D,Sixteen-year-old Maria was waiting in line at the airport in Santo Domingo.She was leaving her native country to join her sister in the United States. 从这两句看出 Maria 还在Santo Domingo，没在USA，所以选D
C,she suddenly heard the airline employee asking her to pick up her luggage and put it on the scales （称），从这句看出“airline employee”是要“check people’s luggage”，而不单单是“pick up the luggage”，所以选C
C,这题简单的，upset对应unhappy
D,“Everyone was looking at him with disapproval”翻译过来就是每个人都不满的看着他，对应的就是“felt sorry for the man’s manners （对这个男子的态度感到不满）”，考点在于你是否认识disapproval和manners这两个单词
A，she was young but behaved properly她虽然年轻，但表现的乖巧懂事。其他选项和文章意思不符
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