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    【题目】—The 5G technology in China can help doctors treat patients who are hundreds of kilometers away.

    —It is really .

    A.efficientB.culturalC.cruel

    【答案】A

    【解析】

    句意：——中国的5G技术可以帮助医生治疗远在几百公里外的病人。——真的很有效率。

    考查形容词辨析。efficient有效率的；cultural文化的； cruel残酷的；根据上文“can help doctors treat patients who are hundreds of kilometers away. ”—— 可以治疗几百公里外的病人，说明是很有效率的；故选A。

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