A lead in 5G by Chinese companies should spread their advantage into more lucrative, mature and strategically interesting market

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问题 A lead in 5G by Chinese companies should spread their advantage into more lucrative, mature and strategically interesting markets, in which the new networks could become a "vector of China’s influence".

选项 A、will be spreading
B、spreads
C、will have spread
D、could spread

答案D

解析 虚拟语气的用法。句子开始的A lead in 5G by Chinese companies是一个含蓄条件,所以句子中的谓语动词应该用虚拟语气。
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