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  3. Europe’s biggest countries were once among the biggest anywhere. In 1950, four of the world’s ten most 【C1】______ states were in

Europe’s biggest countries were once among the biggest anywhere. In 1950, four of the world’s ten most 【C1】______ states were in

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问题     Europe’s biggest countries were once among the biggest anywhere. In 1950, four of the world’s ten most 【C1】______ states were in western Europe. But decades of falling birth rates have 【C2】______ slow population growth in Europe. By 2017, Europe’s most populous country【C3】______ just 16th globally. The continent’s birth rate is now so low that the total population in many European countries has begun to 【C4】______.
    One solution is to attract foreigners. Eurostat said that the region’s population rose in 2016【C5】______ immigration. The number of births and deaths were equal at 5.1m, while net migration 【C6】______ the population to 511.8m. In 13 【C7】______ its 28 member countries, more people died than were born last year. 【C8】______ not all saw their populations fall. A large intake of migrants to Germany meant that populations there still 【C9】______ grow.
    By 2050, Eurostat estimates that only Ireland, France, Norway and Britain would see their populations rise 【C10】______ migration. 【C11】______ , Germany and Italy need migrants badly. 【C12】______migration does continue, Eurostat’s central forecast 【C13】______ that Germany will still only maintain its current population.
    Even 【C14】______ migration at current levels is unlikely to prevent most eastern and Mediterranean countries 【C15】______ shrinking. The former group has been losing people 【C16】______ the break-up of the Soviet Union. 【C17】______ those countries joined the EU, large shares of their populations emigrated to richer EU member countries to work. For those who leave, the freedom to live and work is an immense boon. But the countries 【C18】______ they were raised face a hard task. They must attract and 【C19】______ new workers, increase their birth rates, or learn to 【C20】______ a declining population.
【C16】
选项 A、now that
B、ever since
C、even though
D、as if
答案B
解析 逻辑关系题。根据上文并分析本句的句子结构 The former group has been losing people为现在完成进行时，意为“东欧各国人口一直在外流。”因此本题应选B项ever since “自从……”，其他选项A项now that“既然”，C项even though“虽然、即使”，D项as if“好像”均不符合语境。
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