无机砷化学物

That arn computer well is important.

本讲为2006年下半年新的教学内容，请对照讲义听声音！ Students(researcher/scholar) of Nature are not satisfied with guessing, but they observe, day after day, the changes which tak

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自考英语（一）78讲

Biosolids

By Mario Ritter Broadcast: October 28, 2003 This is Steve Ember with the VOA Special English Agriculture Report. Farmers have long put animal waste on their fields. They may also use human waste. Mode

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VOA2003（下）-农业与经济

CNN 2010-10-09

This town here has sort of been going through clean-up. People are trying to salvage things from their houses, but the reality is when you talk to them, there's nothing they can salvage when has been touched by this red toxic chemical mix. People sho

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CNN2010年(十)月

VOA标准英语2012--Tests Show Levels of Arsenic in US Rice

Tests Show Levels of Arsenic in US Rice Two hundred different types of rice and rice products tested by both the non-profit research group, Consumer Reports, and the U.S. Food and Drug Administration [FDA], contained varying levels of different forms

发表于:2019-01-13 / 阅读(55) / 评论(0)

VOA标准英语2012年(九月)

VOA标准英语2011--Black, Foamy Water Worries Fracking Neighbors

Black, Foamy Water Worries Fracking Neighbors There is a lot of construction near Janet McIntyre's home in southwestern Pennsylvania. It's not new houses, but new industry: 10 gas wells, a compressor station and multiple drilling-waste ponds. The sta

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VOA标准英语2011年(十二月)

李克强总理鼓励科技创新

Premier Li Keqiang says China should consider science and technology as a primary productive force. Scientific and technological innovation to a large extent determines the future of China's development strategy. In history, we have missed several te

发表于:2019-01-20 / 阅读(48) / 评论(0)

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学英语单词

a-de

adaptive narrow-band filter

adjustable air condenser

automatic-sequence-controlled starting

barrier breaker

be hooked on