单项选择题


Passage One
Questions 26 to 28 are based on the passage you have just heard.

A．Catching runaway criminals.
B．Patrolling the dangerous town.
C．Scratching the hidden bombs.
D．Drag-sniffing or bomb-sniffing.
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填空题
It is a surprise that up to 43 teams came for this year’s race called the Grand Challenge.
单项选择题
A．11-week course for control duty.B．9-week course for control duty.C．11-week course for patrol duty.D．9-week course for patrol duty.
A．11-week course for control duty.
B．9-week course for control duty.
C．11-week course for patrol duty.
D．9-week course for patrol duty.
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