单项选择题

What’s the time when bowel radioactivity can be seen in biliary atresia? （） A. within 60 minutes B. within 4hours C. within 24hours D. no excretion at all

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19世纪末20世纪初的英国伦敦Daniel Jones教授对RP音标体系的研究做出了重大贡献。
正确
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答案：正确

单项选择题

Edna O’Brien’s pioneering style and frank portrayal of women made her always welcome in her hometown of Ireland. ( ) A. 对 B. 错