Chinese netizens （网民） doubt ______they called Western freedom of speech , seeing the dishonest reports about the recent riots（暴乱） in Tibet by some Western media．

A．that

B．which

C．what

D．Whether

未接线的喇叭嘴没有分别用（）依次装入、未压紧者为失爆。

A、档板、密封圈、金属圈

B、密封圈、档板、金属圈

C、密封圈、金属圈、档板