单项选择题
A．in particular B．as a result C．however D．therefore
61（）A．orderedB．criticizedC．challengedD．urged
单项选择题61（）
A．ordered B．criticized C．challenged D．urged
Global satellite communications systems will be useful ...
单项选择题Global satellite communications systems will be useful to（）
A．laptop computer users B．remote villages C．disaster-relief teams D．all above
Which of the following may be the best title for the pa...
单项选择题Which of the following may be the best title for the passage（）
A．Global Satellite Communications. B．New Voice and Messaging Systems. C．New Generation Satellite. D．Always in Touc
