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Most of us blink without thinking. But people whove sustained strokes or combat injuries can lose their ability to blink. Which is important for lubricating and cleaning the eye. Surgery is an optiona small piece of muscle transplanted from the leg c

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This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor

SSS 2011-02-07

Patients undergoing coronary bypass surgery need implants of new, healthy blood vessels. So do those who receive repeated hemodialysis due to kidney failure. The best option is to use the patient's own veins or arteries, but thousands of patients don

SSS 2011-04-06

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene

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英语简历并无固定不变的单一形式，应聘者完全可以根据个人的具体情况来确定采用何种形式，灵活设计。一般来说，根据个人经历的不同侧重点，可以选用以下三种形式： （1）以学历为主的

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托福常用词汇表

托福常用词汇表

星火英语四级2000核心词 13

[00:13.00]Day 13 [00:15.00]exception [00:17.00]All students without exception [00:19.00]must take the English examination. [00:23.00]excessive [00:24.00]I find her attention to her children rather excessive. [00:30.00]exert [00:31.50]The government m