= 350×30=</span><br><br><strong><span>二、填空</span><span>(共27分)</span><span></span></strong><br><br><span>1</span><span>.</span><span>有两组对边分别平行的( )形叫做平行四边形,( )的四边形叫做梯形,两腰相等的梯形叫( )。(3分)</span><br><br><span>2</span><span>.如果两条直线相交成( )角时,就说这两条直线互相垂直。(1分)</span><br><br><span>3.</span><span>过直线外一点画这条直线的平行线有( )条。(1分)</span><br><br><span>4.如果平行四边形的四个角都变成直角,那么这个平行四边形就成了( )。(1分)</span><br><br><span>5.右图中平行四边形的一组底和高分别是( )cm和</span><br><br><span>( )cm,另一组底和高分别是( )cm和( )cm,</span><br><br><span>这个平行四边形的周长是( )。(5分)<img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123113941.png?m=0.9424409356433898"></span><br><br><span style=" z-index:1; left:0px; "></span><span>6.在两条平行线之间画两条垂线段,量得其中一条垂线段长3厘米,那么另外一条垂线段的长度是( )厘米。(1分)</span><br><br><span>7.右图中有( )种图形,</span><span>它们分别是( )形( )形和( )形。(4分) <img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123114025.png?m=0.7575812039431185"> </span><br><br><br><br><span>8.同一平面内的两条直线 <img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123114135.jpg?m=0.07629548758268356"></span><br><br><span>9</span><span>.</span><span>梯形的( )和( )互相平行,梯形的底和高互相( )。(3分)</span><br><br><span style=" z-index:1; left:0px; "></span><span>10.右图中的两条直线互相( ),图中有( )个直角。(4分)<img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123114156.png?m=0.9382196641527116"></span><br><br><strong><span>三、下面是平行线的请画“√”,是垂线的请画“○”。</span><span>(8分)</span></strong><br><br><img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123114215.png?m=0.9933342591393739"><br><br><strong><span>四、选择题</span><span>(5分)</span></strong><br><br><span>1.如果有两条直线都与同一条直线平行,那么这两条直线( )。</span><br><br><span style=" z-index:1; left:0px; "></span><span>A.互相垂直 B.互相平行 C.一定相交</span><br><br><span>2.右图中,最短的一条线段是:( )</span><span><img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123114238.png?m=0.016589581966400146"></span><br><br><span>A.PA B.PB C.PC</span><br><br><span>3.长方形是特殊的( )。</span><br><br><span>A.正方形 B.平行四边形 C.梯形</span><br><br><span>4.两个完全一样的三角形,可拼成一个( )。</span><span></span><br><br><span>A.梯形 B.平行四边形 C.圆形</span><br><br><span>5</span><span>.</span><span>在平行四边形的一组对边之间,可以画( )高。</span><br><br><span>A.1条 B.2条 C.无数条</span><span> </span><br><br><strong><span>五、画一画,算一算</span><span>(共50分)</span></strong><br><br><span>1.过点A画已知直线的平行线。(6分)</span><br><br><span style=" z-index:1; left:0px; "></span><img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123114310.png?m=0.739423870574683"><br><br><span>2.过点B画已知直线的垂线。(6分)</span><br><br><span style=" z-index:1; left:0px; "></span><img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123114332.png?m=0.2724477394949645"><br><span><br></span></div><div style="layout-grid:;
"><span>3.画出底所对应的高。(6分)</span><br><br><span style=" z-index:1; left:0px; "></span><img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123114357.png?m=0.46139703458175063"><br><br><span>4.在平行四边形里面一条线段把它分割成两个梯形。(3分)</span><br><br><span style=" z-index:1; left:0px; "></span><img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123114419.png?m=0.4752009869553149"><br><br><span>5.画一个长4厘米,宽2厘米的长方形。(6分)</span><br><br><span>6.在下面的点子图上面画一个平行四边形和一个梯形,并分别画出它们的高。</span><span>(12分)</span><br><br><span style=" z-index:1; left:0px; "></span><img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123114452.png?m=0.5301455040462315"><br><br><span>7.一头小牛在点A处,它要到河边喝水。为了让小牛尽快地喝到水,请你设计一条从点A到河边最近的线路,并在图上画出来。(5分)</span><br><br><span style=" z-index:1; left:0px; "></span><img src="//www.szxuexiao.com/uploadimages/2012/1123/20121123114514.png?m=0.8698558495379984"><br><br><span>8.小明用40厘米的铁丝围成了一个平行四边形,其中一边长是8厘米,另外三条边分别是多少厘米?(6分)</span><br><br></div>
四年级上