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美国科学60秒 SSS 2015-05-22
Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到 听力原文收集区 ，您将会获得10到30积分的奖励! Thank you！ 科学美国人60秒
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美国科学60秒 SSS 2015-05-25
Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到 听力原文收集区 ，您将会获得10到30积分的奖励! Thank you！ 科学美国人60秒
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美国科学60秒 SSS 2015-05-26
Foldable white canes help the visually impaired navigate their surroundings, but the guide stick's tactile (preceptible by touch or apparently so) nature offers only so much information. The cane's user must manually find and avoid obstructions, but
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美国科学60秒 SSS 2015-05-27
Mummies, there are the staff of art movies and happy archaeologists. Now the American association of anonymous sceptered their attention to mummies * entire latest issue of their journal, then * record to the subject. Papers in addition, comber topic
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美国科学60秒 SSS 2015-05-28
This is Scientific American - 60 Second Science. I'm Dylan *. Got a minute? The first murder victim in the Bible is Abel, taken out by his brother, Cain. And now we have what looks to be the earliest known homocide to be confirmed by scientists. A ne
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美国科学60秒 SSS 2015-05-29
Some 70 million American adults have high blood pressure. Three quarters of them rely on medication to keep the condition in check. But you've got to remember to actually take the daily dose. Now researchers have devised a longer-lasting alternative:
