— Mr. Smith never means what he says．I dislike him．

— ______________, as the saying goes．

A．A single flower does not make a spring

B．A still tongue makes a wise head

C．A man of words and not of deeds is like a garden full of weeds

D．Actions speak louder than words．

在先申请的主题要求过外国优先权，其在后申请能够要求本国优先权。