自制肥皂 (1)
Diane Longacre
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- 小学五年级英语
科学60秒:寄生虫的阿基里斯之踵
Every villain has his Achilles' heel. And microscopic scoundrels are no exception. The challenge for those who wish to ____1____ microbial bad guys is to identify that weak spot. Now, scientists ...
自己种番茄 (1)
Hints: IllinoisToday we talk about tomatoes. Tomatoes are generally easy to grow. Experts at the University of Illinois Extension suggest you start seeds indoors if the ground is still cold. For...
我的屋顶花园 (1)
绿色屋顶,集水又节能,还可以保持温度和种菜。 提示:Illinois,Richard DaleyGreen roofs are designed to save energy and capture rainwater. Rooftops covered with plants help keep buildings cool. The...
一起去寻宝吧!(2)
这儿是美国最大颗宝石的发现地,交了门票就可以自己来寻宝,出发吧!Thomas Stolartz says the largest diamond ever found in North America was unearthed here. "Over my right shoulder is the approximate...