试题要求：
Mom believed that sisters should be the best friends to each other.
试题解析：
答案：A
解析：
由第七段可知，妈妈认为Helen应和她的姐姐们彼此成为好朋友。题干的表述与文章一致，故选A。
考点：阅读判断,2015.4
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