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New Non-invasive Colon Cancer Test Claims 94% Accuracy 新型检测非侵入性结肠癌准确度达94% According to the World Cancer Research Fund and the American Institute for Cancer Research, colorectal cancer is the third most common cancer worl
VOA标准英语2014年(九月)
STACEY VANEK SMITH, HOST: Marijuana is now legal in almost 30 states. But even in those states, it is still illegal to drive while impaired by the drug. But as NPR's Rae Ellen Bichell reports, that's left law enforcement and scientists struggling to
2018年NPR美国国家公共电台1月
Tip(诀窍)，resistance F: take up(获得) any sales tips? M: sure, give you 10% off and let you loose (放任自由)in my store F: I admit it. My sales resistance（对推销的抵制力） is low. M: your sales resistence is not existent. F: Im a pushover（容易被
VOA 商务英语
[00:02.99]3 Listen and order. [00:07.30]You will hear Miss Wang give instructions on [00:10.67]how to use a Bunsen burner. [00:14.04]Listen to the instructions [00:15.94]and number the pictures in the correct order. [00:20.12]Number the steps 1-8. [0
外研社新标准初中英语九年级
In an Aesop fable, a thirsty crow wanting to drink from a pitcher must first raise the water level. So he drops pebbles in the container. In real life, the European Jay can perform the same task. But just how smart is it? Researchers challenged jays
Scientific American(八)月
Wk 30 (25 July 1978) World's First Test Tube-Baby Is BornThis Week in HistoryLouise Brown, the world's first test tube baby, is born in Manchester, England. In 1978, the world's first test tube baby, Louise Brown, was born in Oldham and District Gene
英语新闻与报道—News and Reports