单选题 MUN, which ( ) Model Untions is a conference that provides students all ever the world with the opportunity to experience what it’s like to be the United Nations.
【正确答案】 B
【答案解析】考查词汇辨析。A项：支持；B项：代表；C项：起立；D项：突出、坚持。题目中的意思是指“MUN代表的就是Model Unions......”，故选项B正确。