根据以下材料，回答
Derek Sandha, who came from France, wasdressed in formal suit on Thursday morning in a hall. It was so quiet that youcould hear yourself breathe. He held a glass of baijiu in his hand, and studiedit as if it were a piece of art. Then he closed his eyes, inhaled the aroma andfinally tasted it with apparent satisfaction.
"It′s amazing," he said.
Sandha was one of the panelists judging theChinese alcoholic classic at the Concours Mondial de Bruxelles Guiyang 2015Spirits Selection in Guizhou province.
The event, which kicked off on Wednesday ina region famous for its baijiu brands, has attracted global attention, with1,397 spirits from 43 countries seeking recognition at one of the world′ s mostauthoritative spirit competitions.
It was the first time that baijiuofficially became a category of spirits to be tasted. The event was organizedby Concours Mondial de Bruxelles, established in 1994 and dubbed the"United Nations of fine wines".
"It was really hard to swallow when Idrank Chinese baijiu for the first time, because the flavor is so differentfrom Western spirits. Since I′ve learned about the culture and got used to it,I like to drink Chinese baijiu", Sandha said.
He suggested makers lower its level ofalcohol, or that people mix it with other drinks to make cocktails, for easieracceptance by Westerners.
Xie Yongwen, general engineer for Daohuaxiang, a brewer based in Hubei province, said baijiu can get to foreigners′tables with much help from the government. He said since many Chinese citieshave built friendly relationships with cities overseas, spirits from the twosides could be part of an exchange of culture, thereby promoting baijiu to theworld.
Which of the following can replace theunderlined words in the fourth paragraph?
词汇题。根据画线词后的Wednesday结合第一段的Thursday morning的评酒活动，可知星期三评酒大会刚开始，kickedoff“开始”，故选A。
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MP3（ ）。
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微观经济学要解决的问题是（ ）
机关文书部门或业务部门在年终或第二年上半年对归卷的文件材料进行整理等工作，称为（ ）。
20世纪70年代中国外交有了重大突破和转机，转变的关键是（ ）
