Since then the population of London________by almost 50,000 a year—an increase l
题型：不详难度：来源：
Since then the population of London________by almost 50,000 a year—an increase largely fuelled by immigration.| A．has risen | B．have risen | | C．rises | D．rise |
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答案
| A |
解析
| 考查时态和主谓一致。population(集合名词)应看成一个整体，谓语动词用单数形式；句首的Since then表明谓语动词应用现在完成时态。自那时起，伦敦的人口每年几乎增长50 000人，主要是由于移民的涌入。 |
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