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单选题 The improvement to the present system is in the charge of

A．CTIA
B．the Warning Alert and Response Network
C．FCC
D．federal regulators

参考答案C
解析: 细节理解题。由第三段最后一句话“ne act tasked the Federal Communications Commission(FCC)with coming up with new ways to alert the public about emergencies．"可知FCC负责找到新的方法来提醒人们注意警报。
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A．the US federal government
B．mobile phone users
C．the carriers themselves
D．the law of the United States

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单选题 Which of the following is true of cell phone users?

A．They must accept the alert service.
B．They may enjoy the alert service for free.
C．They must send the alerts to others.
D．They may choose the types of messages.

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单选题 An alert message will NOT be sent if

A．a child loses his way
B．a university shooting happens
C．a natural disaster happens
D．a terrorist attack occurs

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