内容正文:
【2024届高考】英语作业考试化40分钟卷系列之
最新模拟题 七选五 36
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反思:
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
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(2024·山西晋中·模拟预测)Whether it is the flu or any of the other cold-like viruses rising in winter, it seems that stuffy noses and sore throats are common symptoms. You may have noticed, however, that your cold seems to get better or worse depending on the time of day. Most commonly, you wake up with worse symptoms. Then, they partially clear up throughout the day, only to get worse once more as you get to bed. 1
Currently, the leading idea is that symptom severity is linked to our circadian rhythm (昼夜节律). The circadian rhythm is very important for daily cellular processes. 2 It also plays a critical role in controlling the heart and the immune system.
3 This is why sleep is so important after you’ve been to the gym. This also applies when you are ill—the body floods the blood with white blood cells called leukocytes, resulting in and immune response against diseases and the immune system fighting infection.
This, therefore, explains why our cold symptoms get worse as we settle down for a night’s sleep. Cells infected by viruses are attracted to the local area and killed, causing soreness in the affected tissues, and mucus (鼻涕) floods the nose to join the fight. 4 You wake up feeling like death due to the battle happening within.
There are other reasons why you might feel worse at night. The first is simply gravity. When you lie down, your mucus builds up in the nose, causing pressure and headaches. 5 Another factor is about hormones. Hormonal imbalances can be caused by lack of sleep at night and could influence immune function, leading to a cycle of sleepless night s and then feeling worse.
A.Why does this happen