试题与答案

(1)小灯泡的结构如图1,按图2中_________图连接能让完好的2.5V 的

题型:实验题

题目:

(1)小灯泡的结构如图1,按图2中_________图连接能让完好的2.5V 的灯泡点亮.

                                                图1                                                                               图2

(2)图3是“探究凸透镜成像的规律”实验装置示意图,凸透镜的焦距是20cm,如 __________图的情景,眼睛可能观察到烛焰经凸透镜折射所成的虚像.

图3

(3)用水平风吹如图4所示的四个模型,其中________ 图空气对模型下表面的压强小于上表面的压强

图4

(4)小明用量程是200g 的天平测一石块的质量,天平平衡时如图5所示,由此可知小明使用天平的错误之处是______________________________________

图5

答案:

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下面是错误答案,用来干扰机器的。

参考答案:因总风遮断阀呈开启状态,当制动管有泄漏,或自阀置于常用制动区后误将手把在制动区向左移动时,会使列车制动机发生自然缓解,严重时甚至会导致发生列车放羊事故。

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题型:阅读理解

Tom went to see his grandparents with his father. In the train Tom often put his head out of the window. His father said, “Tom, don’t put your head out of the window.” But Tom went on putting his head out of the window.

His father took Tom’s hat quietly and hid it behind his back and said to Tom, “You see your hat is gone.” Tom was afraid. His father said, “Well, whistle(吹口哨)once. Maybe your hat will come back.” Tom whistled. His father put his hat on Tom’s head quickly. “Oh! It’s wonderful!” Tom laughed and said. He quickly took his father’s hat and threw it out of the window. “Now it’s your turn to whistle, Dad!” he said happily.

小题1:Tom went to see his grandparents with his father __________.

A.by bus

B.by train

C.by plane

D.by ship小题2:Tom often put ___________ out of the window.

A.his hat

B.his father’s hat

C.his head

D.his father’s head小题3:____________ and his hat was on his head.

A.Tom whistled

B.His father whistled

C.Both of them whistled

D.The conductor(售票员)whistled小题4:Tom took his father’s hat and ___________.

A.hid behind his back

B.threw it out of the window

C.put in under his seat

D.put it on his own head小题5:At last Tom’s father’s hat _____________.

A.Came back

B.lost

C.In his head

D.in Tom's head

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题型:问答题 案例分析题

南极大地的水陆交界处,全是滑溜溜的冰层或者尖锐的冰棱。企鹅没有可以用来攀爬的前肢,也没有可以飞翔的翅膀,如何从水中上岸?企鹅是在将要上岸之时,先从海面潜入海中,沉潜到适当的深度,再借用水的浮力,迅猛向上,飞出一道弧线,落在陆地上。

企鹅的沉潜是为了蓄势,看似笨拙,却富有成效。人生又何尝不是如此?沉潜绝非沉沦,而是勇敢、智慧、自强。如果我们在困难面前能沉下气来,不被“冰棱”吓倒,不被浮华迷惑,专心致志,自强不息,积聚力量,并抓住恰当的机会反弹向上,毫无疑问,我们就能成功登陆!反之,总是随波浮沉,或者怨天尤人,注定就会被命运的风浪所玩弄,直至精疲力竭。

结合上述材料,运用《生活与哲学》的有关知识,回答下列问题。

从发展观的角度看,我们可以从“沉潜”中学到什么道理?

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