在PTE中,无论是Summarise Spoken Text 还是 Re-tell Lecture的考题大都是从真实的讲座或者演讲中截取的中间经常经常夹杂很多不同的环境音.很多同学都反映有时未必是听不懂,而是听不到. 鉴于此,墨尔本悉尼文波雅思PTE专门为大家总结了真实讲座的PTE练习音频,相比新闻音频来说,整体更加接近PTE考试的真题,内容方面,我们也会为大家提供考试中存在的近似题,最近我们会持续更新,敬请期待!
The human brain has about 10 billion brain cells. Each brain cell can have as many as 25,000 connections with other cells. Messages which direct many functions throughout your body travel through your brain form cell to cell through these connections. For these signals to move from a sending cell to a receiving cell. They must cross the small gap called the Synapse. Chemicals called Neurotransmitters located at the ends of sending cells help the signal cross this gap. Serotonin is one such neurotransmitter, a very important one that helps regulate mood, emotions and other body functions. After the serotonin has done its job, it’s reabsorbed by the sending cell and soon back in position to help with the next nerve signal. If you have depression, you may have Serotonin imbalance. Your overall level of serotonin may be low, and some of them maybe reabsorbed too soon. As a result, communication between the brain cells is impaired, and SSRI or selective serotonin reuptake inhibitor, is a medication design to help increase the amount of serotonin in the synapse by blocking its reabsorption. As serotonin builds up, normal communication between cells can resume, and your symptoms of depression may improve.
