流行性感冒 (1)
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- 小学六年级英语
科学60秒: 趣味故事保障食品安全
Tis' the season when we’re eating. And we want to be sure that the kitchen staff are following protocols that keep us from getting sick. So ____1____ help them learn those rules? The answer, it
科学60秒:御光而行
Think about flying and you no doubt think about air. The wind in your face, the wind at your back, the wind beneath your wings. Now physicists note that light can also ____1____. Their work appea...
短文:人口增长
Population GrowthThe growth of population during the past few centuries is no proof that population will continue to grow straight upward toward infinity and doom. On the contrary, demograph...
IMF总裁吁改革国际货币体系
VOAIMF chief Dominique Strauss-Kahn said that even though the global recovery is underway, the international monetary system still needs to be reformed. "Global imbalances are back. Large and v