戰(zhàn)勝瘧疾(1)
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- 英文單詞書
為什么會(huì)有男人和女人?
這是關(guān)于人類性別的文章。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...
慢跑可以長壽噢 (1)
Walter Bortz 博士是一位長壽專家,他說有規(guī)律的運(yùn)動(dòng)是老年健康的關(guān)鍵。Walter BortzA group of more than 300 runners over the age of 50 were tracked by Stanford University researchers starting in 1984...
收養(yǎng)孤兒
目前有超過十萬的美國兒童在看護(hù)中心,每個(gè)人平均得等三年才會(huì)有家庭愿意收養(yǎng)他們...More than 100,000 American children are currently in foster care, and they wait an average of three years to find a ...
是藥三分毒(1)
老話講:“是藥三分毒?!币遣煌幬锘旌戏?,有可能會(huì)有致命的危險(xiǎn)Many people take several medicines to treat different conditions at the same time. Each medicine may be safe to use by itself, ye...