战胜疟疾(1)
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为什么会有男人和女人?
这是关于人类性别的文章。Why are there males and females? Why are there two sexes instead of three, or twelve, or one? On todays’s Moment of Science we'll learn why two is the magic number. L...
互补栽培植物(1)
套作的作物对养分,土壤和湿度有大体相同的需求。Hints:Fabian Fernandez the University of Illinois Companion planting is the idea that when some crops are planted together, they help each other grow...
慢跑可以长寿噢 (1)
Walter Bortz 博士是一位长寿专家,他说有规律的运动是老年健康的关键。Walter BortzA group of more than 300 runners over the age of 50 were tracked by Stanford University researchers starting in 1984...
是药三分毒(1)
老话讲:“是药三分毒。”要是不同药物混合服用,有可能会有致命的危险Many people take several medicines to treat different conditions at the same time. Each medicine may be safe to use by itself, ye...