Elephants dont need cell phones to hold long distance conversations, their deep calls can travel miles. And although humans cant always hear these vocalizations because of their low frequency, elephants produce them using the same mechanism that lets

发表于:2019-01-08 / 阅读(31) / 评论(0) 分类 Scientific American(八)月

Actor Michael Douglas has become the international face of throat cancer since he announced he had the disease. The actor says his doctors give him an 80 percent chance of beating the cancer. Michael Douglas didn't speak to reporters at the premiere

发表于:2019-01-14 / 阅读(50) / 评论(0) 分类 VOA标准英语2010年(九)月

Larry和李华刚刚忙完手头的工作。他们一起去吃冰激凌。李华今天要学两个常用语:my treat和ginormous. LL: Well, Li Hua, you just finished a big paper, and I just finished an important project at work. Let's go for ice cr

发表于:2019-01-15 / 阅读(59) / 评论(0) 分类 美国之音《流行美语》

Adam's Apple: 喉结 有一个词语叫成长,它会使种子发芽、小树长高,也会让毛头小伙瞬时肩宽臂阔,让黄毛丫头转眼婀娜多姿。不用详细解析,想必您也清楚, Adam's Apple(喉结)亦是成长期第二

发表于:2019-01-21 / 阅读(76) / 评论(0) 分类 英语口语

For adolescent boys, a changing voice that cracks in the middle of a sentence can be a great embarrass-ment. Though embarrassing, a cracking voice is a natural part of adolescent development. As a boy goes through adolescence, his secondary sex chara

发表于:2019-01-22 / 阅读(34) / 评论(0) 分类 英语时差8,16

Listen to the patients' questions to a doctor.Check the correct answers that the doctors may response. 1.What caused my stomachache? 2.Do I need to take medicine? 3.What is this d rill for? 4.Is the cavity serious? 5.Can you do something about the ca

发表于:2019-02-17 / 阅读(52) / 评论(0) 分类 英语听力练习题