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This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left. Now scientists at the Nation

发表于:2018-12-24 / 阅读(44) / 评论(0) 分类 Scientific American(四)月

[00:05.49]Why are some people left-handed? [00:09.09]Scientists have been trying to answer that question for many years. [00:14.32]Research has shown that ninety percent of people naturally use their right hands for most tasks. [00:22.94]But hundreds

发表于:2018-12-26 / 阅读(21) / 评论(0) 分类 美国英语听力80篇

Last Dance Donna Summer Last dance Last chance, for love Yes, it's my last chance, for romance, tonight I need you, by me, Beside me, to guide me, To hold me, to scold me, 'Cause when I'm bad I'm so' so bad So let's dance, the last dance Let's dance,

发表于:2019-01-10 / 阅读(29) / 评论(0) 分类 奥斯卡最佳英文歌曲

经过对剑桥雅思听力题的总结,我们发现,许多题目存在着比较关系,破解了题目中的比较关系,也就可以正确解题。下面,我们就来为大家讲一讲雅思听力题中的比较关系。 在这里,我们把

发表于:2019-02-09 / 阅读(78) / 评论(0) 分类 雅思英语

Language Points A: Are you ok? You seem a bit anxious. B: Yeah I'm OK, I have been having alot of mood swings lately. I think it has to do with the pills my doctor prescribed that are causing chaos on my hormones. anxious:焦虑 mood swings: 情绪波

发表于:2019-02-15 / 阅读(49) / 评论(0) 分类 爆笑英语口语

新GRE阅读主要考验我们逻辑推理能力,在中国很少进行着方面的训练。逻辑推理能力在阅读中考察,从宏观上把握文章,抓住文章的主体结构是关键。下面为大家进行3种常见的GRE阅读主题结构

发表于:2019-02-17 / 阅读(33) / 评论(0) 分类 GRE英语