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江苏省宿迁市泗洪县2023年英语中考一模试题

作者UID:9673734
日期: 2024-11-06
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It's getting colder outside, and you know what that means-it's time for flu season. Why do people get more colds, flu and now COVID-19 when it's very cold outside?

In a new study, scientists have found the answer. It turns out that the cold air itself damages (破坏)the immune response(免疫反应)in our noses.

The nose is an important part of our body's immune system. When a virus goes into the nose, the nose finds it, and the cells(细胞)there begin to create billions of simple copies of themselves called extracellular vesicles(EVs).

"EVs can't divide like cells can, but they are like little mini versions of cells that can kill the viruses, "Benjamin Bleier, the author of the study from Harvard Medical School, told CBS News. "They are like little arms that grab on to the viruses as you breathe them in. "Then, the viruses sticking to EVs will be got out from our body in the form of snot(鼻涕).

However, when cold weather hits, the nose's "superpower" becomes less powerful. The study found that when the temperature inside the nose drops by 5℃, nearly 50 percent of the billions of EVs will be taken out of the fight. "Cold air makes people catch viruses more easily because you have lost half of your immunity", said Bleier.

This is why we should wear masks in winter. "Wearing masks can not only protect us from viruses, but it's also like wearing a sweater on our nose. "Bleier said. The warmer you keep your nose, the better it works to fight against viruses.

In the future, Bleier expects to see the development of medicine 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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"Do you think you can win this competition, Caroline?"mum asked her daughter.

"I don't know, mum. But I'll do my best. "

Caroline always did her best, but it was never enough. She was a good rider, and her horse Applewind was a great horse. She went to Sunshine Stables to ride Applewind. And she never missed a competition. But Sophie was always better than her. Sophie won all of the show jumping competitions, and Sophie's horse Blossom was everybody's darling. Everyone loved Sophie and Blossom.

"If you really want to win, you will win, "her dad said. He said the same thing before every competition.

Caroline sighed. "Dad, "she said. "I want to win, too. But Sophie is too good. "

"You have to be better than her, "Dad said. "If you don't win, I'll sell your horse. No trophy (奖杯), no horse!"

Fred was sorry for his sister. He wanted to help her. But how?Sophie was good. And Blossom was a great horse. Caroline worked hard, but Sophie also worked hard. Suddenly he woke up with a jump.

"Sleep!That's the answer. Dad's sleeping pills!"

It was the day of the competition. It started. Blossom was first. Caroline was next. But there was something wrong.

"And the Spring Cup goes to Caroline Winterbottom on Applewind, "Mr Morley said, as he handed her the big gold trophy.

Caroline was crying. Not because she was sad, but because she was happy.

"Well done, Caroline. "

"Thank you, sir, "she said. And then she asked. "What about Sophie?Is she alright?What happened?"

"We think that Blossom is sick. Sophie had a bad fall but she was lucky. We don't know about Blossom. Her left leg doesn't look good. "

"Oh, I'm so sorry for Sophie, "Caroline said.

"What did I say?"Fred said to his sister. "I knew that you were going to win this time!""I'm so happy, "said Caroline, "but I only won because Blossom was sick. And as soon as Blossom gets better, I'll be coming second place again. "

"Maybe Blossom will be sick again, "Fred said.

"What do you mean?"asked Caroline. "Blossom is never sick. "

Fred looked embarrassed(尴尬). "Well, with a little help she can be sick... "

"Fred, what are you talking about?"Caroline shouted. "Do you know what happened to Blossom?Tell me right away, Fred. "

—From The Spring Cups

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