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闭着眼睛飘单词 四级词汇
Broadcast: Mar 13, 2003 Researchers are developing a blood test to look for colon cancer. The blood test is designed to detect 2) abnormalities in genes that control cell growth. These genes are passe
VOA2003（上）-科技先知
China has long depended on coal-burning power plants to fuel its explosive growth over the past three decades. As a result, air pollution has risen to alarming levels in central and eastern regions. Policymakers have been working hard to shift the co
2017CRI中国国际广播电台
By Greg Flakus Austin, Texas 17 July 2007 The attempted bombings in London and Glasgow last month and the release of purported tapes from al-Qaida's leadership this week have raised concerns about possible new terrorist attacks. But recent events in
2007年VOA标准英语（七月）
vacant a.空的；未被占用的 vain a.徒劳的；自负的 valid a.有效的；正当的 vapour n.汽，蒸气 variable a.易变的 n.变量 variety n.多样化；种类；变种 various a.各种各样
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