单词:tetrakaidecagons
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Tag questions are used when seeking confirmation of what one believes to be true. They restate, in question form, the previously spoken sentence. For example, He is an engineer. Isn't he? (Positive statement, negative tag) They're not from Colorado.
This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang
T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗
HONG KONG, Aug. 22 (Xinhua) -- Hong Kong fishing vessel Kai Fung No. 2 reached Hong Kong water on Tuesday evening. A spokesperson for the Hong Kong Special Administrative Region (HKSAR) government said Chief Executive CY Leung and HKSAR government ar
10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur
BEIJING, Aug. 14 (Xinhua) -- Kai-Tak, the 13th tropical storm of the year, is approaching China's southern regions, the country's meteorological authority forecast Tuesday. Kai-Tak, moving northwest at a speed of 15 to 20 km per hour, will graze or l