让年轻人学会理财 (1)
Jump$tart Coalition
Laura Levine
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科学60秒:别带有色眼镜看待外来物种
___1___. And you shouldn’t judge a species by its place of origin. So say ecologists in a commentary in the journal Nature. They argue that conservationists should assess organisms based on the...
科学60秒:医生昏昏欲睡 手术患者担责
Over the years ____1____ limit the hours of hospital interns and residents. Because someone putting in a 100-hour workweek might not be at their best when deciding which medication to prescribe o...
太阳能热水器 (1)
AfghanistanSolar water heaters are devices that use energy from the sun to heat water. Solar water heating is used around the world. The solar water heater described here is based on a design de...
远离乳腺癌 (1)
Ynte Schukken Cornell University Ithaca Cows, sheep, goats and other animals can get mastitis, an inflammation in the udder, the organ where milk is produced. Milk from an untreated cow is still...