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  3. South Korea’s largest mobile phone operator is to offer users a new service that

South Korea’s largest mobile phone operator is to offer users a new service that

游客2024-08-11  11
问题 South Korea’s largest mobile phone operator is to offer users a new service that it says will repel mosquitoes and subscribers can download a sound wave that is______to human ears but annoys mosquitoes within a range of about a metre.
选项 A、audibility
B、inaudibility
C、audible
D、inaudible
答案 D
解析 句意：韩国最大的手机经营商即将向消费者提供一项新的服务——驱除蚊子，订阅者可以下载一种声波，这种声波人类听不到但是可以驱逐附近一米范围内的蚊子。inaudible是形容词，意为“听不见的"，符合句意。因此D选项正确。
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