The only sour note has been struck by new energy tax proposals in the US and the EC. （）

单项选择题The news slowly passed through to everyone in the office. （）

A.filtered
B.riveted
C.formed
D.delved

单项选择题The Government Printing Office provides free public access to full-text federal documents. （）

A.excess
B.exit
C.extra
D.entry