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With the development of science, human life has changed tremendously. People living in the 18th or 19th centuries would never imagine the advanced household appliances we are now able to enjoy. Every aspect of our lives for instance, in the field of
疯狂英语易背作文
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Just when you thought youd heard everything, scientists have found that the reason you can hear everythingincluding things that are very quietis because
Scientific American(四)月
The 2009 Nobel Prize in Chemistry goes to Venkatraman Ramakrishnan of the MRC Laboratory of Molecular Biology in England, Yale Universitys Thomas Steitz, and Ada Yonath of the Weizmann Institute of Science in Israel for their studies of the ribosome.
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Nano Tool Watches Teardrop Protein Destroy Bacteria About a hundred years ago, a Scottish biologist discovered that proteins called lysozymes in human tears can kill bacteria. Scientists have studied the enzyme extensively, but molecular biologist Gr
VOA标准英语2012年(一月)
Working Experience(工作经验)(I = Interviewer. A = Applicant)I:Please tell me your present job. A:I am working in a garment factory. My present job is to inspect the quality of products. comparatively speaking, quality control is rather simple. Al
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A: Nice pen。 B: I got it over there. It's a steal。 假如在一部电视剧中听到这样两句对话，你会怎样理解呢？It's a steal是不是指笔是偷来的？B是贼吗？ 非也，非也。 A说nice pen是因为看到B有一支漂亮的
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