《2025年学霸题中题八年级英语上册译林版》

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跨学科 生物 It’s getting colder outside and you know what that means—it’s time for flu season. Why do people get more colds or some flu when it’s chilly outside?
In a new study, scientists have found the a1. It turns out that the cold air itself damages the immune response(免疫反应) in our noses.
The nose is an i2 part of our body’s immune system. When a virus(病毒) goes into the nose, the nose detects it, and the cells there begin to create billions of simple copies of themselves called extracellular vesicles(EVs).
“EVs can’t divide like cells, b3 they are like little mini versions of cells that can kill the viruses,” Benjamin Bleier, the writer of the study from Harvard Medical School, told the reporter. “They are like little arms that grab on to the viruses as you breathe them in. Then, the viruses sticking to EVs will be expelled(排出) f4 our body in the form of snot.”
However, when cold weather a5, the nose’s “superpower” becomes less powerful. The study found that when the temperature inside the nose d6 by 5℃, nearly 50 per cent of billions of EVs will be taken out of the fight. Cold air makes people catch viruses more e7 because “you’ve lost half of your immunity”, said Bleier.
“This is w8 we should wear masks in winter. Wearing masks can not only p9 us from viruses, but it’s also like wearing a sweater on our nose,” Bleier said. The w10 you keep your nose, the better it works to fight against viruses.
In the future, Bleier expects to see the development of nasal medications(鼻腔用药) that build upon this new finding. Scientists may find a way to “fool the nose into thinking it has just seen a virus”, Bleier said.
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答案： 1. answer 2. important 3. but 4. from 5. arrives
6. drops 7. easily 8. why 9. protect 10. warmer