I must go there earlier. John has suggested that I ________ an hour before the discussion begins.

A．go

B．shall go

C．will go

D．would go

氢氰酸是毒害品的一种，它的性状是（）。

A、无色液体

B、极易挥发

C、带苦杏仁气味

D、剧毒蒸汽