单项选择题

According to the speaker, what kind of problems do phrase books have

A．They are actually useless.
B．They have a practical problem.
C．They should be designed in more phrases.
D．They don’’t provide enough useful phrases.
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If you want to watch the program of China Music, which channel do you turn to
单项选择题
Why was Kohoutek referred to as the comet of the century （）

A．It was thought to be extremely old.
B．It passes the Earth once a century.
C．Scientists predicted it would be very bright.
D．Scientists have been tracking it for a century.
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