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[00:04.31]For Questions 6-10,you'll hear a lecture on Internet. [00:09.87]While you listen, [00:12.83]complete the sentences or answer the questions. [00:17.87]Use not more than 3 words for each answer. [00:22.52]You now have 25 seconds to read the s
最新版英语听力教程
[00:05.69]Before listening to each one,you will have time to read [00:10.14]the questions related to it. [00:13.90]While listening,answer each question by choosing A,B,C or D. [00:20.24]After listening, [00:23.41]you will have time to check your answ
最新版英语听力教程
So we're bound with the laws of physics and the laws of economics. 所以我们需要遵循物理原理以及经济原理。 And so the thought that I started with was how do you do this, still within the boundary of the science we know today 于是我
TED演讲科技篇
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Oh what a tangled web we weave. Or so it may seem, because many social networks eventually evolve into one of just two states. We either all get along, o
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With millions of blogs on the internet, don't blame yourself if you can't keep up with them all. Advertisers are having the same problem. They know that there are substantial audiences who get their news, their humor, their gossip from blogs, but, re
2005年NPR美国国家公共电台
Mimicry in Plants Plant adaptations can be remarkably complex. Certain species of orchids, for instance, imitate female bees, other plants look and smell like dead animals, and still others have the appearance of stones. These strange adaptations to
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