【正确答案】 C

【答案解析】[听力原文] Twins born joined at the head have gone home to Guatemala five months after they were separated by medical experts in the US. Doctors are optimistic that the baby girls will now lead normal lives. The 17-month-old twin girls finally went home to a new life in Guatemala after spending the last five months in a Los Angeles hospital. The twins Maria Teresa Quiej Alvarez and Maria de Jesus had been born joined at the head. Their problem captured the attention of a children's charity, which organized their trip to the US. The twin's 21-year-old father, a banana packer, expressed his heartfelt thanks to the doctors and staff who had donated their services to perform the complex 23-hour operation. Charities and public donations took care of the two million US dollar bill. Staff who looked after the twins during their stay were sad to see them leave. How old are the twin girls? 新闻中提到17个月大的双胞胎姐妹终于回到危地马拉过上新生活，由此可知C项正确。 A项是这对双胞胎孩子父亲的年龄，D项则是她们在医院停留的大概时间。

【正确答案】 B

【答案解析】[听力原文] What is the problem of the twins? 新闻一开始就说有对双胞胎头部连在一起(Twins born joined at the head)，之后又再次提到双胞胎自出生起头就连在一块(born joined at the head)，所以她们是头部相连的连体婴儿，应选B项。 A项“她们被美国医生分开”是为了让她们过上正常生活而采取的手术，不是双胞胎的问题，排除A项。C项“她们的父亲太年轻而养不起她们”没有原文依据。D项“她们悲伤地离开了工作人员”和新闻内容相反，原文说的是她们出院时工作人员都很忧伤，舍不得她们离开。