Devils Lake is where I began my career as a limnologist in 1964, studying the lakes neotenic salamanders and chironomids, or midge flies. Back then, the lake covered about 80 square kilometers, had a maximum depth of about 3 meters and held... 详情>>
2019-07-12
TECHNOLOGY advances not only through new inventions, but also by the imaginative application of old ones. And one of the most ancient forms of scientific investigation, the post-mortem autopsy, may be ripe for just such a technological upgr... 详情>>
2019-07-12
From The Economist print edition 1 REFRIGERATORS are the epitome of clunky technology: solid, reliable and just a little bit dull. They have not changed much over the past century, but then they have not needed to. They are based on a robus... 详情>>
2019-07-11
1 NEELIE KROES, the European Unions competition commissioner, did not mince her words when reporting on Europes energy markets on Wednesday January 10th. Europes energy firms have failed to invest in networks and so customers are suffering.... 详情>>
2019-07-11
Thursday January 11, 2007 The Guardian1. British scientists are preparing to launch trials of a radical new way to fight cancer, which kills tumours by infecting them with viruses like the common cold. 2. If successful, virus therapy could... 详情>>
2019-07-11
Reading Passage 1 You should spend about 20 minutes on Questions 1-14 which are based on Reading Passage 1 below. Next Year Marks the EUs 50th Anniversary of the Treaty A. After a period of introversion and stunned self-disbelief, continent... 详情>>
2019-07-11
Roxanne Khamsi New evidence has linked a commonly prescribed sleep medication with bizarre behaviours, including a case in which a woman painted her front door in her sleep. UK and Australian health agencies have released information about... 详情>>
2019-07-11
Food agency takes on industry over junk labels Felicity Lawrence Thursday December 28, 2006 The Guardian 1. Consumers are to be presented with two rival new year advertising campaigns as the Food Standards Agency goes public in its battle w... 详情>>
2019-07-11
首先，我们来看一下剑桥6P91的Q17。 As a result, factors such as 17_______ and attitudes to children have been eliminated ... 文中出现了我们非常熟悉的and结构，找到attitudes基本上距离答案就不远了。另外... 详情>>
2019-07-11
1. abide by（=be faithful to ; obey）忠于；遵守。 2. be absent from…. 缺席，不在 3. absence or mind（=being absent-minded） 心不在焉 4. absorb（=take up the attention of）吸引…的注意力（被动语态）:be abs... 详情>>
2019-07-11
