参考答案：nationalities

解析：[听力原文]1-10 The Commission is expected to propose allowing people to choose which legal jurisdiction they would come under, based on their nationalities or their residency. But the proposal is set to run into difficulties because of the very different laws on divorce that apply across the EU. The Commission wants to clear up problems over which law to apply when, for example, a married couple from one member state is resident in another member state or when the couple is of different EU nationalities. The majority of member states are said to be in favor of the idea and responded positively to a consultation which followed the publication of a Commission Green Paper. With 15 percent of German divorces each year involving couples of different nationalities, the government of Berlin is particularly keen to see resolved the issue of which laws should apply. But some member states are expected to resist the proposal which would involve allowing different divorce laws to be applied in their countries. For example, in Ireland where the divorce law states a couple must have been separated for four years, establish that their marriage has broken down and be offered mediation, a couple from Sweden could apply to an Irish court to allow them to divorce under Swedish law, where divorce can be obtained quickly. The Irish government’s submission to the Commission on the Green Paper stated, "Ireland is not in favor of allowing spouses to choose the applicable law, as this could be open to abuse.., such abuse would be likely to impact most on divorce regimes, such as that of Ireland, which require a relatively long separation period." Ireland, like the UK, however, is allowed to choose whether to "opt-in" to such a proposal under rules agreed in the Amsterdam treaty. Malta has no such safeguard but could veto the proposal in the Council of Ministers since unanimous approval will be required. "It is going to lead to a two-tier situation," said Geoffrey Shannon, Irish expert on the Commission on European Family Law, which examines the harmonization of EU family law. The proposal would also mean that judges would have to be trained in the divorce law of all 25 member states.[解题技巧] 完形填空是对应试者听的能力、拼写能力、记笔记能力和书面表达能力的综合测试。它要求应试者不仅听懂内容，熟练而准确地拼写单词，更重要的是将一些短语、句子结构正确理解并表达出来，是对英语综合运用能力的考查。 在答题时注意： 1．预览文章，找出线索。文章的话题规定了用词范围；利用词汇的同现和复现关系；根据上下文推测词汇的运用。 2．听写结合，双管齐下。听音贯穿着期待、预知、分析、综合、推理和判断等一系列过程。听的同时应快速记下关键词；而在记笔记时，又要能有效、专注地去听，获取全文信息。 3．提高记笔记的效率。首先，使用缩略语；字母较少的单词，可完整写出该词；字母较多的单词只写该词的几个字母。其次，有选择地记笔记，应重点记下句中的中心词和实词。

[分析]： 名词。 本题要求补全名词作base on短语中介词on的宾语。这里注意所填名词的复数形式。