对急性中耳炎的描述下列错误的是（）。 A.即鼓室的炎症 B.与咽鼓管阻塞有关 C.与

When I was growing up, I was embarrassed to be seen with my father. He (1) severely crippled and very short, and when we would walk together, his hand on my arm (2) balance, people would stare. I would inwardly be afraid (3) squirm at the unwanted attention. If he ever noticed or was bothered, he never let (4) .
It was difficult to coordinate (5) steps - his halting, mine impatient - and because of that, we didn’t say much as we went along. But as we started out, he always said, "You (6) the pace. I will try to adjust to you. "
Our usual walk was to or (7) the subway, which was how he got to (8) . He went to work sick, and (9) nasty weather. He almost never missed a day, and would (10) it to the office even if (11) could not: a matter of pride!
He never talked about himself as an object of pity, (12) did he show any envy of the more fortunate or able. What he looked for in others was a "good heart", and if he found one, the owner was good enough for him.
Now that I am older, I believe that is a proper standard (13) which to judge people, even though I still don’t know precisely (14) a "good heart" is. But I know the times I don’t have one myself.
He has (15) gone many years now, but I think (16) him often. I wonder if he sensed my reluctance to be seen with him during our (17) . If he did, I am (18) I never told him how sorry I was, how unworthy I was, how I regretted it. I think of him when I complain about trifles, when I am (19) of another’s good fortune, when I don’t have a "good heart".
At such times I put my hand on his arm to regain my (20) , and say, "You set the pace, I will try to adjust to you.\

（1）二氧化硫的催化氧化的过程如图1所示，

其中a、c二步的化学方程式可表示为：SO₂+V₂O₅⇌SO₃+V₂O₄

4VOSO₄+O₂⇌2V₂O₅+4SO₃．

该反应的催化剂是______（写化学式）

（2）550℃时，SO₂转化为SO₃的平衡转化率（α）与体系总压强（p）的关系如图2所示．将2.0molSO₂和1.0molO₂置于5L密闭容器中，反应达平衡后，体系总压强为0.10MPa．试计算反应2SO₃⇌2SO₂+O₂在550℃时的平衡常数K=______．

（3）550℃时，将2.0molSO₂和1.0molO₂置于5L密闭容器中，反应达平衡后，下列措施中能使

A．升高温度B．充入He（g），使体系总压强增大

C．再充入2molSO₂和1molO₂D．再充入1molSO₂和1molO₂

（4）维持温度不变条件下使之发生如下反应：2SO₂+O₂⇌2SO₃，有两只密闭容器A和B．A容器有一个可以移动的活塞能使容器内保持恒压，B容器能保持恒容．起始时向这两个容器中分别充入等物质的量的体积比为2：1的SO₂和O₂的混合气体，并使A和B容积相等（如图3所示）．

试填写下列空格：

A容器达到平衡时所需的时间比B容器______（填：“短”或“长”）；平衡时A容器中SO₂的转化率比B容器______（填：“大”或“小”）；达到所述平衡后，若向两容器中通入等物质的量的原反应气体，达到平衡时，A容器的混合气体中SO₃的体积分数______（填“增大”、“减小”或“不变”，下同）；B容器的混合气体中SO₃的体积分数______．

如图所示，用钢尺快速击打下面的一颗棋子，可以发现这颗棋子被击飞而上面的那些棋子仍然留在原处落在正下方，上面的那些棋子没有飞出是因为这些棋子具有      ．下面的那颗棋子被击后飞出去，说明力可以改变物体的              ．

疑有隐匿型糖尿病者，常需做的检查项目是（）

A.血清胰岛素测定

B.尿糖测定

C.空腹血糖测定

D.血清C肽测定

E.葡萄糖耐量试验

工具显微镜是一种在生产中应用得很广泛的仪器，它可测量内外尺寸、切削刀具角度、（）、（）、角度以及锥度等各种参数。