单项选择题

As was estimated in 1997, .total telephone sets now in use in the United Stated numbered 170 millions. With so many sets______ into a system, efficiency is a major concern.

A．compiled
B．knitted
C．integrated
D．elapsed
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单项选择题
The beaches are a______ for walking, especially in the early evening.
A．lure
B．incur
C．inflate
D．inhabit
单项选择题
The Queen had______ over the biggest fundamental change in Britain's word role in a couple of hundred years.
A．presume
B．preside
C．prey
D．probe
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