In the past several years, the representatives of the two countries have met frequently to discuss ______ issues.

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问题 In the past several years, the representatives of the two countries have met frequently to discuss ______ issues.

选项 A、a cluster of
B、a host of
C、a flock of
D、a bunch of

答案B

解析 表示某种集合概念的单位词往往有固定的搭配。a host of的意思是“许多”,和issues搭配则表示“许多问题”。a cluster of 和 a bunch of都可以与flowers搭配,表示“一束花”。此外,它们各自还有其他的一些搭配用法,如 a bunch of keys表示“一串钥匙”。a flock of常用于表示“一群鸟或羊”。A、C和D都不能与issues搭配使用。
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