单项选择题

北京2022冬奥会和冬残奥会医疗保障国际高峰论坛上，谁介绍了国际奥委会医学委员会主要工作？

A.国际奥委会医疗委员会副主席

B.国际奥委会医疗委员会主席

C.中国奥委会主席

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单项选择题

北京冬奥会建设中，海拔最高的超级工程是建设哪一场馆？

A.滑雪大跳台中心

B.国家雪车雪橇中心

C.国家高山滑雪中心

多项选择题

Taobao, Tmall and JD are the local niche players. Amazon dominates the global cross-border online shopping. It is evident that China has enjoyed one of the fastest rising trends in demand for international brand. Chinese middle class consumers are upward mobile and brand- and quality conscious. Amazon is not very optimistic about prospects in Chinese market. Chang, vice president of Amazon, is too much frightened by local e-commerce giants. Amazon’s advantage is its global network that can help Chinese buyers. China’s Belt and Road Initiative has put new energy into cross-border e-commerce. Amazon’s global logistics network has helped to establish an effective “Online Silk Road’ for Chinese enterprises going global,” Amazon Prime offers limited free cross-border shipping membership program.

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