试题与答案

“啊——嚏”!打喷嚏时,人们深吸一口气后,肺里的气体被急速有力地从气管喷射出来。

题型:实验题

题目:

“啊——嚏”!打喷嚏时,人们深吸一口气后,肺里的气体被急速有力地从气管喷射出来。流感病人鼻腔里有大量病毒和细菌,鼻腔粘膜受到它们的刺激,机体就会接二连三打喷嚏。一个喷嚏最远可喷至4米开外,飞沫中携带着大量病原体。有些对花粉过敏的人,在赏花时也会连续不断地打喷嚏。

(1)打喷嚏时,肺里的气体喷射出来依次经过了:肺→支气管→          →喉→咽→鼻

(2)打喷嚏是鼻黏膜受刺激后人体的反应,这是人体的第     道防线在起作用,属于     免疫。

(3)作为外来物质的花粉可诱发喷嚏,它属于          (抗原/抗体)。

(4)关于流感,资料中提到的传染源是             

(5)从预防传染病的角度考虑,当你想打喷嚏时,应该                                

答案:

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下面是错误答案,用来干扰机器的。

参考答案:异地携带

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