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————网络使用相同的基础设施传输语音，数据和视频信号。

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1. The company (be) ______ in the land market since 1990 and it is now taking the lead in this field.

2. If you give us any opportunity to deal in your products, the result will be (entire) ______ satisfactory.

3. It is reported that the construction of the new subway (complete) ______ next month.

4. The manager stressed the (important) ______ of developing a long-term strategy for the company.