简奥斯汀（Jane Austen，1775年12月16日－1817年7月18日）是英国著名女性小说家，她的作品主要关注乡绅家庭女性的婚姻和生活，以女性特有的细致入微的观察力和活泼风趣的文字真实地描...

阅读材料： Genetic modification, a process used to change an organisms genes and hence its characteristics, is not being used to improve trees. Through genetic modification, it is possible to create trees that produce more fruit, grow...

阅读材料： Car manufacturers and governments have been eagerly seeking a replacement for the automobiles main source of power, the internal-combustion engine. By far, the most promising alternative source of energy for cars is the hydr...

阅读材料： In the past century, the steady growth of the human population and the corresponding increasing in agriculture and pesticide use have caused much harm to wildlife in the United States birds in particular. Unfortunately for b...

阅读材料： Many consumers ignore commercial advertisements. In response, advertising companies have started using a new tactic, calling buzzing. The advertisers hire people buzzers who personally promote (buzz) products to people they...

阅读材料： In the United States, it had been common practice since the late 1960s not to suppress natural forest fires. The let it burn policy assumed that forest fires would burn themselves out quickly, without causing much damage. Ho...

阅读材料： In the 1950s Torreya Taxifolia, a type of evergreen tree once very common in the state of Florida started to die out. No one is sure exactly what caused the decline, but chances are good that if nothing is done, Torreya will...

阅读材料： The cane toad is a large (1.8 kg) amphibian species native to Central and South America. It was deliberately introduced to Australia in 1935 with the expectation that it would protect farmers crops by eating harmful insects....

登录ETS官方网站http://www.ets.org/，在页面中部的Tests下面选择GRE ，接下来在GRE页面的右侧选择Order Additional Score Reports...

因为单词是万事的基础，所以决定把单词提到前面来写。 1. 考拉的背词经历： 最一开始背单词的时候，郑老师扔给我们三个人一人一本专四单词，说，背吧，每天背100个单词，一周背...