Scientists Create Method to Test Food and Drugs for Purity Millions of people in developing countries have to be on guard against contaminated food and medicine. Some products could be harmful -- even deadly. In Nigeria, brake fluid was found in a pr

发表于:2018-12-07 / 阅读(41) / 评论(0) 分类 2017年VOA慢速英语(三)月

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发表于:2018-12-10 / 阅读(53) / 评论(0) 分类 牛津阅读树ORTMP3(1-11级)

New England weather There is a sumptuous variety about the New England weather that compels the strangers admirationand regret. The weather is always doing something there; always attending strictly to business; always getting up new designs and try

发表于:2018-12-31 / 阅读(116) / 评论(0) 分类 英语名著名段背诵精华

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发表于:2018-12-31 / 阅读(56) / 评论(0) 分类 王培廷分级书单三 James Marshall - Fox系

One not so sudden problem that Chinese media have been reporting a serious shortage of water. Some worry that it could derail the country's rapid economic growth. China's per capita water resources are only a quarter of the world average and the prob

发表于:2019-01-08 / 阅读(188) / 评论(0) 分类 2006年NPR美国国家公共电台

to throw a wet blanket on something to throw a monkey wrench 中国人经常会用

发表于:2019-02-04 / 阅读(119) / 评论(0) 分类 美国习惯用语