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如图是我们所学过的五种动物。请据图回答下列问题： 

 

填空，完成下列说理过程

如图，点A，O，B在同一条直线上，OD，OE分别平分∠AOC和∠BOC．

⑴求∠DOE的度数；

⑵如果∠COD=65°，求∠AOE的度数．

解：⑴如图，因为OD是∠AOC的平分线，

所以∠COD= ∠AOC．

因为OE是∠BOC的平分线，

所以∠COE= ．

所以∠DOE=∠COD+= (∠AOC+∠BOC)= ∠AOB=°．

⑵由⑴可知

∠BOE=∠COE=﹣∠COD=°．

所以∠AOE=﹣∠BOE=°．

某年7月1日12时30分52秒，广州市花地大道时间园里的九根铁柱瞬间失去黑影，出现“立杆无影”的奇观，引得现场的数百名广州市民啧啧称奇。据此回答下列小题。

如图，A、B是两个蓄水池，都在河流a的同侧，为了方便灌溉作物，要在河边建一个抽水站，将河水送到A、B两地，问该站建在河边什么地方，可使所修的渠道最短，试在图中确定该点．（保留作图痕迹）

已知函数 是奇函数，函数 是偶函数， ，则不等式 的解集为.

如图所示，在 平面直角坐标系中， 的直角三角形 内存在垂直平面向里的匀强磁场， 边在 轴上，线段 。在第四象限正方形 内存在沿 方向的匀强电场，电子束以相同的速度 沿 方向从 边上的各点射入磁场，已知这些电子在磁场中做圆周运动的半径均为 。电子的电量为 质量为 ，忽略电子之间的相互作用力以及电子的重力。试求：

已知函数 则 的是（   ）

聪明的小明发现许多电学实验的电路组成都十分相似，请利用下列图形中的仪器完成要求的电学实验：

填上合适的单位．

阳阳每天大约睡9；

黑板面的周长大约是12；

小明晚上写作业大约用40；

系红领巾大约需要30．

They ________ at the bottom of the bottle yesterday.

每处错误仅涉及一个单词的增加，删除或修改。增加：在缺词处加一个漏字符号（∧）, 并在其下面写出该加的词。删除：把多余的词用斜线（＼）划掉。修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：每句只有一处错误多改不计分。

    Eric and Sophie were neighbors. One day they were play together. Eric has a collection of marbles(弹珠) while Sophie had some sweets with him. Eric told Sophie what he would give her all his marble in exchange for her sweets. Sophie agreed. Eric kept the biggest and most beautiful marble aside and gave rest to Sophie. Sophie gave all her sweets for him as she had been promised. That night, Sophie slept peaceful. But Eric couldn't sleep as he kept wonder if Sophie had hidden some sweets from him the way he had hidden his best marble.

请同学们根据以下材料，回答下面小题。

在VB程序设计中，窗体与控件统称为对象。每个对象都有各自的属性特征，每个对象都有对用户的操作或系统触发做出响应的多种方式(如图5所示)，我们将这些响应方式统称为“事件”。

图5

   Happiness is for everyone. You don’t need to care about those people who have beautiful houses with large gardens and swimming pools or those who have nice cars and a lot of money and so on. Why? Because those who have big houses may often feel lonely and those who have cars may want to walk on the country roads at their free time.
   In fact, happiness is always around you if you put your hear into it. When you are in trouble at school, your friends will help you; when you study hard at your lessons, your parents are always taking good care of your life and your health; when you get success, your friends will say congratulations to you; when you do something wrong, people around you will help you to correct it. And when you do something good to others, you will feel happy, too. All these are your happiness. If you notice them, you can see that happiness is always around you.
   Happiness is not the same as money. It is a feeling of your heart. When you are poor, you can also say you are very happy, because you have something else that can't be bought with money. When you meet with difficulties, you can say loudly you are very happy, because you have more chances to challenge yourself. So you can't always say you are poor and you have bad luck. As the  saying goes, life is like a revolving (旋转) door. When it closes, it also opens. If you take every chance you get, you can be a happy and lucky person.

建国60多年以来，我国在政治、外交、科技等领域取得了一个个令世人瞩目的成就。仔细观察下列图片资料，根据要求回答问题。

如图甲所示，在顺时针匀速转动的传送带底端，一质量m=1kg的小物块以某一初速度向上滑动，传送带足够长，物块的速度-时间（v-t）图的部分图像如图乙所示，已知sin37°=0.6，cos37°=0.8，求

如图甲为模拟呼吸运动的膈肌运动模型，图乙为肺部气体交换示意图，如表为某部位不同时间测得的气体成分比较，请分析回答：

气体成分	X	Y
氮气	78	78
氧气	21	16
二氧化碳	0.03	4
水	0.07	1.1
其他气体	0.9	0.9

小夏利用如图所示的滑轮组，将重量为300N的物体，在10s内匀速提升了4m。已知他自身的重量为600N，对绳子施加的拉力F=200N，两脚与地面接触的总面积S=400cm² ， 求：

关于热现象，下列说法正确的是（   ）

一物体静置在平均密度为 的球形天体表面的赤道上．已知万有引力常量为G，若由于天体自转使物体对天体表面压力恰好为零，则天体自转周期为

下列有关生物圈中碳﹣﹣氧平衡的叙述中，正确的是（　　）