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雅思阅读文章中的信号词就好比是高速公路上的标识牌，见到了它们，就可以知道目的地距离自己的位置还有多远，需要直走，还是拐弯。考生应根据这些信 号词来判断应该采取精读.跳读或是
雅思英语
People start stereotyping early. Even toddlers react positively to members of their own race, but often distrust those from different groups. The seeds of racism are planted in most everyone. Everyone, that is, except people with a rare genetic condi
60秒科学
People start stereotyping early. Even toddlers react positively to members of their own race, but often distrust those from different groups. The seeds of racism are planted in most everyone. Everyone, that is, except people with a rare genetic condi
Scientific American(四)月
Under UV light, this mosquito larva reveals a red fluorescent marker in its nervous system, causing eyes and nerves to glow. The marker's presence tells the researchers in Riehle's team that this individual carries the genetic construct rendering it
VOA标准英语2010年(七)月
Selective Breeding Molds Foxes into Pets狐狸变成狗 Want to make a dog? Well, wolves evolved into dogs at least once. But it turns out you can also make whats basically a dog by starting with wild foxes. Select the ones that do not seem to want t
2017年科学美国人(五)月
If you frequently find yourself covered in mosquito bites, while others escape without so much as an itch, you can blame your genes. 如果你发现蚊子特别喜欢叮你，而其他人都安然无恙，这其实与你的基因有关。 For British
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