四級(jí)考試是許多童鞋必須通過(guò)的考試，其重要程度不言而喻。希望通過(guò)四級(jí)聽(tīng)力天天練，童鞋們可以提高聽(tīng)力水平，高分通過(guò)四級(jí)，沖刺六級(jí)。
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Section C
Americans are suffering from a serious problem of sleeping less. ____1____ A world that “never goes to sleep” offers many diverse activities, but encourages unhealthy and sometimes anti-social lifestyles for America's adults. Instead of working to live, they are living to work, a shift that has had a deep impact on their personal lives. Adults report spending less time sleeping but more engaging in social and leisure activities. ____2____ These are the key findings in the National Sleep Foundation's 2001“Sleep in America” poll, which looks at the relationship between American's lifestyles, sleep habits and sleep problems. Loss of sleep continues to be widespread in America. ____3____ In fact, nearly 1/3 report sleeping less than seven hours each weeknight, though many adults say they try to sleep more on weekends. The poll shows both good news and bad news. ____4____ And they would sleep more if they were convinced it would contribute to their quality of life. The bad news is far too many adults still sacrifice sleep, which is an unhealthy way of life. Perhaps further study should be made to help them get rid of the terrible lifestyle.