专题05 阅读理解之说明文10篇（第三期）-2023高考英语浙江省名校模拟真题速递

2023高考英语浙江省名校模拟真题速递 第三期 专题05 阅读理解之说明文10篇 （2022秋·浙江·高三校联考一模）The title of psychiatrist Anna Lembke’s book, Dopamine Nation: Finding Balance in the Age of Indulgence, refers to the crucial yet destructive role that dopamine (多巴胺) plays in modern society. Dopamine, the main chemical involved in addiction, is secreted from nerve tracts (神经束) in the brain following a rewarding experience such as finding food, clothing or shelter. Nature has designed our brains to feel pleasure when these experiences happen because they increase our odds of survival. But the days when our species struggled for survival are over. Dopamine Nation explains how modern life has made us vulnerable to dopamine related addiction. Today, social media is often the addictive substance of choice. Lembke found that feel-good substances and behaviors increase dopamine release. The brain responds by decreasing overall dopamine transmission. Repeated exposure to similar stimuli creates a chronic dopamine shortage state, wherein we’re less able to experience pleasure. There are two risk factors for addiction: easy access and speedy reward. The smartphone is like a heroin (海洛因) needle, delivering digital dopamine for a wired generation. It delivers images to our visual cortex (大脑皮层) that are tough to resist. Social-media apps like TikTok cause the release of large amounts of dopamine, just like heroin, making us vulnerable to overconsumption. Our brains cannot process the comparisons the virtual world demands. We can become overwhelmed by our inability to measure up to “perfect” people who exist only in the Matrix, and may sink into depression. Social media often feels good while we’re using it, but horrible when we stop. Luckily, there is an antidote: a timeout—at least for a day. However, more time is needed away from our drug of choice, whether it’s heroin or Instagram. A monthlong dopamine fast will decrease the anxiety that social media causes, and enhance our ability to enjoy more modest rewards agai