【单选题】China is a great country with a long history, ______ we all know it.
【单选题】Do you know of all the words we used in 2011 'hold' became in China?
【单选题】In China, as we all know, brides are often dressed in red as it is a________of good fortune.
【单选题】As we all know, China is a developing country _______ to the third world.
【单选题】China is a country with the largest population in the world, we all know it.
【单选题】(As) we all know Taiwan is (to) the east of Hongkong and (on) the (southeast) of China.
【单选题】当不知道数据所带标签时,可以使用哪种技术促使带同类标签的数据与带其他标签的数 据相分离?( )