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This is the VOA Special English Health Report. Heparin is a blood-thinning medicine made from pig intestines, which often come from small farms in China. The drug is often used to prevent blockages during kidney dialysis treatment and different opera
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This is the VOA Special English Health Report. An allergy is an unusually strong reaction to a substance. Many things can cause allergies. The most common cause is pollen. Trees usually produce pollen in the spring, grasses in the summer and weeds in
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2012 考研写作样句 5、If you should have any difficulty in getting immersed into the new environment, the Students' Union, me included, will always be there for you. 【译文】如果你们在融入新环境中碰到任何困难，学生会，包
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This is Scientific American's 60-Second Science. I'm Karen Hopkin, this'll just take a minute. Next time you are shoveling snow off your walk, don't blame the weatherman, blame bacteria. Because an international team of scientists has found that micr
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Facebook Reactions Much More Than a Like The Facebook like button was one of the social media websites most popular features. But now Facebook has added more emojis that users can click on to quickly express their feelings about a post. The five new
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How Cells Get Around 漫步的细胞 A major reason why many cancers are so dangerous is that they metastasize . This means that instead of staying in one place, the cancer cells migrate from their original site to other parts of the body. No wonder
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