单项选择题

The main role of some dinosaurs' developed primitive feathers is to_____.

A．fly
B．fight
C．keep warm
D．frighten the enemy
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单项选择题
At last the Queen decided to_____.
A．hold a more splendid royal ball
B．admit the staff to use of the mobile phones when they are on duty
C．follow the ban of mobile phones at royal dinners
D．get rid of the old budgie
单项选择题
Which place was not attacked in Saturday
A．Police headquarter
B．Hospital
C．Gas station
D．Power station
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