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  • 更新 2022-09-03
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任务型阅读 (共10小题;每小题1分,满分10分)
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Aspirin has been called a wonder drug because it has so many applications. As opposed to most drugs, which have a single purpose, aspirin is a pain reliever, a fever reducer, and a blood thinner all in one. Scientists didn’t begin to truly understand how aspirin works until the 1970s, but we now know that aspirin prevents cells from producing prostaglandins (前列腺素), chemicals that carry pain messages from damaged cells to the brain.
Preventing prostaglandin production is also how aspirin helps keep blood flowing through the cardiovascular (心脏血管的) system. Aspirin shuts down the production of many types of prostaglandins, one of which causes blood cells to stick together and helps prevent clots (凝块). By preventing this particular prostaglandin’s production, aspirin thins the blood. Many people with heart disease take a low dose of aspirin every day as a preventative measure against heart attacks and strokes. While it’s not known exactly how aspirin reduces fevers, modern physicians and researchers believe that aspirin acts on the hypothalamus (下丘脑), the part of the brain that regulates autonomic functions, including body temperature.
Because of its long history and roots in traditional medicine, aspirin is often thought to be completely safe and harmless, but unfortunately, even a wonder drug can have some downsides. Doctors warn people with clotting problems against taking aspirin, since it can make clotting disorders worse, and it shouldn’t be taken for lengthened periods of time after operations, since it can slow healing by preventing blood from clotting. Aspirin is particularly inadvisable for children, because kids who take aspirin (especially for things like fevers and the flu) are more likely to develop a deadly nervous-system disorder called Reye’s syndrome.
It’s worthwhile keeping a bottle of regular aspirin in the house. Besides coming in handy for various aches and pains, aspirin is also helpful in several household applications.
Aspirin is highly effective at reducing the redness caused by insect bites. Wet the area and put an aspirin tablet on the spot. Cut flowers will last longer if their water includes a crushed-up aspirin tablet. Because it contains salicylic acid, aspirin also works to reduce the appearance of pimples (脓疱). Putting an aspirin paste on a pimple will help dry it out and get rid of the redness.
If you find that your white T-shirts accumulate yellow stains, aspirin can fix those, too. Break a few pills into pieces, mix them with some warm water, and wet the stains with the solution before washing—the aspirin will make the shirts look as good as new. Aspirin has also been recommended for bringing dead car batteries back to life and removing chlorine (氯) buildup from the hair of people who swim frequently in pools.
Considering all the things aspirin can do, modern medicine would be hard pressed to come up with something better.

An Aspirin a Day Keeps Everything Away
Passage outline
Supporting details
Medicinal applications of aspirin
______ pain by preventing cells from producing prostaglandins, which carry pain messages from damaged cells to the brain thinning blood and helping prevent clots by _______ down the production of a particular prostaglandin, which leads to blood cells _________ together reducing fevers by acting on the part of the ________ regulating autonomic functions, body temperature ________
Downsides of aspirin
worsening clotting________slowing healing causing a deadly nervous-system disorder called Reye’s syndrome
________ applications of aspirin
reducing the redness caused by insect bites effectively
enabling cut flowers to _______ longer reducing the appearance of pimples removing yellow_______ from white T-shirts bringing dead car batteries back to life removing chlorine buildup from the hair of people swimming ______ in pools
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任务型阅读(共10小题;每小题1分,满分10分)请认真阅读下