【单选题】The expression 'under fire' in the first paragraph means ________.
A.
in an urgent situation
【简答题】如图,AB、CD相交于点O,OB平分∠DOE,若∠DOE=60°,则∠AOC的度数是( )度.
【简答题】DOE实验的策略有___、___、___。
【单选题】在豆乳饮料加工过程中,下列措施中( )没有消除豆腥味的作用。
【单选题】The phone call is between __________. A. Tang Hua and Sara B. Tang Hua and John C. Sara and John