单项选择题

Questions 19 to 22 are based on the conversation you have just heard.

A．Thank you. I will help to call the doctor.
B．Thank you. Enjoy your stay.
C．Thank you. But I am afraid I should emphasize again.
D．Thank you. You are very smart.
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单项选择题
According to the passage, the US President must ______.
A．be engaged in everything from nuclear warheads to the outcome of all football matches
B．be a person of outstanding ability who meets many qualifications stated in the Constitution
C．be careful not to make mistakes when he is answering reporters’ questions on his policies
D．be a middle-aged native American with long enough residence in the country
填空题
extends
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