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问题 问答题

甲、乙、丙是三个实验的示意图，根据图中所发生的化学反应现象及化学反应原理，进行总结归纳并回答下列问题：

⑴所发生的三个反应有多个共同的特点，分别是（只写三个即可）

①　　　　　　　　　；②　　　　　　　　　；③　　　　　　　　　。

⑵任选上述实验中的一个，写出反应的化学方程式　　　　　　　　　　　

答案

⑴①都是化合反应　　　②生成物都是氧化物　　③反应都放出大量的热

④反应条件都是点燃　⑤都是气体与固体反应　⑥都是物质与氧气的反应

⑵　略

硫、磷、铁和氧气反应有许多共同的特点，例如反应类型方面、是否放热方面、反应条件方面．

①都是化合反应．

②、都是氧化反应．

③、反应都放出大量热．

④、反应条件都是点燃．

⑵S+O2SO2．

单项选择题

阅读下面短文，从短文后各题所给的四个选项（A、B、C 和 D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

                                    A Heroic Driver

Larry works with Transport Drivers. Inc. One morning in 2009. Larry was  41

along 165 north after delivering to one of his    42   . suddenly, he saw a car with its bright lights on.    43    he got closer, he found 44    vehicle upside down on the road. One more look and he noticed    45    shooting out from under the    46    vehicle. Larry pulled over, set the brake and    47   the fire extinguisher (灭火器). Two good bursts from the extinguisher and the fire was put out.

The man who had his bright lights on    48    and told Larry he had    49    an emergency call. They    50    heard a woman’s voice coming from the wrecked (毁坏的) vehicle.    51   the vehicle, they saw that a woman was trying to get out of the broken window. They told her to stay    52    until the emergency personnel arrived,    53    she thought the car was going to    54   . Larry told her that he had already put out the fire and she should not move    55    she injured her neck.

Once fire and emergency people arrive, Larry and the other man    56    and let them go to work. Then, Larry asked the    57    if he was needed or    58    to go. They let him and the other man go.

One thing is    59   —Larry went above and beyond the call of duty by getting so close to the burning vehicle! His    60    most likely saved the woman’s life.

50（）

A.then

B.again

C.finally

D.even
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单项选择题

对心律失常患者进行病史采集时，下列哪项不能提供对诊断有用的线索（）

A.心律失常的存在及其类型

B.心律失常的诱发因素，如烟、酒、咖啡、运动及精神刺激等

C.心律失常发作的频繁程度、起止方式

D.心律失常是触发机制还是自律性增高

E.心律失常对药物和非药物方法（如体位、呼吸、活动等）的反应
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