Fiber-optic cables can carry hundreds of telephone conversations ______.

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问题 Fiber-optic cables can carry hundreds of telephone conversations ______.

选项 A、simultaneously
B、spontaneously
C、homogeneously
D、contemporarily

答案A

解析 simultaneously同时(发生)地；spontaneously自发地，自动地；homogeneously同类地，同性质地； contemporarily同时代地，同时期地。句意：光纤电缆可以同时输送上千个电话的谈话。

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