单词：Silica-Amorphous
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Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,
英语听力文摘 English Digest
By Leta Hong Fincher Most Americans paid little attention to the dangers of terrorism until al-Qaida 's September 11th, 2001 terrorist attacks on New York and Washington that killed thousands. But pol
VOA2004（下）--新闻盘点
AS IT IS 2015-07-14 Silica Sand Mining Worries Communities 美国硅砂矿引发社区担忧 The United States is increasing production of oil and natural gas through a process known as fracking. This process is sometimes called hydraulic fracking be
2015年VOA慢速英语(七)月
AILSA CHANG, HOST: Despite mounting evidence and a stream of dire warnings, federal regulators and mining companies failed to protect coal miners from toxic dust. MARY LOUISE KELLY, HOST: NPR and the PBS series Frontline spent more than a year lookin
2018年NPR美国国家公共电台12月
Truly happy and successful people get that way by becoming the best, most genuine version of themselves they can be. Not on the outside--on the inside. It's not about a brand, a reputation, a persona. It's about reality. Who you really are. 真正快乐
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Here are 9 ways to be a better person through self-development: 下面9个自我提升的方法有助于成为更好的人： 1. Be Willing To Change 愿意改变 In order to become a better person, you have to be willing to change. Change is the onl
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