单项选择题

Third-country calling refers to ______.

A. calling via another country
B. finding a person in the third country to call
C. calling through three countries

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单项选择题
If you want to ring back, you have to ______.

A. redial the telephone
B. know the free telephone number to a computerized switch in another country
C. find another person to call you back
单项选择题
The Price of international calls into America is ______.

A. higher than that of the calls out of America
B. far lower than that of the calls out of America
C. is the same as that of the calls out of America as it is decided by the cartel
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