3级

单选题Convergence of satellite and terrestrial telephony is certain to deepen as the technical hurdles of multi-standard handset development and infrastructure integration fall．

参考答案：B进入在线模考

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1A commentary on current business trends and activities is put forward; past performance of past activities is studied to focus on the future．

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2Such legal entities provide the means for international cooperation and support of macroprojects related to the moon and mars that encourage global private sector  participation．

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